hotrod180
FRIEND
Port Townsend, WA
What does it take to get the C66 approved for the PPonk? What about the newer 88" 2A34C203?
My understanding is that Steve (or whoever) determined that the C203 is not compatible with the 470-50 engine,
I assume it's a harmonics / vibrational thing.
The 470-50 uses the same crankshaft counterweight configuration as the 470K,
I have an STC from North Sound Aviation approving the C201 & C203 props on the K engine.
There was an 82" C203 on my engine for like 1300 hours, starting back around 1993, then an 88" C201 for another few hundred.
I've only owned it for 5 years, but no issues that I can detect.
The C203 is a popular prop, installed on a lot of 180/182's--
if it can be approved for the 470-50, that'll save some folks a lot of money as they won't have to buy a new prop when converting to the -50.