st40
03-11-2003 | 03:32 PM
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st40
What % nitro should I run this engine on. It is my first ringed engine and I'm wondering if it requires different fuels than my abc's. I run my other engines on coolpower 15% nitro. I live in new mexico, elev 5000' (if that matters). Thanks!
Tommy
Tommy
03-11-2003 | 04:50 PM
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From: St Louis,
MO
st40
We run 4*40 races and the only engine allowed is a ST 40 with a stock muffler and 10x6 MAS prop and all run 15% Cool Power. You should get between 14,000 and 15,000 rpm. If engine is new run 2 tanks (6 oz/tank) sloopy rich then let her rip. Keep fuel tank outlet on same level as carb inlet for best performance.
