I have never flown a sailplane with flaps before and I am now building a Multiplex Cularis.
I have just check the servo arms for the ailerons to make sure that the arm is 90° to the servo when the stick is in neutral position.

But what about the flaps ?
The flaps will be operated via a slider
Sould the servo arms for the flaps make a right angle to the servo :
- when the slider is at the bottom position ?
- when the slider is at the center position ?
- or ????


Thanks for your help

Eric