Great Planes Piper J-3 Cub 60 Kit - GPMA0162 - Manual (Page 47)

D 10. Mark and cut the pushrods to length and install the
connectors. Connect the pushrods to the servos and hook
up the throttle linkage. (Not included)
D 11. Mount the aileron servos to the hatches for each
wing panel. Connect the servos to the extension cords and
"Y" connector previously installed in the wing before
covering (if you accidentally forgot to route the servo
extensions through the wing before covering it, don't worry
- you can "play doctor" and route a thin length of wire into
the servo compartment, through the ribs, and out the hole
you made in the bottom of the wing center section sheet).
D 12. Place the wing next to the fuselage and connect the
aileron extension to the receiver. Turn on the radio and
center the aileron servos. Hook up your previously made
aileron pushrods.
D 13. Refer to the Control Throws section that follows
while setting the throws to make sure the servo horns do
not interfere with the plywood hatch. Enlarge the clearance
hole if necessary.
D 14. Glue the 1" x 1/2" x 1/2" basswood servo hatch
block (saved from the excess 1/2" x 1/2" main spar) to the
rear of former F2 flush with the base of the notch.
We recommend the following Control Surface Throws:
NOTE: Throws are measured at the widest part of the
elevator and rudder. Make sure the control surfaces move
in the proper direction as illustrated below.
ELEVATOR MOVES UP
RIGHT AILERON MOVES UP
LEFT AILERON MOVES DOWN
RUDDER MOVES RIGHT
CARBURETOR WIDE OPEN
4-CHANNEL RADIO SET-UP
(STANDARD MODE 2)
ELEVATOR:
RUDDER:
*AILERONS:
(See Below)
High Rates
1-1/8"up
1-1/8" down
1-3/4" right
1-3/4" left
1 up"
7/8" down
Low Rates
3/4" up
3/4" down
1-1/4" right
1-1/4" left
9/16" up
1/2" down
D 15. Drill a 3/32" hole through the tab in the die-cut
plywood receiver hatch cover and a 1/16" hole through
the hatch block for the #2 x 3/8" sheet metal screw. Add a
piece of foam between the receiver and the hatch cover,
then secure the hatch.
These control surface "throws" are approximate and
provide a good starting point for the first flights with your
Cub 60. You may wish to change the throws slightly to
provide the smoothness or quickness that you prefer.
*Differential Throw: Ailerons that are set up to deflect
more in the upward direction than downward are said to
have "Differential Throw." The purpose is to counteract
"Adverse Yaw."
*Adverse yaw: The tendency of an airplane to yaw in the
opposite direction of the roll. For instance, when right
aileron is applied, the airplane yaws to the left, thus
opposing the turn. Adverse yaw is common in high wing, flat
bottom airplanes, and is most noticeable at slow speeds
and high angles of attack, such as during takeoffs and when
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