1:4 3/4 Piper J-3 Cub GP/EP Gas ARF Manual
PIPER J3 CUB
Instruction Manual
INSTALLING THE AILERONs AND FLAPs
LINKAGES
1. Working with the aileron linkage for now, thread one
nylon clevis at least 14 turns onto one of the
threaded wires.
2. Attach the clevis to the outer hole in the control horn.
3. Locate one nylon servo arm, and using wire cutters,
remove all but one of the arms. Using a 2mm drill
bit, enlarge the third hole out from the center of the
arm to accommodate the aileron pushrod wire.
4. Plug the aileron servo into the receiver and center
the servo. Install the servo arm onto the servo. The
servo arm should be perpendicular to the servo and
point toward the middle of the wing.
5. Center the aileron and hold it in place using a couple
of pieces of masking tape.
6. With the aileron and aileron servo centered,
carefully place a mark on the aileron pushrod wire
where it crosses the hole in the servo arm.
7. Using pliers, carefully make a 90 degree bend
down at the mark made. Cut off the excess wire,
leaving about 6mm beyond the bend.
8. Insert the 90 degree bend down through the hole in
the servo arm. Install one nylon snap keeper over
the wire to secure it to the arm. Install the servo
arm retaining screw and remove the masking tape
from the aileron.
9. Repeat step # 4 - # 8 to install the second aileron
linkage. After both linkages are completed,
connect both of the aileron servo leads using a
Y-harness you have purchased separately.
Must be purchased separately!
Set all scerws securely. If they come
off during flight you will lose control
of your aircraft!
Tie the string.
Pull out servo cord with string.
2 x 10mm TP Screw
Warning!
7
2x10mm
Aileron ServoAileron Servo
< Left Wing >< Right Wing >
Flap ServoFlap Servo
Assemble left and right
sides the same way
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