For you LMH fliers with tachs out there, what max head speed are you able to achieve? I run the Vmax6 on 30% and get about 2000-2050 wide open on the ground with a pair of 6 pitch grips. I measure this by sliding a 2X4 under the skids and opening the throttle up. My short lived stint with the Big Mig 0.61 yielded 2200-2300rpm, for a couple of flights. Performance was defiantly better, but the engine ended up throwing a rod.

I am especially interested to see what RPM’s the electric guys and the Vmax7 are turning. I know the manual lists a max 2000rpm safe head speed, but it seems to me that 2000 rpm at the motors top end yields just barely passable performance. I have had no trouble up to 2300. How high have you spun things up?

Spiro