Hangar 9 J-3 Piper Cub Assembly Manual page 32

Section 12: Installing The Linkages
16. Saturate the balsa with thick CA glue where the threaded
rods contact the balsa pushrod.
17. Slide a piece of heat shrink tubing over the end of the
balsa dowel and shrink it in place as shown using a heat
gun.
18. Locate one of the unthreaded rods and insert the 90°
angle into the opposite end of the balsa dowel. Using
thick CA, adhere the rod to the balsa dowel and heat
shrink it in place.
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19. Repeat this process to complete the other pushrod. Note
that only one threaded rod is necessary.
20. Carefully cut away the covering at the tail of the fuselage
where the pushrods exit. Note there are two cut-outs on
the left side (top cut-out for elevator, bottom cut-out for
rudder) and one cut-out on the right side (elevator).
21. Spread the two threaded pushrods apart about 2". Insert
the elevator pushrod into the fuselage so that each
threaded rod comes out the elevator pushrod exit. Thread
a clevis onto each of the threaded rods 16 turns. Attach
the clevis to the second outer-most holes in the elevator
control horns.
Note: As extra insurance, it is a good idea to place a piece of
fuel tubing over the clevis to prevent the clevis from accidentally
coming open.
CONTINUED