Differential Flaperon Angles

[Alaska Flyer]

Can anyone tell me what the maximum angles, up and down, are for the differential flaperons when using zero flaps? Thanks, JIM

[t j]

For all the model 4s by the book it is 25 degrees up and 12.5 degrees down.

I found it in the Model 4 Pilot's Operating handbook. I checked my flaperons with an angle finder and got within 1 degree of those numbers both up and down so was pretty satisfied.