Here is the prop in question.

mach stern driver maybe

bblades
 

was hoping brett would tell us.....

Looks a little like a small round ear Mach but the hub is different and Mach's had their name cast in. Unless it is a very early one that I have never seen.

The vibro peen 29P looks like the work of the Spinelli Bros. but they always put their name on the prop too. Plus this isn't like any Geometry I remember from their repertoire.

I'm not sure what it is but I would bet it is a early representation of what the model became since there isn't any cast markings on it.

If we had it our shop in our hands, I might be able to get you a better answer.

Thank you,
Brett

question is:judging by the shape,can this prop be any good for my boat?or should i toss it in the flea market box??
1995 pq 27,496ho/whipple +.030'',bravo xr,approx 600hp
thanks,
jack

Looks like the diameter may be a touch smal but, every prop that "may" work is worth trying.
We'll learn something.

Brett

If your running a 3 blade right now on a PQ then almost any 4 blade is going to slow you down a couple mph assuming the 3 blade is the right pitch for your boat and it sounds like it is. That 4 blade prop in question might be good for cruising or pulling a skier or tube. I would keep it if I were you .. Never know when you might bang up your prop.

Chris

''...good for cursing...''..im familiar with that :lolhit:

yea,i believe in 3 blades too,but i'll surely give it a try next summer...
jack

Sorry , I guess i was trying to answer a the question about the prop