Sometimes ailerons, flaps, rudder, etc, are described by their travel distance in inches/centimeters rather than the degrees they move. Planemaker (as of 9.31) asks you for the degrees of the control throws. I found a link to a handy webpage that gives you an MS Excel spreadsheet to fill out and it does the math for you, converting inches to degrees. Hope some of you can find this link useful. http://www.aeroperfect.com/degree.html