4 blade mercury prop
 

I have a 21 pitch revolution 4. Anyone have a 19 or 17 that I could make a few passes with before I buy or get mine worked down? I need to gain a few rpms back.

Call Ken at PropGods.com he will let you barrow one for like 40 bucks or less. That's what I did when I tested a 21p Rev4 as a matter of fact.

I actually just got my rev4 back from Mark Croxton. He added tip cup and cleaned up the leading edges.

I've got a 17p rev4. I'd love to try out your 21p on my boat. I'll be on big lake this weekend starting Friday morning. Shoot me a P.M. and I'll give ya my number.