Quote Originally Posted by Jippe View Post
Tiny tach wont work anymore, its stuck to 1850.. so I dont know rpm.
First 2 blade: 6 5/8, 12-14 1/2, second 6 1/2 12-13 5/8, both cupped thats why pitch range.
Speed was only 50-55 mph max. They were slipping and spraying water too much..

With dewald max speed was 58 mph, rpm 5800. I didnt dare to drive faster because it was porpoising so much
You mentioned that you were going to test a Hill cleaver 11" pitch... I have seen the Ron Hill cleavers for Yamato engines. I honestly thought that they look a bit heavy for their size, but that's just me. The kind I'm referring to are the "three blade" with the large solid hub, if that is what you have...

I sure would like to know how it stacks up though against the Dewald if the pitch is about the same. Those Dewalds are nice looking well designed props! I cant wait to read if the Hill cleaver really does the trick!