Originally Posted by
CafeenMan
Interesting. I've never had a problem with an OS engine run per the instructions. Their instructions are always very conservative and won't give you nearly the output the engine is capable of.
Of course it is quite possible the engine didn't last more than 12 flights due to user error and it was a 1.20 4-stroke, but still... I take what the manual says with a grain of salt. The manuals are rarely written by the actual people that designed the engine. I don't want this to end up being a thread hijack, so I'll leave it with this - this is the thread I am referring to:
http://www.rcuniverse.com/forum/ques...-destryed.html
On average, my old design 4-strokes only gained about 200rpm going from 5% nitro to 10% nitro.