A look at my Ys56sr heli motor out of my Thunder Tiger Titan x50B kit. after 2 years of running i heard a noise from what i believed to be the motor and dissembled it to investigate. this is what i found! p.s it was the rear bearing in case you were wondering what the noise was. I don't relate it wearing out to fuel, just 3d flying and well they wear out. had to change them 3 times in my o.s 50 hyper, over a 3 year span.
