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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › Cold weather break in
03-01-2010 12:12 AM  10 years ago
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burtondude

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Edmonton, Alberta, Canada

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Cold weather break in
I just got a new os 50 hyper for my vibe. Day time temps are around 4C or 37F. Is this an okay temp to break in the new motor? What kind of head or back plate temps am I looking for with the colder weather?

Mark
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03-01-2010 02:44 AM  10 years ago
jschenck

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La Vista, NE.

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What kind of head or back plate temps am I looking for with the colder weather?
That's a tough one but my experience is when the weather is that cold outside case temp on the engine is meaningless. I've had them run way too lean with a backplate that was stone cold. I'd start off 2 full turns out on the main needle for a Hyper and the idle cam at say 11:30 or maybe even 11:00 position. It'll be rich but better that than frying a new engine. Tune it in from there until it sounds right. That's what I'd do but personally here I'm waiting until I'm at least in the mid-40'sºF before breaking in my new engine.
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03-02-2010 07:02 AM  10 years ago
JasonJ

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North Idaho

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I'd start off 2 full turns out on the main needle for a Hyper and the idle cam at say 11:30 or maybe even 11:00 position. It'll be rich but better that than frying a new engine. Tune it in from there until it sounds right.
I just got done breaking in a Hyper 50 rebuild in temps that were in the high 30's, and pretty much did what jschenck stated.
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03-02-2010 07:09 PM  10 years ago
burtondude

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Edmonton, Alberta, Canada

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Thanks for the tips!
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HomeRC & Power✈️Aircraft🚁HelicopterEngines Plugs Mufflers Fuel › Cold weather break in
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