ORIGINAL: Boomerang1
What Sandormeans is use as much of the available servo travel as you can & vary the horn length & hole position on the servo to get close to the needed flap movement.
It's the same as short or long servo arms, it's easier to stall a servo if it has long arms on it so keep them short.
Likewise it's easier to move a control surface with longer horns on them so keep them long.
By increasing the servo travel you can make the servo arms shorter & the flap horns longer. - John.
sorry for the confusion , yes this is what i ment.
always try to use full travel , otherwise why have a great TX and digital servo,s if you use only half the travel.
i indeed use most of the time the most inner hole for the flaps..