Richard Connell
Well Known Member
Heres a good one for you engine/prop/governor gurus.
IO-360-M1B with an MT P-860-4 driving a Hartzell BA. Approx 500hrs over 5.5 yrs
Of late I've noticed that when flying in and out of IMC, that I get a slight RPM drift. In clear air its rock solid all day. In and out of the CU though, I get a +/- 10-20 RPM. Enough to feel, so its not a sender issue.
Ive looked over all the linkages and theres no obvious sign of play. I spoke to MT and they said that the current P-860-4 is a rev-G governor now with slightly higher operating pressure and pumping capacity than the rev F version currently installed.
Given that its only a few months away from 72 mth TBO, and the cost of overhaul here is more than a new one, I think I know what the resolution is. Just curious as to whether anyone has had experience with this.
Cheers
Richard
.
IO-360-M1B with an MT P-860-4 driving a Hartzell BA. Approx 500hrs over 5.5 yrs
Of late I've noticed that when flying in and out of IMC, that I get a slight RPM drift. In clear air its rock solid all day. In and out of the CU though, I get a +/- 10-20 RPM. Enough to feel, so its not a sender issue.
Ive looked over all the linkages and theres no obvious sign of play. I spoke to MT and they said that the current P-860-4 is a rev-G governor now with slightly higher operating pressure and pumping capacity than the rev F version currently installed.
Given that its only a few months away from 72 mth TBO, and the cost of overhaul here is more than a new one, I think I know what the resolution is. Just curious as to whether anyone has had experience with this.
Cheers
Richard
.