Can I pose a hypotetical question

If I was a betting man, I would say it was probably an aerobatic prop on
your friend's RV.
I believe the idea is that, there are maneuvers that result in oil
pressure drops (transitional effects of the balls in the inverted system
and some 0 G maneuvers). Much of this happens at high power settings and
flattening of the prop causes significant overspeed. As a result some
prop companies make "aerobatic" props that take more bight in a pressure
drop.


Mike
George Patterson wrote:
Bob Martin wrote:

One of the guys in our hangar has a prop on his RV-8 that apparently
goes to coarse pitch when pressure is lost... its a big ugly fat-bladed
Whirl Wind 200C, IIRC.


Perhaps it came out of a twin?

George Patterson
Drink is the curse of the land. It makes you quarrel with your
neighbor.
It makes you shoot at your landlord. And it makes you miss him.