Great Planes Ultra Sport 40 Kit - GPMA0410 - Manual (Page 36)

12. Mount the horns with 2-56 screws and the nylon
nutplates which were attached to the horns.
2 - 5 6 x 5 / 8 " S C R E W
13. Screw a nylon clevis onto the threaded end of
each long steel wire pushrod. NOTE: Screw them on
all the way until the threads are protruding inside the
clevis.
NYLON CLEVIS
14. 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.
SPACER
We recommend the following CONTROL
SURFACE THROWS:
NOTE: Throws are measured at the widest
part of the elevator and rudder.
ELEVATOR:
(High Rate)
(Low Rate)
RUDDER:
(High Rate)
(Low Rate)
AILERONS:
(High Rate)
(Low Rate)
5/8" up. 1/2" down
3/8" up, 5/16" down
1-3/8" right, 1-3/8"left
7/8" right. 7/8" left
1/4"+ up, 1/4" down
1/8"+ up, 1/8" down
NOTE: If your radio does not have "dual
rates", then set up the control surfaces to move at
the high rate throws.
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.
15. Insert the pushrod wires into the pushrod guide
tubes (previously installed) and attach the clevises to the
elevator and rudder horns.
19. Securely anchor the pushrod guide tubes to F-4
using cross-braces cut from scrap 1/8" balsa.
20. Attach the throttle pushrod (and nose gear steer-
ing pushrod) to the throttle and rudder servo arms.
NOTE: We recommend using DuBro "E-Z connec-
tors" (or similar) for these hookups, for ease of installa-
tion and adjustment
21. If you are using retracts, install your retract servo
at this time.
16. While holding the rudder and elevators in the
neutral position, mark where the pushrod wires cross the
holes in the servo wheels where each pushrod will be
attached.
21. Hook up your radio system and test the operation
of all controls.
17. Remove the elevator and rudder pushrods and
make "Z-bends" at the marks you justmade. Cutoffthe
excess pushrod wire.
FINISHING
18. 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.
ADDITIONAL FUELPROOFING
If you have not already done so, make sure the
entire engine compartment is completely fuelproof.
Also fuelproof any wood that will not be covered and
which may be exposed to glow fuel residue, such as the
landing gear block slots and the wing saddle. Use epoxy
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