Well I posted over in the glow engine forum about this engine which in a nut shell, I never got it to run because the stock carb was crap. I'm still tuning on it right now so I haven't put a tach on it. I went with a 17X6 and it seems to turn up really nice. I'm going to do a search to find out if a gas conversion runs hotter than glow. It seems really hot after a bench run. Also I'm getting radio interference at 1/4 throttle even with a spektrum RX. Just a few things I need to work on before I put it in the air.