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Comanche Engines and Propellers
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Topic starter
26/04/2020 11:35 pm
Manifold Pressure
by William Mattson » Thu Sep 13, 2012 6:36 pm
When my plane is not running the manifold pressure guage reads 1" below ambient pressure. I do not worry about this as it's very consistant.
My question is this. If I want to set 75% power by the POH, would I need to reduce the manifold pressure 1"?
Thank you,
Bill
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Re: Manifold Pressure
by Zach Grant L1011jock » Thu Sep 13, 2012 6:51 pm
Yes, assuming that your error is constant throughout the entire range.
Zach
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Re: Manifold Pressure
by Jay » Fri Sep 14, 2012 3:56 pm
If you are based at an airport with a field elevation of 1,000 feet (+/-) then your MP gauge is fine. If you are at sea level, then adjust as Zach suggests.
Jay
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