Wisdom of Using a Mooney Engine

[Tommy123]

Man, the thought of reclocking constant speed prop several times to get it in the best position makes my fingers hurt.
I bought dual SDS ignition with flywheel triggers, can’t comment on how well it works, got distracted rebuilding my brother’s M20C. I installed a surefly on the Mooney, ground checks good but again, the weather here is keeping me grounded. The 100 hour since overhaul Bendix mag quit after first flight after engine overhaul. Using advanced mode.

[hgerhardt]

Originally Posted by DanH

.........Good discussion of prop clocking here some years ago, with input from Les Dowd. .......... An A3B6D/McCauley combination may be fine on a Mooney 201, but it's pretty awful on an RV. .......

The combination you reference (which is the McCauley paddle blades together with the -A3B6D clocking) might have been awful on your -8, but it's not the clocking necessarily that made it bad, it's the blade style, as you or someone else alluded to later.

The -A3B6D already has the 'preferred' prop clocking that Mike Stewart advocated 12 years ago (in that same thread), which puts the prop aligned to #1 crankpin.

I know from my own -6 with -A3B6D/Hartzell (F7666 blades) that it's quite smooth (of course, that's seat of my pants).

[DanH]

Originally Posted by hgerhardt

I know from my own -6 with -A3B6D/Hartzell (F7666 blades) that it's quite smooth (of course, that's seat of my pants).

I was thinking about the restricted RPM/manifold pressure combination. Yep, it was lovely at normal settings. The problem was flying an approach. The prohibited range shook the airframe, but worse, it seemed to always be exactly the power needed for a glideslope.

Found it...avoid 2250 - 2550 rpm below 15" MAP while descending.