Great Planes Piper J-3 Cub 40 Kit - GPMA0160 - Manual (Page 18)

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17. Cut eight pieces of the Inner Pushrod Tube (PLTB004)
approximately 1/4" long to make the pushrod wire spacers.
Slide four spacers on each of the 24" long pushrod wires.
Space them out on the wire as shown on the wing plan. Add a
very small drop of thin CA to each spacer to hold it in place.
Thread each 24" long pushrod wire completely into the Nylon
Double Ended Ball Link (NYLON55). Now back each wire
out three full turns.
(Wing is right side up in photo.)
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18. Slide the aileron pushrod assembly into the wing
and snap the double ended ball link onto the metal ball.
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19. With the servo arm in its neutral position, adjust each
bellcrank so it is oriented as shown on the plans. Mark where
each pushrod crosses the outer hole in each bellcrank. Be
careful to not move the servo arm while marking the wires. Cut
off each pushrod wire 5/16" outside the marks you just made.
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20. Cut the 36" long Outer Pushrod Tube (PLTB011) into
two 18" long pieces. Scuff up the outer surface of each
pushrod tube with 150 grit sandpaper so the glue will
adhere better. Slide the 18" long outer pushrod tubes over
each aileron pushrod wire.
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21. Unsnap the nylon double ended ball link and slide the
pushrod assembly part way out of one wing panel. Bend that
pushrod wire 90 degrees at the mark you made earlier. Try to
keep the double ended ball link oriented properly during this
bending process so you won’t have to twist the wires later to
get them into the bellcranks. Slide the pushrod assembly out
the other wing panel and bend that wire 90 degrees also.
Reposition the pushrod assembly in the wing and snap the
double ended ball link onto the servo. Insert each bent
portion of the wire into the two bellcranks and secure them
with a nylon Snap Keeper (NYLON91) as shown in the
photo. Remove the aileron servo from the wing for now.
NOTE: In the next steps, maintain straightness
by keeping each wing panel down against a
flat surface while it is being sheeted.
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1. Use your T-bar or other good flat sanding block to
lightly sand the top edges of the ribs to smoothly blend
them to the forward spar. Also remove any glue bumps or
other irregularities along the leading and trailing edges.
Install LE and TE Sheeting
18