RE: Is this natural for the top of the piston (55ax)
Great. The engine on the Reactor was quitting randomly at 50-60% throttle at about 50-60% tank. I blow tested the tubing both inside and outside the tank under water as everyone suggested. Even though there were no leakages, I replaced the tubing anyway. I already tested the idle at home. Cant do any more testing in a appartment. Remaining testing on the field. I will also set myself the target of setting the HSN myself (so far I always got others to do it for me).That way I am more in control of what I am doing. Hope after doing all that research, I will have an engine that doesnt quit randomly.
Next target is to mix my own fuel- will do that before the weekend, so that will be another thing I learn. Setting up the airplane with all the control rods and engine I will learn with my next ARF
Ameyam