Gash
Well Known Member
I just did a takeoff where the engine only made about 15 inches MAP at full throttle, mixture full rich, 950 ft pressure altitude. The engine sounded the same, felt like it was making full power, and takeoff distance was normal. Fuel flow on takeoff was redlined, as expected.
The MAP slowly crept up to 20 inches while flying close to the airport at 3,000 MSL, full throttle. It never went above 20 inches though.
I tried unsuccessfully to Google this, search John Deakin's old articles, reading through my "Fly the Engine" book, etc. and am not finding anything. It seems the main discussion in other threads and articles is instead on high MAP. Does anyone have an idea what might be causing my low MAP on takeoff? I think I've ruled out a bad MAP sensor as I'm getting normal indications on the ground with the engine stopped.
The MAP slowly crept up to 20 inches while flying close to the airport at 3,000 MSL, full throttle. It never went above 20 inches though.
I tried unsuccessfully to Google this, search John Deakin's old articles, reading through my "Fly the Engine" book, etc. and am not finding anything. It seems the main discussion in other threads and articles is instead on high MAP. Does anyone have an idea what might be causing my low MAP on takeoff? I think I've ruled out a bad MAP sensor as I'm getting normal indications on the ground with the engine stopped.
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