Programming the JR XP8103 Radio For an Electric-Powered, Six-Servo Sailplane
has an electric motor, you need the throttle stick to control it, so the JR recommended
programming method described in the manual doesn't work.
One possible solution is offered in the
Ultra Stick .60 Instruction Manual
. The Ultra Stick is not
a sailplane, but if you scan down to pages 62 through 67 of the manual you'll see a method
described that could be applied to one. However, this method has some drawbacks:
●
Reflex is not available.
●
Crow is not variable. It's activated by pulling the flap mixing switch down to what was
meant to be the "launch" position, so crow is either on or off.
●
The intended functions of the flap mixing switch are changed:
❍
The up position, which was meant to be reflex, becomes flaps off.
❍
The center position, which was meant to be flaps off, becomes flaps down.
❍
The down position, which was meant to be flaps down, becomes crow.
●
Since the flap to aileron mixing function is used to achieve this somewhat artificial
version of crow, with ailerons moving in the opposite direction as flaps, flap to aileron
mixing can't be used as intended, with flaps and ailerons moving in the same direction.
The following is a programming method that solves these problems. With this method:
●
The flap mixing switch will operate as intended.
●
All mixing functions will be available for normal use.
●
Crow will be variable using the throttle stick.
●
Motor control will also be available using the throttle stick.
●
With the flip of a switch, the motor can be safely disabled for range checks and other
operations where it would be undesirable for the motor to accidently start.
How it Works
The CROW switch will select the function of the throttle stick. With the CROW switch down
(back and away from you) the throttle stick will operate the motor. With the CROW switch up
(toward you) the motor will be disabled and the throttle stick will operate the variable crow
function. It's assumed that you would never use crow and the motor at the same time.
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