Paul Visk wrote: >>The point I was trying to make was. What's wrong with using wood screws on >>the aileron hinges? Just curious. I think it has been proven that they work >>on belly boards going 130 mph and they don't fall off. One think I can think >>of. The plans call for Nut plates and getting it past the DAR might be an >>issue. Being the ailerons are a primary flight control and the speed brake is >>not.<<
I think you answered your own question...primary flight controls. Also, the flap installation has the screws primarily in shear, but the ailerons are also in tension, although the loads are far less...unless you flutter them! And screws in wood and in tension can be pulled through. That's a lot more difficult with nuts or nutplates on the other side. You knew that already though. Indeed, "primary flight controls" is the reason you don't want to leave anything to chance. Mark Langford, Harvest, AL ML "at" N56ML.com www.N56ML.com