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Old Jun 17, 2012, 07:32 PM
SeamusG is offline
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United States, CO, Arvada
Joined Sep 2007
191 Posts
Depends. Some ARFs use a single aileron approach. Some kits (like the SIG LT-40) instructions have you mount a single servo in the middle of the wing's bottom. But, many build the LT-40 kit with dual ailerons (like me). Most sport & aerobatic planes use dual aileron servos. Bi-planes can use from 1 to 4 aileron servos. Tri-planes? Gotta defer to Someone that has built one.

If it's a single aileron servo configuration, then yes.

If it's a dual aileron servo configuration then there is servo mounted in each wing panel just behind the wing's main spar about in the middle of the aileron length.

On wiring.

The single aileron servo lead is plugged into the Rx's aileron channel. Usually you want to use a short extension (3" to 6") that is "permanently" plugged into the Rx. And then, when you mount/remove the wing at the field, you just plug/unplug the servo lead to/from the easily accessible extension.

The double (dual) servo approach can be wired in one of two ways.

You can wire both servos into a single channel on the Rx by using a "Y" extension. The "Y" can either be connected to the wing servo wires "permanently" and then just plug the "Y" connector to the Rx (or Rx extension) when the wing is installed. Or, the "Y" can be installed into the Rx and then plug each servo into one of the "Y" connectors. If you do this LABEL the wires - LEFT & RIGHT.

Or you can plug each aileron servo into its own channel in the Rx. Usually the right wing's aileron servo gets plugged into the AILE channel on the Rx and the left wing's aileron servo gets plugged into an AUX(iliary) channel. Then you use your radio's (TX) mixing capabilities to mix the left and right aileron servos.

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