ORIGINAL: kofi1013
I have advanced to the point where I can build a model and fly a low wing sport plane. I generally don't like to build planes but, I do like to purchase an airframe and retrofit that plane with my own servos, engine, rx, etc. My problem is when I retrofit a plane, the last two maiden flights have gone badly. On take-off the plane will liftt off smoothly and then the wing will dip where it is perpetdicular to the runway. I adjust the throws according to manual. When I have my TX for 25% expo I am able to correct. When my settings were expo at 50% the plane was unable to recover and crashed. This has happened twice. What are some of the causes. Any help would be appreciated. Is this possibly due to lack of airspeed? Please help!!!
Either your ailerons aren't adjusted correctly and your plane isn't balanced latterly. Or most likely, both.
Of course you didn't mention what plane your talking about, but I have to ask. If your flying a low wing sport plane and have advanced that far, shouldn't you already know whats wrong?