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HelicopterEngines Plugs Mufflers Fuel › O.S. Hyper 50 one shim or two?
09-06-2009 08:46 PM  8 years agoPost 1
TRACERBOB

rrVeteran

Closer than you think

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Installed in a Raptor 50, burning 30% Coolpower. It's been running on the hot side these past 2 weekends. Florida's hot and humid this time of year. I've got an extra .008 shim I was thinking adding to the engine to lower the compression to see if this would cool it down some. What do you think?

Life is hard. Harder when your stupid

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09-06-2009 09:56 PM  8 years agoPost 2
nwolsink

rrApprentice

Ruurlo-Netherlands

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I won't hurt to try, 30% is always on the edge of running one shim or 2 depending on the weather, a colder plug can help as well, try a OS A5 for example

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HelicopterEngines Plugs Mufflers Fuel › O.S. Hyper 50 one shim or two?
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