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SRM Workshop Services and special

products guide 2013

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NB This is a temporary services and special products guide,

we are currently working on a new one for 2014 , if you have

any queries or requirements please send us an email.

Who are we?SRM Engineering has been in the business of classic bike design, renovaon and innovaon

since 1980. SRM is a team of dedicated motorcycle enthusiasts commited to the connual

improvement of the classic bikes we all love and cherish. We consider ourselves to be an

on-going R&D department, not just keeping the bikes running beaufully but constantly

inovang to realize the full potenal of the bikes as if they had been connually developed

from the factory!

Producon Facilies Research + developmentSRM design and CNC manufacture an exclusive range of

improved parts for classic Norton BSA and Triumph

motorcycles. Our in-house design and development team

uses the industry standard for both design and CNC manufacture

to enable us to design, fabricate and prototype all under one roof.

Our design and manufacture is a process of connual assesment and

tesng of our prototypes from inial producon samples to nal producon parts.

Our aim is to supply products and design innovaon that take the anxiety out of classic bike

ownership.

SRM connue to oer proven quality for engine rebuilds, electrical refurb, wheel building,

suspension and braking improvement, paintwork, performance upgrades and race

preparaon

SRM parts are available worldwide directly from our online web-shop and also by phone or

wrien order. We also distribute our products through trusted importers/distributors;

JRC Engineering www.jrceng.com 951-940-5411

Brish Cycle Supply Co. www.britcycle.com (201) 880-0366

Brish Cycle Supply Co. www.britcycle.com (902) 542-7478

Brish Spares NZ www.brishspares.com 64-4-939-8819

page2

www.srmclassicbikes.com

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Engine andGearbox services

Wheel services

Electrical services

Special products and services Page 33

Page 20

Page 15

Page 4

Blue-Book Restoraons

Page 39Rolling Road Diagnoscs

Page 40

INDEX

Engine Tuning/Race prep

Page 41

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Engine & Gearbox Re-condioning serviceWe re-condion on average 250+ engines per year, SRM believe the only standard for engine

rebuild is as good as new, with the additon of many of our exclusive parts, we are condent we

will return your engine in a beer than new state.

We can give a strip down and autopsy before we commence work on your engine, it is inspected

for wear, damage, problems and assessment.

An esmate is then compiled lisng all new parts, engineering work and repairs required include

a list of opons such as exterior cosmecs and other useful modicaons, opons such as dy-

namic balancing, lead free conversion, tuning opons etc etc. This allows you to tailor the work

to your requirements.

Please note that on an esmate is exactly that, we cannot foresee all problems and further ad-

dional work can only become apparent on the nal assembly of the engine.

SRMAUTOPSY Strip inspect and esmate cost of repairs to full engine ....... 163.50

Needle roller bearing & oil feed conversionSRM have pioneered and developed this conversion for both the A10 and

A65. BSA were aware of the shortcomings of the cranksha bush and

were beginning to develop their own crank oil feed conversions mainly for

use with their racing engines.

Our needle roller and oil end feed conversion completely eliminates the

troublesome ming side bush. This is replaced by a combined ball and

needle roller bearing which withstands substanal radial and axial load,

the combined bearing eliminates end oat, it locks the cranksha to the

ming side so no more shimming!

The oil ways are altered and re-routed so the oil is fed directly from the oil

pump to the big ends (via an oil seal housed in the ming casings) and through an end feed quill

situated in the end of the cranksha. Oil pressure and delivery to the big ends is uprated by at

least 40 %.

Early Triumph 3TA 5TA`s etc using a similar bush can be converted in this way also, to give long

reliable mileage.

To carry out the conversion we need the following components:-

1) Cranksha2) Both crank case halves

3) Inner and outer ming covers

4) Oil pump

5) Idler pinion gear

6) Crank sha pinion gear

7) Oil pressure release valve

8) Le Hand Crank Lock nut (A7/A10)

SRMNR1Needle Roller Bearing Conversion 1968 on .........................441.22

SRMNR2Needle Roller Bearing Conversion 1962-67 ........................ 441.22

SRMNR3Needle Roller Bearing Conversion A7 A10 ...........................441.22

SRMNR4Needle Roller Bearing Conversion 3TA 5TA ........................ .409.82SRMNR5Needle Roller Bearing Conversion Ariel Huntsmaster...........441.82

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Cranksha main bush BSA & Triumph twinsAlthough the needle roller conversion and oil end feed conversion is an advantage and superior

to the standard main bush. If you wish to retain the main bush it is esenal that the main bush is

ed and machined to its correct tolerances. Firstly the sludge trap is cleaned out and then the

cranksha main journal re ground. The crank is then cleaned once more prior to re assembling thesludge trap.

The crankcase bush housing is checked for correct tolerance and ovality. A main bush with an un-

dersize internal diameter is ed to the casing. The bush is bored perfectly in line and to an exact

tolerance to suit the cranksha journal. The bush is then ashed honed to give a correct oil retain-

ing surface. The cranksha can then be shimmed to its correct end oat in the crankcases, it is now

ready for assembly. If the ming side bearing housing is oversized or damaged it needs to be jig

bored to an (over) size and an appropriate bush ed (A7, A10) only.

High Quality SRM bushes are also sold separately

SRMRG2 Crank Regrind main journal........................... ....31.49

SRMCS6 Sludge Trap cleaned re assembled......................35.79SRMCC13 Fit main bush and jig bore to size .....................48.17

SRMCC18 Jig bore housing....(bush housing A7/A10)........53.91

SRMCS9 Shim Crank to cases............................................42.94

67.0790 A10 Solid one piece bronze bush.......41.08

68.0015 A65 Early bush (Exchange Only)......41.08

68.0657 A65 Late bush ......( 1966 on).............41.08

68.0633/5 Shim Set.............................................7.2768.0685 A65 Crank bush thrust washer............11.96

All our crankshas are reground accurately to the correct specicaon radii, sizes vary with each

individual crank. The main journals are generally ground to the necessary undersize, they are then

highly polished to the correct surface nish.

SRM CrankRgrind big end each ...............................................25.24

SRMRG2 Crank Regrind main journal ............................................31.49SRMCS1 Cranksha sleeved and ground on shas........................86.00

SRMCS10 Cranksha lightened ......................................................85.87

SRMCS11 Cranksha crack tested ...................................................51.61

SRMCS12 Remove and ret ywheel ...............................................35.75

SRMCS16 Polish to clean big end journal ........................................12.89

SRMCS17 Renew crank end feed quill .............................................45.43

SRMCS18 Strip and reassemble Norton bolt together crank ..........42.94

SRMCS19 Grind end quill to clean damage ...............(Triumph).......31.20

SRMCS2 Cranksha Spline repaired .........(BSA).............................97.47

SRMCS3 Cranksha threads welded recut thread .........................97.47

SRMCS4 Rotor Keyway welded, ground and recut ...........................71.56

SRMCS6 Sludge Trap cleaned re assembled ......................................35.79

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Crankshas

SRMCS9 Cranksha shimmed to cases ............................................42.94

SRMCS1 Sleeve Ball/Roller bearing journal grind to size .................86.00SRMCS20 Fit Con Rods to Crank........................................................36.40

67.1220 (early) Sludge Tube.........................................................9.75

70.3903 (late) Sludge tube..........................................................9.88

68.0580/1 Flywheel Bolts (set of 3)............................................17.71

SRMCS7 Dynamic balance crank (twin).....................107.79

SRMCS7B Dynamic balance triple crank ..................... 126.14

At SRM we recommend our customers have their cranksha balanced as part of their engine re-

builds. We pride ourselves in ensuring that each cranksha leaving our factory has been carefully

dynamically balanced, using our Borgo EDC 50, which ensures vibraon has been drascally reduced.

Vibraon reducon is of a parcular benet to BSA,Triumph and Norton twin cylinder models.

Dynamic balancing of the cranksha is where

the weight of the Pistons, conrods and shells isbalanced against the counterbalance weights

and the ywheel of the cranksha. The crank-

sha is spun on the Borgo EDC50 which mea-

sures not only the circumferenal balance

but also the balance across the sha (rocking

couple). Its this method of balancing which

produces the smoothest ride.

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To run your classic four stroke engine on lead free petrol only the exhaust valve seats have to

be replaced. This is due to the intense heat produced around the exhaust valve seat area. We

replace the seats with a special hardened steel insert. We can supply compable valves for the

replacement seats. We can t the Valve seats to any cast iron and aluminium cylinder head.

SRM stock a large range of valves for BSA Twins and Triumph 650 and 750cc Twins.

We also strongly recommended the use our Colsibro material valve guides composed of Copper,

Nickel, Silicone alloy which resists wear, corrosion, spark erosion, has a high tensile strength and

can cope with rapid temperature changes, the closer tolerance enabled by using this material al-

lows for a cleaner running engine.

Cylinder head workThe Serdi 3.0 is one of the most accurate cylinder head machining centre available in the World

today. It was designed and produced to enable the highest accuracy machining jobs on mul

valve cylinder heads The seats are cut so accurately that if new valves are ed, lapping in is notrequired. All heads are vacuum tested in situ. The valve seats can be cut to any angle required

plus the correct relief radius to allow a more ecient ow of gas past the valve seat opening

and valve head, which means a more ecient engine.

SRMCH2A Lead free valve seat single cylinder labour...................................

72.24

SRMCH2B Lead free valve seat Twin cylinder labour ...................................

98.62

SRMCH2C Lead free valve seat Three cylinder labour...................................129.58

SRMCH2D Lead free valve seat Four cylinder labour....................................

159.38

SRMCH2F Lead free conversion BMW, Guzzi Twins (pair heads) labour 122.69

VALVE-SEAT Bare valve seat each ...........................................................................

.8.84

SRMCH3A Gas ow A65 twin 32mm ..................................................153.94

SRMCH3B Gas ow A65 34mm ..................................................... .184.74

SRMCH3C Gas ow A10 30mm .................................................... 153.94

SRMCH3D Gas ow Triumph twin .....................................................115.46

SRMCH12A Head assembled & checked single cylinder ....................30.82

SRMCH12B Head assembled & checked Twin cylinder ......................40.09

SRMCH12C Head assembled & checked Three cylinder .................... 64.40

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SRMCH12D Head assembled & checked Four cylinder ..................... 92.37

SRMCH1 Valve seat re-cut mul angle ........................................... 9.18

SRMCH5 Worn valve guide hole welded and re-machined ................77.01

Cylinder head work cont...SRMCH7 Old guide removed new ed and honed each ................. 10.02

SRMCH8 Valve guide machined for oil seal LABOUR ..........................7.79

SRMCH17 Spark plug thread insert solid top hat type .......................27.79

SRMCH17A Spark plug BIG insert for very worn/damaged holes .........30.82

SRMCH6 Rocker arms lightened and polished set of 4 ..................... 156.00

SRMCH23 Bead blast and clean Triumph Rocker boxes pair ...............27.73

SRMCH24 Bead blast and clean A10 Rocker box ............................... 27.73

SRMCH25 Polish A10/A7 Tappet inspecon covers pair .................... 15.42

SRMCH26 Solid top hat thread repair rockerbox to head thread ........13.11

SRMCH27 Strip, clean & assemble Triumph rocker boxes pair ............19.28

SRMCH19 Bead blast and clean twin head .........................................51.61SRMCH19A Bead blast and clean single head ...................................... 40.14

SRMCH19B blast and clean triple head ................................................ 68.80

SRMCH2 Convert Triumph push in to push over ............................... 46.80

SRMCH20 Bead blast and polish A65 rocker box ................................. 32.11

SRMCH21 Triumph exhuast port thread repair inc stub ...................... 75.00

SRMCH22 Combuson chamber reproled .......................................... 46.19

SRMCH28 Machine out old seat,weld up, new seat ..............................77.01

SRMCH29 Reprole combuson chamber to standard ........................ 38.52

SRMCH9 Head bolt/stud hole drilled & spot faced ............................. 2.31

SRMCH13 Skim cylinder head face/rocker box face ............................ .40.04

SRMCH10 Cast iron head shot blasted and stove enameled................. 60.00

SRMCH11 Damaged/broken n repaired on head (from).................... 23.12

Cylinders

At SRM we have a Roler 2MB Series cylinder boring machine.

The machine has variable feed rates and is highly accurate, maximising

the performance of machine operaons. Increase spindle feed rates for

simple oversize bores. Decrease feed rates for sleeve cuts or counter

bores. The machine can bore with oponal cuer heads and special

carbide tools are available for counter boring and chamfer cung

All our cylinders are bored to within 0.002 (thou), then put onto our Delapena Honer and honed to an exact

size, within two tenths of a thou (0.0002) tolerance, using a 180 grade hone. The bores are then honed with a

320 grade cork stone to give a perfectly Plateau honed nish.

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SRMCL2A Re-bore with plateau hone nish single ................................ 35.79

SRMCL2B Re-bore with plateau hone nish Twin.................................. 60.11

SRMCL2C Re-bore with plateau hone nish Triple................................ .85.87SRMCL2D Re-bore with plateau hone nish Four................................ ..107.33

SRMCL1A Hone bore(only)per cylinder ................................................ 11.55

SRMCL3 Cam followers refaced set of four.......................................... 51.61

SRMCL4 Cylinder top face skimmed.................................................... 40.04

SRMCL5 Cylinders shot blasted and stove enamelled...........................65.00

SRMCL6 Damaged/broken n repaired per unit..................(from)....... 23.12

SRMCL7 Head bolt hole helicoiled to correct depth each..................... 11.10

SRMCL8 Bore, t liner, bore & hone to std, mill top.......................... ....115.44

SRMCL9 Blast and clean alloy cylinder single........................................ 50.00

SRMCL11 Machine cylinder cutaways to suit hi strength conrods..........34.41

A10 Liner (supply cylinder liner lipped type)................................................

46.80

A65 liner (supply cylinder liner) lipped type................................................

46.80

Cylinders cont..

Gearboxes

We specialise in Quality gearbox rebuilds for both UNIT and PRE-UNIT twins gearboxes.

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Timing Cases and CrankcasesSRMTC9 Triumph pre-unit T/Cover Bush-to-Seal conversion..........................38.52

SRMTC10 Polish ming covers pair (BSA Twin)...................................... ..51.61

SRMPR1 Poilsh primary cover ........................................................................ 44.72

SRMTC11A Magneto rev drive conversion to cover ..........................................53.91

SRMTC12 Polish Triumph ming cover ........................................................... 30.82

SRMTC3 Cam/idler gear lightened and drilled ............................................. 57.26

SRMTC4 BSA A10 Idler bushes removed ed & honed (excludes parts).....32.22

SRMTC4A BSA A65 Idler bushes removed ed & honed (excludes parts).... 30.82

SRMTC6 BSA Idler housing bored o/size bushes ed (excludes parts)......53.91

SRMTC7 BSA Oil pump re-condioned. (excludes parts)............................. 64.68SRMTC13 Test Oil Pump....................................................................................20.80

SRMGB1 Kickstart/gear change sha O Ringed .....................................17.21

SRMGB13 Polish outer gearbox cover ...................................................32.11

SRMGB14 Beadblast and clean inner gearbox cover............................. 25.24

SRMGB15 Blast & Clean Gearbox shell ................................................40.14

SRMGB17 Fit and hone sleeve gear bushes ..................................... 33.90

SRMGB18 Fit and hone gearchange bushes labour...................................16.38

SRMGB2 Lay sha ground 3 undersize bushes ed and honed ........121.58

SRMGB3 M/sha ground u/size sleeve gear bush ed & honed........78.08

SRMGB5 A10 A7 B31 B33 Gold Star Gbox build .....(labour)........ ....172.00

SRMGB6 A65 gear change sha spline repair .................................... 42.68

SRMGB7 Clutch arm pivot A10/Pre-unit Tri G/box cover bushed ..... .38.52

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Timing Cases and Crankcases cont...

SRMCC1 Drive-side bearing housing bronze insert...............................................100.91

SRMCC3 Bore housing oversise bush ed and bored.(excludes parts)............88.30

SRMCC4 Crank cases jigged and faced top and boom.......................................93.02SRMCC5 A10 primary side top hat thread insert...................................................14.75

SRMCC6 All casing screw holes cleaned and re-tapped per hour.........................48.17

SRMCC7 Stud and bolt removal prior to machining per hour...............................48.17

SRMCC9 BSA Camsha bushes ed and honed...(excludes parts)......................57.75

SRMCC9A Triumph cam bushes removed ed & honed..(excludes parts)..........57.75

SRMCC10 Camsha cleaned up on lobes...................................................................25.78

SRMCC11 Alloy welding....................................................(from)................................. 23.12

SRMCC12 Bead blast and clean crank case pair Unit engines ..............................74.54

SRMCC12A Bead blast and clean pre-unit cases........................................................63.07

SRMCC14 ConvertA65 cylinder base threads to 3/8...............................................30.82

SRMCC15 Machine crankcases to accept belt drive kit............................................53.91SRMCC16 Set up and bore crankcase mouth to take 750 cylinders.......................42.94

SRMCC17 Set up and jig bore bearing housing.........................................................53.91

SRMCC18 Fit main bush and jig bore to size, bush extra......................................48.17

The conrod is one of the most stressed components in the engine, its failure can totally ruin an

engine. With most original rods being over 40 years old, we at SRM would advise that new rods

are ed to each re-condioned engine.

If you wish to connue with your original rods, then we can oer the service of polishing the

rods, this helps reduce the stress factors forming in the rod, but does not guarantee their ser-vice life.

Of course new big end nuts and bolts must always be used.

Conrods

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SRMCR1 BSA A65 A10 S/end bushes ed & honed ........(excludes parts)..... 22.38

SRMCR1A BSA A7 S/end bushes ed and honed.................(excludes parts)..... 22.38

SRMCR1B Triumph S/end bushes ed and honed ..............(excludes parts)..... 22.38

SRMCR2 S/End housing bored oversize bush ed (each)(excludes parts)..... 44.72SRMCR4 Con-rods polished pair ............................................................................. 75.69

SRMCR5 S/Journal end cap modied to suit later nuts.......................(pair)..... 10.80

SRMCR6 Fit and hone small end bush ..................................................(each)..... 12.15

SRMCR7 Hone to size big end housing ............................................................... 17.19

SRMCS20 Fit rods to cranksha................................................................................36.40

FORK-BUILD Fork pair assemble and check labour ............ ..........................63.07

CUSH-DRIVE-MOD Front pulley, converted to cush drive ........ .....................147.42SRMOJ1 Helicoil thread insert ......................................................... ...... 11.00

ENGINE-OUT-IN Remove engine/ancillaries, ret and set up & run (approx)... 481.63

Primary and Engineering odd jobs

LABOUR-HOUR General workshop service, repairs, restoraons etc per hour ...............48.17

At SRM we rounely carry out a variety of engineering odd jobs to numerous to list in our catalogue.Please feel free to enquire if you have any engineering work that needs to be done. Big or small, our

engineering sta will be happy to advise.

Full Engine Re-Builds

SRMRB3 Full engine build A7 A10 .......................................... 487.32

SRMRB4 Full engine build A65 A50 ........................................ 659.30

SRMRB5 Full engine build Unit Triumph ................................ 659.30

SRMRB6 Full engine build Pre-unit Triumph ........................... 487.32

SRMRB7 Full engine build Norton Twin .................................. 487.32

SRMRB8 Full engine build B31 B33 etc ................................... 487.32

SRMRBRACE Full Race engine build inc all clearances set ..............974.62

SRMRB15 Full engine rebuild T150, T160 R3..............................884.00

Engine rebuild Labour charges

Part Engine builds

SRMRB1 Boom end re-build ................................................................. 172.00

SRMRB10 Gear box inspecon assembly and ed and shimmed .......... 114.66

SRMRB11 Clutch and all primary components assembled and ed ...... 114.66SRMRB11A Fit inner & outer ming covers, mag & dyno set mag .......... ...143.34

SRMRB12 Inner and outer ming cover assemblies etc ed .................. 86.00

SRMRB13 Barrels pistons and tappets checked and ed ........................ 74.54

SRMRB14 Head & pushrod rocker asemblies assembled and ed ..........126.14

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Geng your Engine to SRM

We can arrange collecon and delivery from and to your doorstep at very compeve rates. Please

however ensure that your engine or part engine is packaged very securely. Preferably it should be

bolted down in a wooden box or crate. This is to minimise the risk of damage in transit.This service is by TNT , service requirements for TNT are collecon and delivery to and from business

address preerred ! Private address can be used but someopne must be there all day to help the

driver load and sign paperwork.

1./ UK Rates. From your doorstep. Collecon & Delivery Boom half of engine (up to 30 kg) each way

.................................................................................................................................................... 35.00

Part or full engine (31 to 55kg) ........................................................................ ...........................45.00

Full engine (56kg to 100kg) .........................................................................................................55.00

2./EEC We can use air or road transport to your door but please contact us rst with details of pack-

age weight and your address so that we can get the best price for you.

3/USA We can arrange for TNT Express to collect your engine parts or full engine from your address,

and return it to your address, a full engine in a crate is approx $450 each way, NB Parts must be

securely crated or boxed, anything bigger than a cylinder head we recommend to pack in a wooden

crate or box, securely bolted down. Please ensure that customs or relevant paper work is lled in cor-

rectly stang that the goods are your own personal eects, and are Vintage motorcycle parts being

sent to the UK for repairs and return to the USA, also on form quote the goods are commodity code

871419000 , failure to do this will incur unnecessary Customs dues and taxes. Approx rates depends

on $ exchange rate, weight of crate ! If you can nd cheaper rates locally, please let us know before

you send crate , so we can expect it. If a wooden crate is used, it must be made form IPCC approved

and stamped wood, or plywood, if not it will not be allowed back into the USA under strict USA pest

controls.

4./ Rest of the World. We can quote also for door to door collecon . Please contact us for a quote.

Collecon and delivery complete bikesThis is best arranged directly between yourslef and a trusted bike moving company, we have details of 3

trusted companies who our customers have used regularly, please contact us for details.

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SRM engineering has its own dedicated motorcycle wheel

department, we oer a complete motorcycle wheel restoraon

service. The emphasis is on enduring nish and strength.

The jobs we undertake range from a basic respoke with zinc

plated spokes through to a complete restoraon services

covering:-

New rims (Chrome/Stainless or Alloy);

Respoke with stainless steel spokes;

Painng the hub;

Fing new wheel bearings;

Fing balancing new tyres;

Assembling and machining the brakes.

To have your wheel renovated simply send the wheel to SRM

engineering and we can return it to you ready to t.

Wheel Secon

With over 20 years experience in building classic motorcycle wheels we have worked on wheels

from all manufacturers, we use the best materials to ensure long life and consistent trued

wheels. Our database of wheel informaon is extensive and from this informaon we can checkyour wheel oset and spoke paern to ensure perfect building.

Spoke sets

Std 10G / 9G Heavy duty (8G) Bued 8/10G

Unpolished/Polished Stainless spokes 55.00 60.00 65.00

(All spoke sets come with Nickel plated brass nipples)

nipple size

Measurement taken in the middle of the nipple

0.250 = 6.40mm

0.275 = 7.00mm

0.300 = 8.00mm

Wheel build & true

Prices for standard (36 or 40 spoke) wheel rebuild

Includes spokes and Nickel plated brass nipples,assembly and nal trueing.

10G or 9G 8G Bued

Unpolished/Polished Stainless spokes 110.00 115.00 120.00

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Wheel Building Secon

Wheel RimsStarng from a blank rim (which we spin on a special jig to check for faults) we are able to put the dimples into the center

of the rim in the required paern, using a CAD program, coordinates are generated to punch or drill the spoke nipple

holes to the correct angle to suit each parcular hub.

Each rim is then chrome plated, our chrome rims are the best nish in the UK

The rims available are:-

Brish made, Chromeplated rimsThis rim is made to be a replacement rim for the DUNLOP and JONES type of rims that were

most commonly ed to Brish motorcycles. It follows the DUNLOP rim prole and reects

the high quality of engineering in the DUNLOP rim.

Each rim is formed with a TIG welded joint carefully done to minimize any distoron of the

rim

All rims are Chrome plated in Britain. As chrome rims are made to order, please allow 4 weeks

extra to complete the rims.

Rims are available in sizes

Diameter Brish width Metric width

19 Wm1 1.60

19 Wm2 1.85

19 Wm3 2.15

18 Wm1 1.60

18 Wm2 1.85

18 Wm3 2.15

17 Wm2 1.85

21 Wm1 1.60

CHROME RIM PRICESChrome rims are made using Brish steel rims and plated in the UK, these are quality

rim but the delay to make them can add 3 weeks to the usual turnaround me, the stainless steel rims below have

a nish as good as chrome and will not corrode, we usually reccomend to use stainless , Chrome rim price each is

91.67

Stainless Steel RimsThe stainless rim provides the looks and shine of the chrome rim with out the fuss and bother. (combined

with stainless spokes you have an almost maintenance free wheel)

The rims are manufactured in Britain in small batches with an emphasis on quality. Each stainless rim is rolled

to the DUNLOP prole from a single piece of quality stainless sheet TIG welded to minimize distoron of the

rim. The rim is then polished. These rims have been thoroughly tested at MIRA.

Rims are available in sizes:

Diameter Brish Size Metric Size

19 Wm1 1.60

19 Wm2 1.85

19 Wm3 2.15

18 Wm1 1.60

18 Wm2 1.85

18 Wm3 2.15

17 Wm2 1.85

21 Wm1 1.60Other stainless rims available inc wider rims.

Stainless Rim Prices:

Rim Width Price

Wm1.................120.83

Wm2.................120.83

Wm3.................120.83

Many rim details are available through our database

but some may need further informaon or a paernrim to be supplied

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Akront Valanced Alloy Rims

You will see these rims ed to hundreds of classic racers all over the world and

many classic Brish road bikes too. We stock the rims in blanks so each rim can be

individually drilled to suit the required hub.

During the 50s and 60s the DUNLOP and the BORRANI valanced (anged) al-

loy rim was the choice of any racer/caf racer or special builder. These rims were

light,strong and well engineered enough for the hardest racer.

SIZES AVAILABLE

Diameter (inch), Brish width, Metric Width, Number of Spoke Price

19 Wm1 1.60 40 96.0019 Wm2 1.85 40 100.00

18 Wm3 2.15 40 110.00

Other sizes are available for special order.

NON VALANCED ALLOY RIMS

Non valanced alloy rims are the plain secon alloy rim as seen on many specials , trials, scram-

bles etc. They are available in a wide range of sizes and widths. Please contact us for details

21 Wm1.................85.00

19 Wm2................90.00

18 Wm3................95.00

Alloy Rims

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Hub skimming and brake shoe lining and skiming

Please note aer we rebuild a wheel, we would recommend that the hub is skimmed as the hubs can distort

when laced up. It makes sense to have your brakes working at maximum eciency to cope with modern trac

condions. The brake shoes can be relined and then machined to suit the newly skimmed hub to give you the

maximum braking eciency.

SKIM HUB Skim motorcycle hub (complete wheel) ............................................................ 47.84

RELINE SHOES Reline the brake shoes with modern brake material oversize (per pair) .......... 30.10

SKIM SHOES Measure brake drum size & machine shoes to suit ......................................... 36.40

Brakes

The following services are available to renovate motorcycle wheel hubs and brake plates:-

POLISH.BP Bead blast & polish alloy Brake plate............................................... from..... 20.80

POLISH.BPE Bead blast brake plate & polish edge ............................................................. 23.12

STOVE.30 Stove enamel Hub ........................................................ ........................................ 47.00

POLISH.HUB Bead blast & Polish Hub ................................................................ ...... from.....31.20

STOVE.22 Stove Brake drum .............................................................. ................................. 18.72

STOVE.31 Stove Wheel rim ............................................................... .................................. 67.60

STOVE.32 Stove Whole Wheel (spoked type) ............................................................... .. 85.00

STOVE.38 Stove Disc (inner)............................................................... ................................. 20.80

QD hub spline repair

Have a worn rear hub spline? Rivets loose? We have made the three dierent types of rear hub inner sleeves with the splines

to Suit A7 A10 B31 B33 A50 A65. The sleeve is available on its own, or you can send in your old hub for recondioning, we strip

hub, clean the hub halves, reassemble with new inner sleeve and rivets and stove enamel the complete hub - so the hub is as

new again!

Inner splined sleeve bare all types ......................................................................57.75

Recondion hub with new sleeve, rivets and paint assembled labour......................75.00

Conical hub repair

SRM have developed the Conical rear hub bearing housing repair. The most common problem is the worn bearing housing,

these rear hubs are almost impossible to nd nowadays.

We bore out the old worn housing, and insert a CNC machined sleeve complete with bearing retainer ring thread, bringing the

centre back to NEW condion.

We are able to modify the hub to take two bearings side by side on the brake side.

SLEEVES LH/RH Con-Hub-repair Sleeve.......................................................24.44

CONICAL-REPAIR Repair bearing housing labour..........................................88.20

CONICAL-TWIN Special twin bearing conversion labour...........................75.00

Hubs & Wheel Maintenance

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Wheel Rim Tapes

RIMTAPE16 16 inch rim tape ........................................................................................................ 1.85





Tyre Inner Tubes

For free advice on suitable tyres for your make and model, please contact the SRM wheel department.

TUBEM01 CONTI Tube D18 3.25 x18 ....................................................................................... 12.00

TUBEM02 CONTI Tube 3.25/3.50/410x19 ............................................................................... 12.00

TUBEM03 CONTI tube E18 100/110 18 ................................................................................... 12.00TUBEM04 CONTI Tube D17 300/325x17 ................................................................................... 12.00

TUBEM05 CONTI Tube 3.50/4.00/4.25 x18 ............................................................................. 12.00

TUBEM06 CONTI Tube D21 2.75/300x21 ................................................................................. 12.00

TUBEM07 CONTI tube E17 350x17 .......................................................................................... 12.00

Tyres Secton

Classic Avon tyres

TYRE001 Avon Speedmaster 325x19 Ribbed front ................................................................ POA

TYRE002 Avon Speedmaster 350x19 Ribbed Front ................................................................ POA

TYRE003A Avon Speedmaster 300x21 Ribbed Front ................................................................. POA

TYRE004 Avon SM MK11 350x19 (Rear) .................................................................................. POATYRE005 Avon SM MK11 400 xS18 (Rear) ................................................................................. POA

TYRE006 Avon triple duty 350 x L19 (sidecar) .......................................................................... POA

TYRE007 Avon Roadrunner 410H19 (U) ................................................................................... POA

Performance Avon tyres

TYRE010 Avon AM26 90/90 V 19 (Sports Front)...................................................................... POA

TYRE011 Avon AM26 100/90 V19 (Sports Universal).............................................................. POA

TYRE012 Avon AM26 100/90 V 18 (Sports Universal) ............................................................ POA

TYRE013 Avon AM26 110/90 V 18 (Sports Rear)...................................................................... POA

TYRE014 Avon AM26 120/90 V 18 (Sports Rear)...................................................................... POA

Classic Dunlop tyres

TYRE020 Dunlop K70 350 x 19 (Universal) .............................................................................. POA

TYRE020-A Dunlop K70 3.25 x 19 (universal) ........................................................................... POA

TYRE021 Dunlop K70 400 S 18 (R) ........................................................................................ POA

TYRE022 Dunlop K81 TT100 360 H 19 (F) ............................................................................. POA

TYRE023 Dunlop K81 TT100 410 H 19 (U) ............................................................................ POA

TYRE024 Dunlop K81 TT100 4.25 H18 (R) .............................................................................. POA

TYRE026 Dunlop K81 TT100 410 H 18 (U) ............................................................................ POA

TYRE027 Dunlop K82 300 S 18 (U) ........................................................................................ POA

TYRE028 Dunlop K82 325 S x 18 (U) ..................................................................................... POA

TYRE029 Dunlop K82 350 S 18 (U) ........................................................................................ POA

Please ring for quote on tyres:- Avon,Bridgestone, Connental, Dunlop ,Metzler, Michelin, Pirrelli.

As the tyre market prices uctuate regularly.

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SRM engineering specialises in all types of electrical repairs and restoraons on classic motorcycleelectrics. Our fully equipped electrical workshop ulises a CRYPTON MAGMASTER and a larger CRYPTON

ELECTRICAL TEST BENCH also able to test magnetos, dynamos and regulator boxes all to full load. Inaddion we have an Alternator/Regulator test rig specially made for the LUCAS RM21 Alternator

The CRYPTON MAGMASTER has been adapted specically to be able to measure the ignion spark anglebetween each cylinder on K2F and K2FC magnetos. Many Brish bikes suer from electrical problems,we are able to source these problems whether it be a single faulty component up to a complete rewire ofthe bike.

SRM specialises in the renovaon of LUCAS magnetos as ed to BSA,TRIUMPH and NORTON twins.Aer WW2 the K2F was the main unit used to provide the ignion for all the popular twin cylinderBrish motorcycles, racing and compeon bikes were catered for with the LUCAS K2FC.The most common problem with original magnetos is failure once hot, due to a breakdown in the

insulaon of the condenser or of the armature windings themselves. In the 1940s the LUCAS M01

(magdyno) unit was used extensively on a variety of Brish single cylinder engines from the WW2 BSA

M20 through ll the GOLDSTAR DBD34 and many other Brish Singles. The unit is easily recognisable

from the mounng of the LUCAS E3H or E3L on top of the magneto.

The magnetos electrical performance is simulatedas if it were onthe engine, we use the CRYPTON MAGMASTER to do a comprehensivetesng programme on each magneto we rebuild. This allows us to make anyslight adjustments to the magneto to achieve the best constant and accurately med spark .The nal running test programme includes:-

Checking the normal spark HT Voltage;Checking the maximum available spark HT Voltage;Checking the ignion ming stability over rev range;Checking the ignion ming for correct ming angle (for most twins this is 180 degrees);Running the magneto for 20 minutes whilst heang to full engine temperature.

When we undertake renovaon of these units we examine the following:-

Mechanical - Bearings, insulaon, washers and shimming the armature

Electrical - Armature windings, Condenser, Slip ring, Points and Bushes

Magnec - Check magnesm and regenerate magneto body

Ignion - Check Spark strength, Spark ming and stability

Any unit sent to us will be fully tested and then we will contact you to discuss the work required.

Each Renovated magneto is backed by our 2 year guarantee.

Electrical Secon

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K2F & K2FC, M01 Magneto Restoraon

Part Number Part Descripon Sales Price

45.8876 Pick up complete 2 screw (screws not inc) ............................. ......... 7.91

45.9190 Pick up Holder & gasket (no brush) ............................ ....................... 7.91

MAG001 ARMATURE rewound with condenser .............................. ............... 93.60

MAG002 Slip ring twin cylinder K2F ............................... ................................. 26.21

M A -G002A Slip ring single cylinder MO1............................................................................. 2 6 . 2 1

MAG003 Contact points brass back plate ............................... ........................ 17.00

MAG004 Contact points steel back plate ................................ ........................ 14.04

MAG004A Complete steel points unit N/A At present............................................ ..................... 00.00

MAG004B Points centre bolt for steel points ............................... ..................... 5.83

MAG004C Points centre bolt for Brass points ............................. ...................... 4.06

MAG005 Cam ring ................................ ................................ ................................. 48.87

MAG006 Pick up gasket good quality material ............................ ...................... 1.12

MAG006A Pick up gasket 2 screw type ............................. ................................. .. 1.03

MAG006B Pick up screw K2FC zinc .............................. ................................. ........ 2.00

MAG006S Pick up screw K2FC S/S ........................... ................................. .......... 2.47

MAG007 Pick up brush and spring ............................ ................................. .......... 5.00

MAG008 Pick up clip stainless steel ............................. ................................. ... 14.40

MAG008A Pick up clip zinc plated ............................... ................................. ......... 8.22

Part Number Part Descripon Sales Price

MAG010 Magneto oil seal 18mm ............................................................. ..................... 5.10

MAG010A Magneto oil seal 15mm early ....................................................... .................. 5.51

MAG011 Star insulang/shim washer 18mm .............................................................. ... 2.19

MAG011A Star insulang/shim washer 15mm ............................................................. .... 2.19

MAG011FC Insulaon washer for N3048....................................... ..................................... 2.17

MAG012 Magneto bearing 15mm ............................................................. ................... 18.35

MAG012FC Special Bearing for K2FC ONLY N3048 ..................................................... 20.79

MAG013 Magneto bearing 18mm ............................................................. ................... 18.72

Part Number Part Descripon

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Sales Price

MAG015 End cover -clip on type with stop ........................................................ ......... 15.60

MAG015A Cover clip Zinc plated .............................................................. ....................... 10.30

MAG016 Cover clip stainless steel ............................................................. .................... 12.15MAG016A End cover screw on with stop ............................................................... ........ 37.44

MAG016B End cover screw on (compeon) ....................................................... .......... 35.36

MAG016C K2F Triangular Clip for covers ............................................................. ........... 4.50

MAG017 Advance retard cable + spring ........................................................... ............ 19.25

MAG017A Short plunger K2F & K2FC ................................................................. .......... 7.20

19.1883 HT lead copper core per foot see 19.1883 ..................................................... 1.59

19.7625 NGK plug caps for magneto ............................................................ ............... 3.29

MAG020 Spark plug A7/A10 iron head ........................................................ ................. 2.75

19.7076A Spark plug A7/A10 alloy head......................... .................................................. 2.50

MAG024 Lucas direcon label (black). ............................................................. .............. 4.68

MAG024C Lucas label Red Compeon K2FC.. ......................................................... .... 4.68

MAG025 Label screws (pair).. .......................................................... ............................... 1.47MAG026 Safety/Spark gap screws zinc .............................................................. ............. 2.07

MAG027 Safety/spark gap screws S/S ................................................................ ............. 4.06

MAG028 Earth brush holder S/S ............................................................. ....................... 6.40

MAG029 Earth brush holder washer ................................................................. ............. 0.84

MAG030 Woodru Key .......................................... ...................................................... 0.84

MAG032 Magneto Fixed drive gear Self extracng SRM Special ........................................................ 54.00

MAG032A Magneto xed gear Triumph type N/A at present.................................................................... 00.00

MAG033 New Auto Advance Unit (ATD) N/A at present ................................................................. ... 00.00

MAG033R Exchange recondioned advance retard unit N/A at present.................................................... 00.00

MAG034 Auto Advance Centre bolt .......................................................... .................... 11.99

MAG035 Auto Advance plate ............................................................. ............................ 3.59

MAG036 Auto Advance C clip .......................................................... .............................. 2.47

MAG036S ATD springs (pair) ............................................................. ............................. 2.34

MAGREBUILD Strip, build and test labour for Magneto ........................................................... 93.60

MAG-REPAIR Magneto repair (no cosmecs) ......................................................... ................ 60.00

REMAGNETISE Remagnese magneto body only....................................................................... 20.00

TIMKIT1 Timing kit A7/A10 ....................................................... ................................... 26.56

MO1 Single magneto partsMAG001S Rewound Armature & Condenser M01 Single......................... ................ 93.60

MAG002A Slip ring single cylinder MO1 ....................................................................26.21

MAG006M Pick up screw M01 type ................................................................................ 1.25

MAG007 Pick up brush and spring .............................................................................. 5.00

MAG009 Earth brush and spring small........................................................................ 2.50

MAG011 Star insulang/shim washer N3048............................................................. 2.19MAG011A Star insulang/shim washer 15mm .............................................................. 2.19

MAG012 E15 magneto bearing (35mm O/D)...............................................................17.64

MAG012FC N3048 magneto bearing (37mm O/D)..........................................................20.79

MAG024 Lucas Direcon Label.......................................................................................4.68

MAG025 Label screws (pair)...........................................................................................1.47

MAG030 Armature woodruf key......................................................................................0.84

MAG031 Armature tab washer........................................................................................2.25

MAG037 M01 Pick up (brushes not included)..............................................................6.76

MAG038 M01 Contact breaker (Points)..........................................................................9.49

MAG039 M01 Fibre Gear................................................................................................42.23

MAG040 End Cover clip (Zinc Plated)...............................................................................8.80MAG041 End Cover (Zinc Plated)......................................................................................6.66

Electrical Parts

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MAG044 Dynamo Strap....................................................................................................7.49Part Number Part Descripon Sales Price

MAG045 Dynamo Strap bush............................................................ 1.87

MAG046 Strap screw (Stainless Steel).................................................3.63

MAG047 End Cover clip (Stainless)....................................................14.98

MAG048 Front Cover gasket..............................................................3.27

MAG049 Earth bush large (7.5mm O/D)...........................................5.31

MAG050 Fricon drive plate..............................................................10.03

MAG051 Advance/Retard Cable......................................................20.00

MAGREBUILD Strip, build and test labour for Magneto ........................... 70.00

MAG-REPAIR Magneto repair (no cosmecs) ......................................... 60.00

TIMKIT1 Timing kit A7/A10, Goldstar, B31................................... 26.56

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Dynamo Restoraon

At SRM we specialise in the renovaon of these parcular models of LUCAS dynamos.

In the 1940s the LUCAS E3H (40 Wa) unit was used extensively on a variety of Brish single cylinder

engines later to be replaced by the more powerful LUCAS E3L (60 Wa).

The E3L dynamo was used on many Brish twins such as the BSA A10,

TRIUMPH T100,T110 and NORTON DOMINATOR.

The design of this dynamo is the same throughout the range but dierent

drive shas are used for dierent models.

Each dynamo is tested on the CRYPTON MAGMASTER to help determine its

condion and an esmate of the cost to renovate the unit is produced.

If the dynamo was to be fully restored a new armature and eld coil would

be ed together with new bearings. The outer body would be Nickel

plated and the alloy ends bead blasted. New brushes would be ed and

then the dynamo would be thoroughly tested.

The tesng procedure is in two parts:-

Firstly the dynamo is wired for a motor test - this runs the dynamo as a motor, the motoring speed is

checked as is the polarity and rotaon. This test also polarises the magnec eld in the eld coil core;

The dynamo is then ed to the CRYPTON MAGMASTER or the CRYPTON ELECTRICAL TEST BENCH to

be driven as if the dynamo were ed to the engine. This test conrms the dynamo will charge when

ed to the engine and in the correct polarity for the earthing system on the bike. The dynamo is run

for a minimumof 20 minutes to conrm it has a stable output.

Send your dynamo to us, we will test it to ascertain its faults and contact you to discuss the work

required (we can provide you with an esmate of the cost before any work is

carried out).

Each Renovated dynamo is backed by a 2 year guarantee.

12v wound armatures and 12v eld coils are also available.

Dynamo E3L & E3H Restoraon

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Part number Parts descripon Price

29.2203/S.STEEL Dynamo eye bolt stainless steel A10................ 6.76

65.2352 Eye bolt plug ................................................................ 1.59

67.1876/S.STEEL Dynamo strap stainless steel A10................. 15.60

67.0353 Dynamo strap stud......................................................... 1.59

DYN001 6 Volt armature E3L A7 A10 Twins .................... 91.50

DYN001H 6v Armature E3H type (short) ............................. 81.90

DYN001S 6 Volt armature E3L Singles ................................. 91.50

DYN001T 6 Volt armature E3L Triumph type ..................... 81.12

DYN002 6 Volt Field coil ........................................................... 25.99

DYN002H Field coil E3H ........................................................ ...... 26.00

DYN003 Field coil screws ................................................... ....... 2.17DYN004 12 Volt armature E3L Twins ..................................... 84.00

DYN005 12 Volt armature E3L singles ................................... 84.00

DYN006 12 Volt Field coil .......................................................... 33.00

DYN006T 12V Armature Triumph Twins only ......................... 91.50

DYN007 Through bolt & nut (each) ......................................... 6.36

DYN008 1 piece end cover ........................................................ 26.68

DYN008A Grommet for cover ..................................................... 3.64

DYN009 2 piece cover Strap ................................................... 11.65

DYN009A 2 piece cover end cap ................................................ 20.60

DYN009B 2 piece end cover strap gasket ............................... 1.99

DYN009C Cover terminal and screw each ........................................ 3.49

DYN013 Dynamo brushes E3L pair ......................................... 18.62

DYN013H Dynamo brushes E3H ................................................ 14.20

DYN014 Bakelite brush holder ................................................ 23.92

DYN015 E3L Cable Clamp -Late ..................................................... ... 3.41

DYN016 Large bearing See Pt No 6202-2RS ...................... 7.28

DYN017 Small bearing See Pt No 608-2RS ......................... 5.72

DYN026 Mag/dyno locang bolt (singles only)..................... 5.00

DYN026N Taper Nut for Magdyno bolt ................................... 5.00

DYN027 E3L Triumph oil seal .................................................... ....... 4.68

DYN028 E3L Triumph Drive Gear ................................................... 31.29

DYN029 E3L Gear Bolt ....................................................... ............... 2.85

DYN031 E3L Drive gear Magdyno ................................................... 27.73

DYN032 E3L locking ring (Lucas no 200224) .............................. 6.24

DYN033 Pre-unit Triumph dynamo strap ............................. 7.25DYN035 Dynamo drive gear Lucas Mag/Dyno 464269........ 21.22

DYNOREBUILD Strip, build and test labour for Dynamo .......... 67.60

Labour charge to recondion a dynamo is 55.00 + VAT

(Spare parts are extra as following list)

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SRM 12Volt Dynamo Conversions

1.The easy way to perform a 12v conversion is basically to use your exisng 6v dynamo and couple it to a6-12v convertor electronic regulator.

In a normal 6v system the dynamo will start charging at around 1000 rpm, to power a 12v system the

dynamo now starts charging at about 1500rpm. This is not usually a problem as you would not normally

ride around at such a low RPM. To lower the RPM at which charging occurs you can t an srm Dynamo belt

conversion kit (which has a slightly higher overall rao than the standard chain drive and will speed the

dynamo up)

6v to 12v Convertor electronic regulator units also can be used as a 6volt regulator

DVR2-N 6v to 12volt converta for 6 and 12v armatures negave earth ...................52.00

DVR2-P 6 to 12v dynamo regulator for 6 and 12v armature posve earth ............ 52.00

2. The other method to achieve the 12v system is to replace the dynamo armature andeld coil wound for 12v. To do this the thick 6v windings have been replaced with twice

as many windings of thinner wire. The number of windings is proporonal to the voltage produced - so

the dynamo now produces 12v at 1000rpm. Since the wire in the 12v windings is thinner it can only

carry half the current (amps) of the 6v windings so there is no actual gain in output power. As a conse-quence the 12v wound dynamo must be used with a compatable electronic regulator to prevent them

from burning out.

12v Wound dynamo parts

DYN004 12 Volt armature E3L Twins ........................................................... 84.00

DYN005 12 Volt armature E3L singles ....................................................... .. 84.00

DYN006 12 Volt Field coil ........ .............................................................. ........ 33.00

DYN006T 12V Armature Triumph Twins only ............................................... 91.50

12v Electronic regulators for 12v wound dynamos



Dynamo Conversions

There are two ways to achieve a conversion from the standard 6v system as used on all LUCAS E3L

powered Brish bikes. It is a property of any dynamo that the faster it spins the more voltage it willproduce, it is the purpose of the regulator box to set the level at which the system operates.

Dynamo Belt Drive ConversionThis new kit available from only SRM, is the best available. Others on the market consist of a V

type belt and pulleys, so the adjustment is crical, and any oil or grease will make it slip.

Ours as you can see is far superior by ulising posive toothed pulleys for posive drive, and a

Toothed steel wire reinforced belt that is suitable for use in oil or grease.

The toothed pulleys also gear up the Dynamo speed by which gives you a posive charge at

lower Rpm.

The kit is a direct replacement and easy to t. Full instrucons included.

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6v Dynamo Regulator BoxesElectronic regulator boxes are available as a direct replacement for the 6v mechanical regula-

tors.

The electronic regulator oers beer regulaon and reliability.

These regulators are very ecient and consume very lile power from the system.



These units will t inside the original metal regulator box with the original relays removed.

DYNO-BELT-DRIVE Toothed belt drive kit +10% Rpm .......... 77.48

A suitable baery is available, however slight modicaon of the baery tray on the swinging arm models is

required.

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The Alternator rotor to suit the RM21 is common for ALL the types of stator windings list below.

LU54202299 LUCAS Genuine RM21 ROTOR Not paern........................................99.99

The three common types of alternator stator are listed below

3 WIRE 6 volt type (120W single phase)

This is a direct replacement for the open windings stator found on early 1960s motorcycles.

LU47204 Lucas 6v single phase 120W Stator ........................................ 90.52

6 volt alternators can be converted to 12v by linking the Green/Yellow wire to the Green/Blackwire and using a 12v Regulator /recer unit

SRM-RR-001 12v Single phase regulator/recer .............................. 25.00

2 WIRE 12v TYPE (120W single phase)

This is the most common type of stator winding being used from the mid 1960s unl the late

1970s.

LU47205 12v single phase 120W Stator Paern.......................................52.41

LU47205 Lucas 12v single phase 120W Stator when available...........90.52

These units are best coupled to a 12v recer/regulator unit

SRM-RR-001 12v Single phase regulator /recer .................................... 25.00

3 WIRE 12v TYPE (180W Three phase)

This was introduced as a simple upgrade for the standard stators and can be disnguished by

having 9 inner poles (single phase units have only 6 poles).

The stator uses the standard Rotor but must have a matching three phase regulator unit. It is a

direct replacement increasing the power by 60W.

LU47244 Lucas 12v 3 phase 180W stator ............................................... 92.41

SRM-RR-003 12v 3 phase Regulator/recer unit .................................. 30.98

Regulator /Recer units are a direct replacement for the standard recer and Zenor diode. Not only do these

units do the job of recfying and regulang the charge beer than the old system they also consume less powerand are more reliable!

Alternators

The original alternator stators (open winding type) were prone to problems with vibraon shaking windings

loose. The remedy for this was to encapsulate the windings in resin. All the new alternator stators are of

this type. By the 1960s the alternators had been standardized with the LUCAS RM21 being most commonly

used in bikes over 500cc. With age the Rotor does lose some of it s magnec strength (although it may sllappear to be strongly magnec) this will eect the alternator output, the alternator may sll be charging

but may not be able to cope with full load (ie Main beam lights on).

Electronic Ignion to replace Points

Electronic ignion oers many

advantages over the original points ignion system.

No contact points to wear.

High energy spark throughout the whole rev range

Electronically controlled Advance /Retard & More

accurate ming.

These factors produce a smoother, more powerful and

economical engine

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ANALOQUE IGNITION KITS

The Analogue ignion kits have a linear (straight line) advance curve matched to each engine type.

The standard coils can be used, but the use of two 6 volt coils will increase the spark energy for more high

performance engines. We would recommend the use of a single DUAL SPARK coil, these coils are robust and

compact and give a tremendous spark.

IGN.1 Boyer Mk3 Analoque ignion kit 12v TRI/BSA UNIT TWINS................ 87.88

IGN.1 Boyer Mk3 Analogue ignion kit 12v NORTON TWIN.............................. 87.88

IGN.2 Boyer Mk3 Analogue ignion kit 6v TRI/BSA TWINS........................... 87.88

COIL12 DUAL COIL DUAL Output (3 ohms) Dyna Coil.............................................. 74.99

Digital electronic ignion kits are similar to the analogue units but

have a digitally mapped ignion curve. The mapped advance curve

is made up of a series of points that opmise the ignion advance,this wont give any extra top end power but will boost the mid range

by up to 10%.

Digital kits can be used with a pair of standard type 6v coils although

beer

performance is obtained using a dual output coil.

IGN.3 Boyer Digital ignion kit 12v BSA/TRI TWINS.........109.20

IGN.3N Boyer Digital ignion kit 12v NORTON COMANDO.........109.20

COIL12 DUAL COIL DUAL Output (3 ohms) Dyna Coil....................................... 74.99

Digital Electronic Ignion Kits

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Micro-Power Electronic Ignion KitsThe Micro-power kits are similar to the Digital kit with the same mapped advance curve, but the Micro-power

kit is designed for very low power consumpon (9 Was) and to do this it uses a special coil (as used in the

modern Triumph). This small but powerful dual coil has a very low resistance and can only be used with the

Micro -power ignion box.

The Micro-power kit comes complete with the special dual coil.IGN.4 Boyer Micro-power ignion kit 12v BSA/TRI TWINS ............ 169.00

IGN.4N Boyer Micro-power ignion kit 12V NORTON ...................... 169.00

We also stock a range of spare parts for all the kits listed above together

with ming kits to help set the ignion ming accurately.

TIMING-KIT Timing disc, piston stop & full instrucons ...... 13.26

PAZON Electronic IgnionTheseare a recent addion to the market. PAZON kits have many useful

features that help the ng and seng up the ignion kit.

The ignion boxes have long leads so no connectors are required and informaon is given on the sta-

tor plate for advance/retard direcon and a degree scale to aid adjustment.

A superior quality ignion system.

PAZON-1 Pazon SUREFIRE ignion kit TRI/BSA/NORTON TWINS..................... 87.88

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SureFire (analogue)

Ignion System

for 360degree twins

SmartFire (digital) Ignion System

available for 360degree twins

and 90degree twins

Feature easy to set up

LED Timing Light

and adjustable rev limiter.

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SRM K2F & K2FC BTH Magneto Electronic conversion

At SRM we have produced an electronic ignion conversion kit for the LUCAS K2F and K2FCmagnetos. The kit has been designed to retain the original look of the magneto and yet have all

the advantages of the Boyer MICRO-POWER ignion system. This system is used because of thelow power consumpon of the electronics. The electronics are also very compact allowing them to be easilyhidden on the bike. A special sensor unit, manufactured at SRM, replaces the original magneto armature.This unit provides the ming signal for the ignion box and small dual output coil. The electronic ignionsystem provides an extra high energy spark at start up, precise ignion ming, mapped advance curve anda high power coil. The kit is simple enough for ng athome (no machining is required) and is supplied with all the parts required and comprehensiveinstrucons. The kit requires a 12v electrical system but can be wired for posive or negaveearth. (If you have a 6v system this can be easily converted to 12v)

The sensor unit (above) ts intothe magneto housing.Image above shows the kit andhow it looks ed inside themagneto body.

MAGKIT-1 Electronic ignion kit K2F Twin magnetos .....350.00

MAGKIT-1C Electronic ignion kit K2FC ............................... 350.00MAGKIT-4 Electronic ignion kit BTH Twins ............................... 350.00MAGKIT-5 Electronic ignion kit Distributor Triumph twins 12v ............................... 350.00

Our Kits Include:-

SRM Sensor Unit

Dummy HT Pickups

Ignion Box

Dual Output Coil

HT Leads and Plugs

Ignion Switch

Fuse and Holder

Cable and Connectors

Full Installaon Instrucons

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We would advise you also purchase an SRM Timing kit, this

is a great help in accurately seng the electronic ignion.

The Timing kit for the BSA A7/A10 comes with a special

cranksha nut to aid mounng a degree disc to the cranksha and

easy torquing up of the cushdrive.

TIMKIT-1 BSA A7/A10 Timing kit..................................26.56

TIMKIT-1 BSA Goldstar Timing kit................................26.56

TIMING-KIT-3 TRIUMPH/NORTON Univeral kit...................13.26

Magneto kit sparesSRM-IGNBOX-1 Twins magneto ignion box ........................................ 78.00

SRM-MAGCOIL-1 Twin lead coil for magneto kit ................................... 67.60

SRM-MAG-ROTOR Magneto electronic kit rotor ..................................... 21.52

SRM-PICKUP-1 Magneto kit pick up twins complete ......................... 16.64

SRM-PICKUP-1FC Pick up /Electronic mag -screw type ........................ 16.64

SRM-STATOR-PLATE Magneto kits stator plate complete ......................... 24.28

At SRM we have produced an electronic ignion conversion kit for the LUCAS Singles range of magnetos.

It is suitable for any single ed with the Magdyno unit such as Goldstar,B31,B33, Trumph singles, Norton

singles, Ariel singles even Panther singles!! AJS Matchless etc

The kit has been designed to retain the original look of the magneto and yet have all the advantages of

the Boyer MICRO-POWER ignion system, this is an important factor with the

limited power of a LUCAS dynamo (60 Was). The electronics are also very

compact allowing them to be easily hidden on the bike. A special sensor unit,manufactured at SRM,

replaces the original magneto armature. This unit provides the ming signal for

the ignion box and small coil. The electronic ignion system provides precise

ignion ming, mapped advance curve and extra spark energy at start up.

The kit is simple enough for ng at home and is supplied with

comprehensive ng instrucons.

The kit requires a 12v electrical system but can be wired for posive or nega-

ve earth. (If you have a 6v system this can be easily converted to 12v)

SRM M01 MAGDYNO K1F N1 & SR

Magneto Single cylinderElectronic Conversion kits

MAGKIT-2 M01 electronic ignion conversion kit .........................................350.00

MAGKIT-3 Electronic ignion kit K1F Singles ............................... 350.00NEW DEVELOPMENT 2013 ! Electronic ignion kits for the Singles magnetos Lucas N1 and SR

Spares

SRM - IGNBOX - 2 Singles magneto Ignion box......................................78.00

SRM - MAGCOIL - 2 Single Output Coil......................................................67.60

SRM - MAG - ROTOR Magneto Electronic rotor..........................................21.52

SRM - STATUR - PLATE Magneto Kits Stator Plate Complete...........................24.28

Kits Include

SRM Sensor Unit, Ignion Box, Single Output Coil HT Lead and Plug Cap, Fuse and Holder, Ignion Switch

Cable and Connectors, Full Installaon Instrucons

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A65 Oil Pump A10 Oil Pump

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A10, A65 Oil Pumps

Made to very high precision tolerances, these high delivery oil pumps are suitable as direct

replacement for BSA Twins, A7 A10 A50 A65, all come with rev drive as standard. The ulmate in sus-

tained high oil pressure to give your engine the life blood it requires to survive modern day riding and

hard use, it will help to reduce Wet sumping! helping to protect your engine from bearing and bush

failure!

CNC Machined from Dural alloy, and Anodised coated pump kit includes gasket, xing bolts, crankshaworm drive gear and tab washer.

42.0115 Oil pump complete SRM Billet high delivery.................238.25

68.0941 High delivery oil pump for BSA A50 A65.......................238.25

New for 2013 improved oil pump to help reduce wet sumping !

the internal feed and return cavies have a sealing system to

prevent bleed by when standing.

High Delivery Oil Pumps S/S Pressure Release Valves

Stainless Steel Pressure Release Valves

For all BSA and Triumph twin cylinder models and BSA/Triumph unit singles, our CNC machined stainless

steel pressure release valves has a stainless body, stainless dome cap and stainless piston. Each one is

hand assembled and checked for correct pressure blow o. Available for - BSA B44 B50 A7 A10 A50 A65,

Triumph 3TA 5TA T100 5T 6T T110 T120 T140 and NORTON twins

SRM-71.2370 Stainless steel pressure release valve also 71.3440..........39.00

SRM-70.2795 Pop out buon Pressure release valve stainless steel ...... 47.67

SRM-06.6195A Norton Twins stainless steel pressure release valve ......... 39.00

SRM-70-6595 Triumph T150, T160 BSA Rocket 3 (75psi)............................39.00

Norton PRV Triumph PRV Triumph/BSA PRV

The special SRM parts are CNC manufactured exclusive designs unless stated otherwise. SRM rigorously test

and evaluate all our products and they will meet or exceed all stated tolerances, capacies and performancecriteria. We do not manufacture for third pares so if it isnt from SRM it isnt SRM!

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01970 627771

NOW AVAILABLE -A10 Large journal conrods, A65 and A50 conrods, T120 T110 Conrods and Norton

750/850cc conrods,Also Dominator rods and early Triumph pre-unit shell bearing cobversion rods to

convert whitemetal rods to bearing shells.

Each Conrod is CNC precision machined high spec

alloy. The rods weighs very close to standard con-

rods, so no messy machining of the cranksha and

ywheel to get the cranksha balance correct.

Nice machined radius on beams of rods for more

strength, highly polished nish.

Can you really trust those 30 to 40 year old conrods?A pair of these is a whole lot less than replacing all

the parts aer a conrod failure!

Alloy rods a pair for any machine listed above ...................

................330.00

SRM Alloy CNC machined high strength conrods for BSA

Triumph and Nortons!

Billet CNC Finned inspecon coversSRM-71.3671-TRI Triumph T140 6 bolt rocker inspecon cover with Logo each............ ........................31.50

SRM-67.0263 A7/A10 Cover....................(pair )................... ... 52.50

These are a Direct replacement for the original Items

Billet CNC Finned Rocker Oil Feed Pipes

SRM-42.0048 Alloy rocker feed pipe A7 A10 ................................ .............. 31.20

SRM-42.46 Gold star Rocker oil feed pipe ............................. ......... ........ 31.20

SRM-70.6349 T120 Finned alloy rocker feed pipe........................... ........... 31.20

SRM-71.3350 T140 nned alloy rocker feed pipe ............................... ....... 31.20

These are a direct replacement for the original Items.

The bolts, pipes, clips, and washers are also available.

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SRMSF1 BSA A7 A10 A50 A65 Sump lter kit .... 39.00

SRMSF2 BSA pre-unit singles ...... 39.00

SRMSF3 BSA unit singles ............ 39.00

SRMSF4 Triumph pre unit twin...........31.20

The drain plug is easily removed for quick and easy sump draining (wet sumping)

CNC Billet nned alloy plate. A strong permanent magnet is built into the stainless steel drain plug.

This neat device extracts damaging ferrous metal parcles from the oil. Normally these ny parclescirculate in your oil, accelerang wear and passing through all the gauze lters.

SRM magnec sump lters

Clutch pressure plate kits

The CNC Billet SRM Superli Alloy Clutch Pressure Plate takes the crunch out of clutches, together

with the radial needle roller li device pushes the pressure plate out squarely and true to the main-

sha. The sturdy no-drag alloy pressure plate replaces the inferior pressed steel item.

For the ulmate feel we recommend ng

a mulplate fricon kit, which includes 7

narrow fricon plates and one extra steel

plate to t with your original six steel plain

plates. This gives a very good clutch with the

minimum of spring pressure

MULITPLATE-KITMulplate fricon kit, ...........77.50

SRMPP1 BSA/Triumph 3 spring models Pressure plate kit ............ 54.17

SRMPP2 BSA A50 A65 & TRIUMPH 4 spring models ...................... 54.17

SRMPP3 BSA pre-unit 4 spring .............................................................. 54.17

SRMPP4 Triumph 3TA 5TA 3 spring ..................................................... 54.17

SRMPP5 Triumph 3TA 5TA 4 spring ...................................................... 54.17

SRM Dynamo Belt Drive Conversion Kit

This kit exclusive from SRM, ulising posive toothed pulleys for posive drive, and a Toothed steel

wire reinforced belt. The toothed pulleys also gear up the Dynamo speed by which gives you a posive

charge at lower Rpm, Lights that you can see with and have a charged baery into the bargain!DYNO-BELT-DRIVE Toothed belt drive kit ................... 77.48

DYNO-BELT Spare belt for kit ............................16.96

CAUTION When converng from a 6 volt to 12 volt system,

the baery and bulbs will also need to be changed. Pleasecontact for further details if you are unsure about which

components you may need

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Our new range of camshas are a stamp forging to give

strong grain structure and durability.

The material is SAE8620 alloy steel (containing Molybdenum forbeer wear resistance), The Cam is precision CNC ground, then

heat treated to the correct hardness, The best camsha available

on the market.

67.0334 A7 A10 plunger and Gold Flash camsha 115.00

67.0356 A7,A10 S/Rocket camsha forged .......... 115.00

67.0357 A7 A10 Spiire camsha forged ............. 115.00

68.0473 A65 Spiire Camsha...............................108.42

68.0474 A65 Race Camsha......................................128.34

SRM A7, A10, A50,A65 High Quality Forged Camshas

These are high quality taper roller bearings specially modied by us for BSAs

and Triumphs. These are a direct replacement for the standard cup and cone ball

race. The advantages of a roller bearing are: improved handling; easier and fewer

adjustments; and long life - up to 250,000 miles.

SRMTR1 BSA A+B range swing arm models ............................. ............. 39.29

SRMTR2 T120 T150 Trident and BSA R3 ...................................... 34.84

SRMTR5 BSA unit singles up to 1970 ............................................... 45.00

And our conversion taper roller steering head bearings, to convert A7 A10 A50 A65

frames to take T140 Disc front end or Conical hub type front end, also the same kit

ts BSA B44 and B25 to take Conical hub front end and T140 disc front end & B33

SRMTR8 T140 disc/conical forks to A10 A65 B25 B44 ............................ 48.68

SRM Taper roller Steering head bearings

A7 A10 B33 Gold Star Cush drive nut

Sick of having your cush drive nut come loose?SRM have the answer ! Our new cush drive nut is made as BSA should have done

it in the rst place, this nut must be torqued to 65 foot lbs. This is not possible

with a C spanner!! but with a hex head, you can now use a torque wrench to get

it right!

SRM 42 0071.....................................13.72

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Mikuni Carbureors

Rather than waste me and money on expensive carb recondioning we

would recommend the ng of a new Mikuni carb Kit, the new carb

oers performance and smooth running that is beyond the realisc

capabilies of the older Amal stock tments.

Fully jeed and ready to be ed to your engine, the carbs come com-

plete with the special carb to cylinder head adaptor, nice slim pancake air

lter with a chrome back, and a nylon lined cable.

Available for BSA range A7 A10 A50 A65 and Triumph T100 6T T110 T120 T140

(not suitable for T140 parallel ports)

For Single carb Triumphs a special alloy inlet manifold is available

SINGLE CARB KIT .............................................(from) 195.00

TWIN CARB KIT.................................................(from) 390.00

Included in the kit is the jeed carb, throle cable, rubber manifold with screws, adaptor plate with screws and

a pancake style lter.

Please enquire and state your make and model

and we can quote for the correct kit for your bike.

A choke cable conversion kit is also available.

NEW DEVELOPMENTS 2013

Flat slide PWK Khein clone carbureors, we have currently on test the at slide Kheine clone carbs, so

far the rolling road results and raod tesng have been very good, the carbbodies are smaller and neater than

the Mikunis , so beer for applicaons with limited space , look out for news on current developments on our

web site.

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01970 627771

A complete, fully proven conversion for A50 or A65 BSA

engines to raise the capacity to 750cc or 840cc with A10

crank ed and 850cc up to 900cc with special long

stroke one piece billet crankshas ed. This kit has

established itself as an essenal part of the compeon

scene over many years of use on customers engines in

the engine proving world of sidecar and solo racing.

The design eciency gives a 750cc cylinder barrel height that is less than

a standard A65 650cc barrel. Large well matched ns give a lower running temperature

than the standard engines.

Modicaons are necessary to t the kit on engines 1962-73, the crankcase mouth must be machined to take the

bigger and stronger diameter of the bore sleeves.

Engines earlier than 1970 require a cylinder base stud change to the 3/8 dia type (Drill and tapping thread kit is

available for this job).

Standard cam follower tappets are used, if a new spiire or race camsha is to be ed we would advise that a

new set of our cam follwers are also ed.

500cc engines will need to be ed with a suitable 650cc cylinder head.

It is not necessary to modify the cylinder head when converng 650cc engines

We recommended that the cylinder head is gas owed, to our spec and ed with our special 1.725 (43.5mm)

large inlet valves. The 750cc kit uses 32mm inlet ports and Carbureors, 840cc to 900cc use 34mm inlet ports and

carbureors.

Eecve, reliable lubrucaon is essenal due to the extra performance and power output from the big bore kits,

the we cannot emphasise the importance of having the cranksha main bush and oiling system converted to our

Needle roller bearing and oil end feed modicaon.

Kit specicaon:-

1). Cylinder Block Alloy .

Bore 79mm standard Oversizes +.020 . The nal bore/stroke relaonship of the 79mm x 74mm.

2). Pistons complete - high grade alloy with oil grooves for beer cylinder lubricaon.

3). Special set of high performance push rods

4). Cylinder head gasket annealed Solid copper. Available in two thicknesses to alter compression rao. O rings for oil drainthrough block.

5). High tensile Studs and xing bolts.

6). Base gasket supplied.

When ordering, state clearly the year of the engine to be converted, whether for road

or race applicaon and if the 3/8 stud kit is required.

Standard cylinder 650cc alloy cylinder b

Documents

2013 Srm Services 2