Accurately Measure Aileron Deflection

The photos show how I measure aileron deflection on ALL of my planes. I simply use drill bits as "GO-NO-GO" gauges. To much deflection and the drill bit goes under the aileron. Too little and it can not go under the aileron. The aileron will just BARELY touch the drill bit at the proper deflection. Do both the up and down aileron deflections using separate drill bits for aileron differential (more UP than DOWN). Do both left and right ailerons using the same drill bits then, if using a programmable radio, write down the percentage numbers from your Tx. It will then be easy to go back to these percentage numbers if you need to make tiny adjustments at the field.

Extremely accurate, easy to do and helps keep both ailerons in proper deflection.

Ray DiNoble