Carl Goldberg GBGA1088 - Manual (Page 28)

28
Elevator Pushrod
1. Collect the following items
(1) 8mm x 17” wooden dowel
(2) 1/2” shrink tubing
(2) 2-56 x 7-1/2” pushrods threaded one end
(1) 2-56x 6” pushrod threaded one end
(3) 2-56 golden clevis
(3) 2-56 nuts
(3) clevis keepers
3. Take the 8mm dowel and drill a .073 (5/64”)
hole one inch from the end. Cut a slot from
the hole to the end of the dowel using a knife
or dremel tool. The slot should be the size of
the wire. Do this on both sides of the dowel.
Insert the end of the pushrod wire you bent
into the hole, one on each side. Use CA glue
to make sure they are firmly held.
2. Take the two 2-56 x 7-1/2” pushrods and
make a 90 degree bend on the unthreaded
end. Make the bend about 1/2” long so you
can get a good grip with the pliers. Then cut
the end off at 1/8”.
4. Take the shrink tubing and slide over the end
of the dowel and wires. Let the tubing extend
past the end of the dowel about 1/4”. Use a
heat gun to shrink tight. If you don’t have a
heat gun a match or lighter will work just be
careful with the open flame.
5. Lay the pushrod on the bottom of the fuse
lage and spread the two pushrods apart the
distance of the control horns on the elevators.
Don’t make sharp bends, let the pushrods
bow out to the horns. This will give you a tight
pushrod set up with no flex.
6. Put the pushrod in the fuselage fishing the
rods out the slot on each side. Install the
clevis and hook up the clevis to the control
horn. Use masking tape to hold the elevators
in neutral while you mark the other end.
Mark here