Sorry about that. I'm running 25% nitro. Same stuff I use on my Norvel airplane motors, and they run great with it. The first thing I did when I got it was to remove the motor from the heli and I put on an airplane thrust plate and ran a prop on it to make sure it was good. It turned a 5 1/2 x 3 over 20K, it was plenty strong. I'll try adding a couple more washers and see if that helps. The rotor RPM's seem to be pretty high, I'll try to get the tach on it next week.

Is anyone running the new 10x5 rotor blades? I'm hoping that will help things also.

Thanks for the ideas. I'll see if this helps or if I need to move up to the Vmax7.....