Chapter12 Headsets

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  • 12-1Sutherlands 7th Edition

    CHAPTER 12Chapter 12 Table of Contents

    Threaded Standard

    Illustrations & Dimensions 12-812-9

    Recent Models, Stack Heights 12-1012-11

    Threadless Standard

    Illustrations & Dimensions 12-1212-13

    Recent Models, Stack Heights 12-1412-17

    Threadless Low-Profile

    Illustrations & Dimensions 12-1812-19

    Recent Models, Stack Heights 12-19

    Threadless Integrated

    Illustrations & Dimensions 12-2012-21

    Recent Models, Stack Heights 12-2212-23

    Threadless Semi-Integrated

    Illustrations & Dimensions 12-2412-25

    Recent Models, Stack Heights 12-2612-27

    Threaded Semi-Integrated

    Illustrations & Dimensions 12-2812-29

    Recent Models, Stack Heights 12-29

    Headset Identification

    Visual Cues & Notes 12-212-3

    Summary of Headset Types 12-412-5

    Headset Fit

    Headset Fit to Frame & Fork 12-6

    Steerer Tube & Crown Race Diameters 12-6

    Headset to Head Tube Fit, Common Types 12-7

    Integrated Headset Head Tube Fit 12-7

    HEADSETS

    12heaA_8Pc_df.indd 1 8/20/04 11:01:29 AM

  • 12-2 Sutherlands 7th Edition 12-3Sutherlands 7th Edition

    HEADSETS

    CHAPTER 12

    HEADSETS

    CHAPTER 12Headset Identification Headset Identification (continued)

    (continued)

    Threaded Standard

    Threadless Standard

    Threadless Low-Prole

    Common versionsCampagnolo, Tange, Shimano, etc.

    Common versions AheadSet, Cane Creek

    Common versionsColumbus, Intellaset, Slimstak

    Available sizes 1", 118", 1"

    Available sizes1", 118", 1", 1.5"

    Available sizes1", 118"

    Notes Quickly becoming rare on newer bicycles. Principally found on older or city bikes.

    Notes Most popular system. 1.5" is newest size. Cannondale was rst to use this, but made a running change to a nal standard with a deeper head tube bore (25.4 mm versus 11 mm ream depth). On Cannon-dales, carefully match stem to steerer diameter, as there may be some nonstandard diameters.

    Notes Idea being promoted by Columbus. It combines the simplicity of external cups with a low-prole look. A larger diameter head tube is required than with a traditional threadless headset.

    More details Page 12-8

    More detailsPage 12-12

    More detailsPage 12-18

    VISUAL CUES & NOTES VISUAL CUES & NOTES (continued)

    Threadless Integrated

    Threadless Semi-Integrated

    Threaded Semi-Integrated

    Common versions Integrated System (Cane Creek) Hiddenset (Campagnolo)

    Common versions Zero Stack (Cane Creek) Perdido (Chris King)

    Common versions Not common

    Available sizes1", 118"

    Available sizes 1", 118"

    Available sizes118"

    NotesThe Cane Creek standard is predominant.The Campagnolo standard is also used. Other standards are quite rare.

    Notes The Cane Creek standard is almost universally used. Other standards exist, but are quite rare.

    NotesFound on some Giant bicycles.Mainly an OE (original equipment) specication for European style city bikes.

    More detailsPage 12-20

    More detailsPage 12-24

    More detailsPage 12-28

    12heaA_8Pc_df.indd 2-3 8/20/04 11:01:30 AM

  • 12-2 Sutherlands 7th Edition 12-3Sutherlands 7th Edition

    HEADSETS

    CHAPTER 12

    HEADSETS

    CHAPTER 12Headset Identification Headset Identification (continued)

    (continued)

    Threaded Standard

    Threadless Standard

    Threadless Low-Prole

    Common versionsCampagnolo, Tange, Shimano, etc.

    Common versions AheadSet, Cane Creek

    Common versionsColumbus, Intellaset, Slimstak

    Available sizes 1", 118", 1"

    Available sizes1", 118", 1", 1.5"

    Available sizes1", 118"

    Notes Quickly becoming rare on newer bicycles. Principally found on older or city bikes.

    Notes Most popular system. 1.5" is newest size. Cannondale was rst to use this, but made a running change to a nal standard with a deeper head tube bore (25.4 mm versus 11 mm ream depth). On Cannon-dales, carefully match stem to steerer diameter, as there may be some nonstandard diameters.

    Notes Idea being promoted by Columbus. It combines the simplicity of external cups with a low-prole look. A larger diameter head tube is required than with a traditional threadless headset.

    More details Page 12-8

    More detailsPage 12-12

    More detailsPage 12-18

    VISUAL CUES & NOTES VISUAL CUES & NOTES (continued)

    Threadless Integrated

    Threadless Semi-Integrated

    Threaded Semi-Integrated

    Common versions Integrated System (Cane Creek) Hiddenset (Campagnolo)

    Common versions Zero Stack (Cane Creek) Perdido (Chris King)

    Common versions Not common

    Available sizes1", 118"

    Available sizes 1", 118"

    Available sizes118"

    NotesThe Cane Creek standard is predominant.The Campagnolo standard is also used. Other standards are quite rare.

    Notes The Cane Creek standard is almost universally used. Other standards exist, but are quite rare.

    NotesFound on some Giant bicycles.Mainly an OE (original equipment) specication for European style city bikes.

    More detailsPage 12-20

    More detailsPage 12-24

    More detailsPage 12-28

    12heaA_8Pc_df.indd 2-3 8/20/04 11:01:30 AM

  • 12-4 Sutherlands 7th Edition 12-5Sutherlands 7th Edition

    CHAPTER 12

    HEADSETS

    CHAPTER 12

    THREADEDDerived from the original 1" diameter head tube

    national standards now typically standardized

    as follows:

    1" JIS standard. JIS (Japanese Industrial Stan-dard) is common on lower-priced bikes from

    Japan, Taiwan, and China.

    1" Professional (Campagnolo) standard: pre-dominates among aftermarket headsets and

    higher-end bikes and framesets. JIS dimen-

    sioned bikes can be milled to Professional

    standard. The opposite is not true.

    118" from the original Tioga design; also used on some tandems and mopeds.

    1" from the original Gary Fisher design.

    THREADLESS Standard/AheadSet type1" JIS standard.

    1" Professional dimensional standard, more common for aftermarket headsets. JIS dimen-

    sioned forks and frames can be reamed to Pro-

    fessional standard.

    118" to Tioga standard.

    1" to Gary Fisher standard.

    1.5" (One.point.ve): a cooperative standard from Cane Creek, Manitou and others. Cannon-

    dale may have been the rst company to use

    a 1" head tube. Cannondale initially used

    a ream depth of 11 mm, but then changed to

    25.4 mm, the same as the cooperative standard.

    Cane Creek makes a special headset to convert

    Headshox equipped Cannondales to forks with

    a 1 18" steerer. Cannondale has also used some

    nonstandard stem/steerer sizes.

    THREADLESS LOW-PROFILE Intellaset/Slimstak1" and 118" Uses conventional external cups, ush to the sides of the head tube. Most com-

    mon in Europe. Headset adjustment and stem

    attachment follow the same procedures as for

    any standard threadless headset. It can be con-

    sidered a subset or derivative of the standard

    threadless design.

    THREADLESS INTEGRATEDBearing cartridges are installed into an enlarged

    and specially machined head tube without cups,

    achieving the lowest stack height of any design.

    This design requires especially good ream con-

    centricity and depth control. Headset adjustment

    and stem attachment follow the same procedures

    as for a standard threadless headset.

    1" and 118" Cane Creek standard (mostly 1 18").

    1" and 118" Campagnolo Hiddenset standard.

    1" and 118" other standard(s), very rare.

    THREADLESS SEMI-INTEGRATEDSometimes confused with Integrated; has cups

    semi-recessed (and pressed) into and onto the

    head tube to achieve a low stack height. Head

    tube diameter is large to accommodate the re-

    cessed cups. Headset adjustment and stem at-

    tachment follow the same procedures as with

    any standard threadless headset.

    1" and 118" Cane Creek Zero Stack standard (95% of market share, mostly in the 1 18" size).

    1" and 118" to various other standards, very rare.

    THREADED SEMI-INTEGRATED 1" and 118" New, fairly rare, and mainly on Eu-ropean city bikes. Combines the large diameter

    head tube of the semi-integrated type (similar

    dimensions) with a threaded steerer tube for

    greater stem height adjustability. This type of

    headset may be found on some Giant bicycles.

    UNUSUAL COMBINATIONSSome bicycles combine a 1" lower stack with

    a 1 18" upper stack (e.g., Trek 5900); other bicy-

    cles combine a 1" O.D. fork with a 1 18" headset,

    using special parts so as to deplete old stock;

    some RockShox 1" forks have JIS dimensioned

    crown race seats; one titanium Litespeed model

    was designed for an integrated headset using

    sleeves inserted into the head tube, and there

    are yet other unusual combinations. Mostly,

    these exceptions and hybrids follow the general

    guidelinesthough with a twist. Being aware

    of the normal standards should help you cope

    more easily.

    BMX EXCEPTIONSBMX bicycles typically follow the above stan-

    dards, though for the 1" size and mainly on

    older bicycles, there is also an increasingly less

    common original standard using a 1" diam-

    eter steerer tube with 32.7 mm OD cups pressed

    into a 32.5 mm ID head tube. Crown race seat OD

    is 26.5 mm and crown race ID is 26.4 mm, like

    those of the 1" Professional.

    Headsets Summary Headsets Summary (continued)HEADSETS

    ODDBALLS

    Being aware of standa