Hi Oliver,

I've taken the measurements you requested. These measurements are from the old servos that are burnt out. I'm not sure if this would work since I cannot bring them to the neutral position unless I take out the servo and reposition the arm. I can do that as well if you wish. Hopefully this will work, if not I can go with changing them around.

Flap Length: 460mm
Flap Average Chord: 100mm
Control Horn Length from rotation axis of control to link: 25mm
Mid Deflection in Degrees: 42.5 degrees
Distance from servo rotation axis to flap rotation axis: 106mm
Distance from servo rotation to wing chord: 11mm

I will have to purchase some control arms of longer length for the Hitec servos. Dont have any arms at the moment!

I'll play with this freeware you've provided but after looking at your figures you provided your pretty close. Hope that the measurement for the "Distance from the servo rotation to wing chord" is correct. I'm assuming this is the measurement from the clevis to the hole on the flap control horn.

Look forward to your reply

Regards,

Orlando