There was a Southern BC flyer that had his air retracts converted to electric by Down and Locked . Worked fine on the bench but failed to extended prior to landing I think it was due to the flying pressures and one or more of the gear failed to extend; may have been the nose gear. Result was some lost paint on the foreword section. Cause was the drive motors did not have enough power to extend which was changed by Down and Locked and then everything worked fine. This Could be the issue with the cheaper retracts . May work for a few times and then quit at a bad time with either the control board or drive system not being able to take the stresses. Lots of testing before marketing costs money but is a necessity for a successful product.
I have come to the conclusion I prefer the external control box with the drive system being just the motor and gearing system.
Last edited by stegl; 04-25-2015 at 07:29 AM.