[hawkman]

I dont know the helicopter you have...and I dont know what radio you have either.

It could be down to overloading the motor...maybe there is too high a pitch for a given demand on the motor.

My experience is that motors like to run nice and fast with not too much of a load.

Is there a choice of pinion gears? ie did you get a 'spare' small brass looking gear?

Whats the tail drive like...is it belt driven or wire shaft driven...either one can be too tight...a belt doesnt need to be tight...you want to be able to squeeze the belt together (where you can see it within the frames) but not with force...just squeeze it and see where it resists...about half the way across is about right if you get my drift.

Gear driven tail shaft drives? they need a little bit of slack on the gear mesh...too tight will overload the system for sure.

Make sure the motor can 'breath' it needs cooling air.

Other than that, its a budget heli? well they can suffer from problems like you have...but try out the points I have mentioned.

Rob