What manifold pressure are you seeing?

I was flying between 0 and 4500 feet. WOT is 5500 RPM but I usually
cruise 5200 RPM. Didn't
notice the manifold pressure but I could take a note of it next time.

Very very important. Power is directly proportional to manifold pressure.

WOT 5500 RPM at 4500' manifold pressure is 26.5 in. hg.
5200 RPM at 4500' manifold pressure is 23.5 in. hg.
5200 RPM at 6500' manifold pressure is 22.0 in. hg.

I don't know what the white exhaust means but it is not lean. Maybe in a
car with a catalytic
converter and muffler white means lean. My O2 sensor is working
perfectly as far as I can
tell. It reads 0.8 average anytime in flight with RPM over 4000. That is
when the ECU is
operating on internal maps. It read 0.45 when I was at 3000 RPM on base
leg. That is
when it is closed loop using the O2 sensor.

--
Perry Mick
Custom Composite Props
mick@bridgingworlds.com
http://www.ductedfan.com

Make a low pass and tell me what it is nearer sea level,
Sounds a bit low at 4500'
Or just during takeoff. What is the field elevation there?

Paul Lamar
 
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