Hangar 9 Piper J-3 Cub 40 ARF - Manual (Page 31)

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 Step 1
Completely read the instructions included with your
engine and follow the recommended break-in procedure.
 Step 2
At the field, adjust the engine to a slightly rich setting at
full throttle and adjust the idle and low-speed needle so
that a consistent idle is achieved.
 Step 3
Before you fly, be sure that your engine idles reliably,
transitions and runs at all throttle settings. Only
when this is achieved should any plane be considered
ready for flight.
The amount of control throw should be adjusted as closely
as possible using mechanical means, rather than making
large changes electronically at the radio. By moving
the position of the clevis at the control horn toward the
outermost hole, you will decrease the amount of control
throw of the control surface. Moving it toward the control
surface will increase the amount of throw. Moving the
pushrod wire at the servo arm will have the opposite
effect: Moving it closer to center will decrease throw,
and away from center will increase throw. Work with a
combination of the two to achieve the closest or exact
control throws listed.
Elevator
Low Rate
11/16" (11.5º) Up 9/16" (10º) Down
High Rate
1 1 /
4
" (19.5º) Up 1" (18º) Down
Linear measurement (Inches) measured at
widest part of elevator (roughly in the center).
Note: Use the Low Rate for most flying. The
High Rate is used specifically for performing
spin maneuvers.
Aileron
Low Rate
3/8" (8º) Up 1/2" (9º) Down
High Rate
7/8" (21º) Up 1 1 /
16
" (22º) Down
Linear measurement (inches) measured at root.
Rudder
1 1 /
2
" (28º) Left 1 1 /
2
" (28º) Right
Linear measurement (inches) measured at front
of counterbalance.
Adjusting the Engine
Control Throws