Cut two 6” pieces of 1mm carbon and glue in place from
the wing leading edge to the forward fuselage. These will
help keep the wing aligned with the fuselage.
Motor and Radio Installation:
Glue the plywood firewall to the nose and install the
motor.
Plug all servos and speed control into the receiver. Attach
a battery and check for proper servo rotation and
centering.
The aileron servo is installed in the top of the wing. The
3Decathlon is a high wing and susceptible to adverse yaw.
To correct this the ailerons will need to have more up
movement than down. The offset control horn is used for
this by moving the pushrod connection behind the servo
pivot.
The rudder servo is installed on the left side in the
horizontal fuselage. The elevator servo is installed on the
right side in the horizontal fuselage. Use a couple of spots
of hot glue on each servo tab to hold it in place. Mount all
servos in the same manner. It may be necessary to make
the servo mounting cutouts larger, we have left them a
little small to fit a good range of servos. Connect the
receiver, speed control and servos.
The Speed control, receiver and excess servo wire can be
tucked away below the forward horizontal fuselage.
Push Rod Installation:
Cut slots for the control horns and glue in place. All
pushrods are made as shown. Use the .032 wire to make
the Z ends. Install the Z ends to the control horns and
servo arms. Test fit each carbon rod and trim as needed.
Add a small drop of CA to the wire/carbon joint. The
1/16” heat shrink is used to secure the 1mm carbon
pushrod to the .032 wire.
Make sure the control
surface and the servo are centered before heating
the shrink sleeve.
Any adjustments past this point must
be made with the sub-trim function of your computer
radio.
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