I honestly have no clue what RPM these things spin at. I'm not getting inside the motor at all at this point, and I don't plan on yanking the gov override often, maybe to help with a pass here or there. What kind of RPM do you think these guys run at governed, and do you know how much higher they may go when the gov is overrode? I really don't want to blow her up. This winter I might be able to get inside and see what I can do to up my redline safely, but for today the goal is to finish the race. Can't win if you don't survive to the finish, and this course will certainly eat a few mowers.
I should also mention that this mower is unlikely to ever join sanctioned races. These are informal races put together by friends, so the rule book is only a dozen lines long. No pulley changes, until we have a modified class no piston/crank/cam changes, fire extinguisher, DOT helmet, and whoever picks up the most trash on the trail (this is in an OHV area of the desert) wins a bottle of whiskey. Not much more rules than that. As with all forms of racing, the rules define the lines not to cross, and the racers walk as close to that line as they can get away with. We are all friends, so I don't think we'll have any cheats.