About three years ago i remember setting up a GP Spirit 2m sailplane for a friend. He wanted it modded so that he could utilize the throttle control of his remote (a standard JR 4channel Tx) to control the optional spoilers that were available on the plane. So I spliced leads (copper wire and shrink tubing with connectors that i cut from fried servos) and made a harness for the servos. I connected the harness to throttle output and he was able to control the spoilers (up and down) using the throttle (mode 2 Tx: left stick forward and back). My question comes now: I want to do something similar with a project idea. I want to build a GP Spirit Elite and i want to use the stuff i have (6 micro servos, a spare 7 channel receiver, and my current 4 channel Tx). I could set the sailplane up regularly with ailerons, rudder, and elevator, but I want to know if a Y-harness will do the same job to have the flaps controlled by the throttle channel.

Basically, i use Y-harnesses for aileron functions (because the servo action is inversely related) but if I were to connect the two flap servos (one in each wing) and connect the Y-harness into the throttle channel in the receiver, would the servo action be the same? (would the flaps move up and down together instead of opposites like ailerons?)

I know this is confusing, please post for clarification. I appreciate all responses. It would open up a new world for me if Y-harnesses could be used for this function.

Thanks in advance

Trent