I am a beginner, I'm re-covering a trainer I bought used per RCKen's method of covering (Barbie if you're keeping track). I reinstalled CA hinges per advice on these forums, all good, and the ailerons were moving well and freely before covering. Post-sealing the hinges with Ultracote, the hinges are moving freely, and I took care not to "bind" them either direction by not allowing the the covering to limit their movement, but they are definately stiffer than they were without sealing with coating. I can move the ailerons up and down fairly easily using the pushrod from the one aileron servo, but I just wondered how much the servos might be hindered by the extra resistance. Are servos fairly strong in terms of leverage? Keep in mind this a a trainer, by no means a 3-D plane.

Keep in mind that we can't truely evaluate your work without being there. Best would be to take it to a club field and have it evaluated there or at a plane oriebtated LHS.

OK, now that that has been said. Average sport servos such as the Futaba S3001's or S3004's or their JR or Airtronics etc equivilent will/should have plenty of power for the task.

Ken and I differ on the need for sealing hinge gaps on trainers. It doesn't hurt but I'm just not convinced of the need as long as the gap is kept tight.

OK point in fact: When I bought this trainer, the ailerons were all missaligned, big gaps, and the seller who is now flying 3D with gas engines told me it flies fine just as is as a trainer. In other words, it seems sloppy hinges, big gaps, and misaligned control surfaces are shall I say "well-fogiven" on a trainer. As an old U-Control modeler who was out of the hobby for 20 years, I tend to be a perfectionist as a modeler. This is my 4th recover/re-outfit of old used sloppy trainers, which I do in my winter spare time. I am yet to solo with any of my trainers, but my refurbished ones LOOK damn fine. So this time around, I sealed the hinges per RCKen, and they just seem somewhat stiff. Nice and tight though. This latest one is an older PT-40 trainer with a massive dihedral. I think I might like to learn on this one this Spring, since it might be the most forgiving, among my newer Hobbico Superstar Select, the old Thunder Tiger Skylark, and now the old Great Planes PT-40 with the elevators through the rudder.