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LiL-Lightnin First of all, thank you for your purchase. This is a fast building, fun little Twin
Motor model. It also makes for a pretty good aileron trainer. Items you will need
to build and fly the model are listed below:
2 (two) GWS EDP 50 motors (note these come with 2 3x2 props included)
2 (two) GWS 3x3 propellers (GWS Part #EP3030)
1 (one) GWS 8 amp ESC (electronic speed control) model number ICS-100 or
ICS-100E (or equivalent, Castle Creations Pixie 7 ect.)
3 (three) GWS Pico Standard or Pico + servos (or equivalent, HiTec HS-50 or
HS-55s ect.)
1 (one) GWS 4 Channel Receiver, any of the R-4P models will work (or
equivalent, small and light weight are a must)
3 (three) pieces of .032 piano wire, 1 (one) 9 long and 2 (two) 3.5 long (these
lengths should be longer than actually needed, but will give you room for error)
3 (three) Dubro Mini E/Z Connectors (come in pack of 2 (two) part number 845)
1 (one) 2 (two) cell Lithium Polymer Battery Pack (around 1.4 oz in weight works
great, E-Tec 700 or Thunder Power 860s both work well)
If you do not have a Radio with servo mixing (for the ailerons) you will also need
a servo Y Harness.
Also some 14 gauge wire (to wire the motors to 1 plug in parallel) or a twin motor
wiring harness.
Additionally you will need the following common foam plane building tools and
supplies:
X-acto knife (with a good sharp blade), scissors, needle nose pliers (or z bend
pliers for making the ends of the control rods), fine tip Sharpie (or pen that you
can mark on foam with), packing tape (for hinges and to securely route wires),
sanding block with some 150 to 200 grit sand paper (for beveling the ailerons
and elevator) and some Foam Safe C/A or 5 minute epoxy (or whatever foam
safe glue you like to use on your foam projects).
LiL-Lightnin
A Wing Panels (left and right)
B Ailerons
C Twin Tail Bo oms
D Main Fuse/Canopy
E Battery Tray Sides
F Horizontal Stabilizer
G Elevator
Shown but not lettered are the (3) Control Horns, and the servo/canopy
templates.
Not shown but also included is this instruction manual.
Page 1
LiL-Lightnin Instructions Take the two template pages (one with the canopy and elevator servo cut outs
on it, the other with the aileron servo cut out on it) and cut out the black portions
of the templates (Photo I ). Once you have them cut out, take the templates and
lay them onto the Main Fuse/Cockpit (part D) and the Twin Tail Booms (part C)
line up the wing slot on both templates with the wing slot on the Main
Fuse/Canopy and the Twin Tail Booms (you will have to do this on both Twin Tail
Booms). Mark the servo cut outs and the canopy with a fine tip black sharpie
(Photo II shows the Twin Tail Booms ). Cut out the servo holes with your x-
acto knife and color in the canopy (Photo III ). ***NOTE*** your servos may be
bigger or smaller, adjust your cut size accordingly .
Photo I Photo II
Photo III
Page 2
LiL-Lightnin Instructions
Now its time to do some building. Take the pair of wings (Part A left and right,
they are pre-creased for the airfoil) and make some reference marks 3 from the
root on each panel. (photo IV) These will be the locations of the Twin Tail
Booms. Mark each aileron (part B) L and R for each wing panel and remove
them from the wings (they are attached with tape to each wing). Now take each
panel and bend them on the crease slightly until they match the wing cut out on
the main fuselage. You will probably have to over bend them just a little to get
them to stay the proper shape. Once you have them holding the proper shape,
glue them together (photo V). I use no dihedral on mine. If it makes you more
comfortable, block the tip of one wing up 1 for just a tad of dihedral.
Photo IV Photo V
Next its time to sand and attach the ailerons (part B) to the wings (part A), and
the elevator (part F) to the horizontal stabilizer (part G) (separate the elevator
from the horizontal stabilizer; it is also attached with tape).
Page 3
LiL-Lightnin Instructions Take the two ailerons and the elevator (photo VI). You need to sand a 45 degree bevel in the leading edge off both ailerons and the elevator. The angle should have its deepest part on the bottom (photo VII) Photo VI Photo VII
Once they are sanded, its time to hinge and attach them to the wings and horizontal stabilizer; this is where the packing tape comes in. Start with the elevator/horizontal stabilizer. Place the elevator into the cut out on the horizontal stabilizer with it at its down most position (the 45 degree angle against the trailing edge of the horizontal stabilizer cutout, with the top edge of both pieces even. Run a strip of packing tape along this seam and burnish it down. Photo VIII). Turn the horizontal stabilizer over and hold the elevator at its uppermost position and run a strip of packing tape along this seam starting from the elevator and burnishing the tape onto the 45 degree angle and the thin edge of the horizontal stabilizer. Then roll the tape down flat against the bottom of the horizontal stabilizer (photo IX shows the tape just before rolling it down flat) Photo VIII Photo XI
Page 4
LiL-Lightnin Instructions
Now attach the ailerons to the wings with the same technique. Once you have
the ailerons and the elevator hinged, set them off to the side (photo X ), its now
time to work on the Main Fuse/Canopy (part D). Take the Main Fuse/Canopy
and the Battery Tray sides (part E) (photo XI shows these parts).
Photo X Photo XI
Glue one of the Battery Tray halves onto each side of the Main Fuse/Canopy.
Keeping the top edge of each half even with the bottom battery tray cut out in the
fuse and starting with one end of the Battery tray half even with rear most edge
of the battery tray slot. (photo XII )
Photo XII
Page 5
LiL-Lightnin Instructions
Set the Main Fuse/Canopy with the Battery Tray halves glued in place off to the
side. Now we will attach the Twin Tail Booms (part C) to the assembled
wing/ailerons. Take the completed wing assembly and slide one Twin Tail Boom
over each wing tip. The Twin Tail Booms have the wing slot cut out to match the
shape of the wing. Be careful with the ailerons while pushing the wing through
the Twin Tail Booms. Slide the Tail Booms onto the wing until the inner edge of
them is even with the marks you drew 3 from the root of each wing panel. You
want 6 of space between the two tails once they are on the wing (photo XIII).
Before you glue the tails onto the wing, slide the elevator/horizontal stabilizer
onto the tails. There are slots in both tails and the horizontal stabilizer that join
these together. Make sure that everything is lined up and square, you may need
to move one or both of the tails in or out just a tad to line everything up right.
(photo XIV)
Photo XIII Photo XIV
Once you are satisfied with the alignment, glue the Twin Tail Booms to the wing
(making sure that they remain vertically true to the horizontal stabilizer). Then
glue the horizontal stabilizer to the Twin Tail Booms. Next up is installing the
control horns for the ailerons and the elevator.
Page 6
LiL-Lightnin Instructions
Take the plane and turn it upside down, on the ailerons make a mark from the
root end of the aileron on the hinged edge (photo XV ). Now looking at the
elevator from the rear of the plane make a mark 2-5/8 from the left side on the
hinged edge (photo XVI ).
Photo XV Photo XVI
Take your x-acto knife and make a small slit on these marks (photo XVII ). Insert
the control horns, make them straight and level. All the control horns go in from
the bottom. The holes in the control horn should face forward and be about even
with their respective hinges (photo XVIII ).
Photo XVII Photo XVIII
Page 7
LiL-Lightnin Instructions
Once you have all thee control horns installed you should have an airframe that
looks something like this (photo XIX ).
Photo XIX
Now you need to wire up the motors. I used some 14 gauge red/black wire to
join my two motors together. I cut the leads off, and wired them in parallel (red to
red, black to black) and then those wires are attached to one plug ***NOTE, THE
EDP5 0 MOTORS ARE WIRED AS PUSH ERS, YOU WILL NEED TO REVERSE
THE + AND WIRES AT THE S PEE D CONTROL*** (photo XX).
Photo XX
Page 8
LiL-Lightnin Instructions
Next is the motor and Main Fuse/Canopy installation. The motors are pushed
into the cutouts on the front of the Twin Tail Booms. Looking down from the top
both motors should be given just a tad of right thrust (I did not try to measure; I
just tweak the front of the motors slightly to the right, photo XXI shows the
angle). Once you have the motors in and adjusted for the slight right thrust,
simply glue them in place. Now take the Main Fuse/Canopy and slide it onto the
wings, route the motor wire through the slot and into the small wire cutout in the
Main Fuse/Canopy (photo XXII ).
Photo XXI Photo XXII
Move the wings all the way forward into the wing slot and center the Main
Fuse/Canopy on the wing joint. Holding the Main Fuse/Canopy horizontal to the
wings and keeping it centered on the wing joint, glue it in place (photo XXIII ).
Photo XXIII
Page 9
LiL-Lightnin Instructions
Now its time to install the electronics (the receiver, speed control, aileron and
elevator servos). First you need to hook up all the electronics (except the
motors) and make sure they are all functioning correctly and the servos are
centered. The servo horns for the ailerons and elevator are the single arm type.
The aileron servos go into the slots you cut in the Twin Tail Booms. Push them
in from the outside, or the wing tip side, also make sure the servo horn end of the
servo is towards the rear of the airplane (Ph otos XXIV ). Looking at the plane
from the bottom and the rear, the elevator servo goes in from the right side, again
making sure the servo horn end of the servo is toward the rear (photo XXV ).
Photo XXIV Photo XXV
Now you can mount the speed control and the receiver. Use two way sticky tape
(servo tape) and mount them under the wing on the side of the Main
Fuse/Canopy. It does not matter which side you put them on, do some trial and
error arrangement without the tape to see where they fit best for you with the rest
of the wiring. Photos XXVI and XXVII on the next page shows how I mounted
mine.
Page 10
LiL-Lightnin Instructions
Photo XXVI Photo XXVII
Almost done! Once everything is placed, use scotch tape to neatly route your
wires and then glue the servos in with just a dab of glue on each of the mounting
tabs. Finally, you install the control rods. I use a Dubro Mini E/Z Connector on
the servo end and a z-bend on the control horn end. Do whatever you are
comfortable with. However make sure that your control surfaces are flat and
even with the wings and horizontal stabilizer.
Well, thats it! Now all you need to do is double check your connections and
make sure that your servos move the proper way. Slap a 2 cell Li Poly in this
little sucker and take her for a test flight! I use a home built 2 cell pack that
weighs 1.3 oz. The E-tec 700 or ThunderPower 860s will work just fine (I am
sure there are others that will work just as well, these are just some examples). I
made the slot type battery tray so that you can use different size batteries in the
same plane.
The C/G for the LiL-Lightnin is just behind the crease in the wings where the
Twin Tail Booms are attached. Start of f with it a little nose heavy and then adjust
in small increments until you get it fine tuned to your liking. If you find a C/G that
works better for you, please pass it along and I will be happy to add it.
Thank you again for your purchase and please dont hesitate to contact me with
any questions or comments. I am always looking for input to make my products
better.
Glenn R. Viveiros [email protected]
Page 11
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