Well, the insight G4T has already solved a big question for me. My Cessna tachometer sucks. The only place it is accurate is at 2800 RPM, and it quickly starts to error short of what is being produced.
I've been running around with 2600 RPM set, but the engines are only turning 2400. That explains the angle of attack issues at lower RPMs because the error is as great. The only hard running would have been down low, like in the picture (2K) as the MP would have been high. That would not be a problem at my normal cruise altitudes.
Yep, I do monitor the idle RPM, and the check indicates higher than the book, but the idle was set by maintenance with a digital tack, and they have that just right sound. I never drew the connection in that the upper is limit is true.
My Cessna Fuel Flow Indicator is spot on. This doesn't confirm my next expense concerning my airplane, a move to the Electronic International Primary Engine Instruments.
I wish we could add inline images on the forum
