GREAT PLANES Super Decathlon 40, Instruction Book

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D 23. Securely anchor the pushrod guide tubes to F-4
using cross-braces cut from scrap 1/8" balsa.
NOTE: The THROTTLE PUSHROD location will
vary, depending on the engine used. Plan your
installation carefully!
D 15. Insert the plastic pushrod tubes through the holes
you just cut and through formers F-7T, F-6T, F-5 and F-4.
D 16. Temporarily insert the 36" pushrod wires into the
tubes and hold them in the correct position at the servo end.
Keep the tubes as straight as possible. Glue the tubes to the
fuse sides at the rear exit points using thin CA glue. Glue the
tubes to F-7T and F-6T. Use scraps of 1/8" balsa to anchor the
tubes to F-5. Do not anchor the tubes to F-4 at this time to
allow for slight adjustment of their positions later.
D 17. Cut off the tubes at the exit points and sand them
flush with the fuse sides using a sanding block.
D 18. Cut the short length of 1/8" diameter plastic tube into
several pieces, approximately 1/4" long. Slide at least six of
these pieces onto each of the long pushrod wires and space
them approximately 2-1/2" apart (do not glue yet). NOTE:
If these tubes do not slide on easily, cut them to a shorter
length.
NOTE: While installing the pushrods, position the
above plastic tube spacers so they always stay inside the
pushrod guide tubes. If the tubes are not a tight friction
fit on the pushrod wires, apply a drop of thin CA to secure
them.
D 19. Insert the pushrod wires into the pushrod guide
tubes (previously installed) and attach the clevises to the
elevator and rudder horns.
D 20. While holding the rudder and elevators in the neu-
tral position, mark where the pushrod wires cross the holes in
the servo wheels where each pushrod will be attached.
D 21. Remove the elevator and rudder pushrods and make
"Z-bends" at the marks you just made. Cut off the excess
pushrod wire.
D 22. Unscrew the nylon clevises, re-insert the pushrods,
and replace the clevises. Remove the servo wheels and work
the Z-bends into the holes (drill out the holes in the servo
wheels to 5/64" if necessary). Finally, place the servo wheels
back onto the servos and check the operation of the elevator
and rudder.
D 24. With the engine attached to the mount, plan the
throttle pushrod routing. The pushrod should be located as
close as possible to the fuse side (to allow room for the fuel
tank), and the guide tube should not have any tight bends.
Drill a 3/16" hole in F-l for the throttle pushrod guide tube.
D 25. Drill or carve holes in F-2 and F-3 (if necessary) for
the guide tubes, and trial fit.
D 26. Sand the plastic pushrod guide tube with 100-grit
sandpaper, then glue it in place.
D 27. Cut the 36" threaded pushrod wire to the required
length and temporarily install the throttle pushrod. Bend the
pushrod wire as necessary to avoid binding against the
muffler.
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