ORIGINAL: rcpattern

Ziomarco,

I have been running the OS 1.20AX I have for over 2 1/2 years now on 30% heli fuel with no issues. There are multiple advantages to 30% nitro, the biggest of which is the fact the engine runs cooler. This is very beneficial in a cowled scenario. Also, the added oil content is better long term for the engine. What I would not recommend is over propping the engine trying to gain more performance that way, but picking up a few hundred RPM is no different than running a pipe. You wont have any problems running 30% fuel in any of today's glow motors as long as you stick with the recommended prop sizes.

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