Used the 1" x 20" aileron example at 70 mph in the calculator the result was 16.3 ounces. My guess factor was 20 ounces
Also tried 1.25" x 24" at 70 mph the calculator result was 31.3, my guess factor was a 30 ounces.
So 1 ounce of torque per square inch of control surface is in the ball park for any plane not exceeding 70 mph.
I think one part of the calculator has a bad value. The default servo deflection from center is set at 45 degrees. When I plug in 1.25" x
24" at 70 mph. 45 degree control surface deflection and 45 degree servo deflection the result is 18.09 ounces.But unless I am mistaken a JR servo only travels 60 degrees stop to stop. So thats 30 degrees deflection from center. Change the servo deflection to 30 degrees and the torque required jumps to 31.3 ounces.