Hello. What was your max rpm with 9 pitch propeller? And maybe the 9 pitch one is heavier than the 10 pitch one because of the thickness. I got a suzuki df25a and i had the same problem as you. My prop was big for my boat which is 10.25/10. I just grinded it to make it samaller. I know its not good solution as buy a new 9 pitch one. But i can say it worked . My speed and my rpm is increased. For your situation i can only say the thickness of blade can be a problem.
I’m thinking so as well. I didn’t bring my tachometer out for this test because I figured it would be faster and I wouldn’t have to worry about it but since it was slower, I’ll have to bring it out on my next trim and see.
Hello. What was your max rpm with 9 pitch propeller? And maybe the 9 pitch one is heavier than the 10 pitch one because of the thickness. I got a suzuki df25a and i had the same problem as you. My prop was big for my boat which is 10.25/10. I just grinded it to make it samaller. I know its not good solution as buy a new 9 pitch one. But i can say it worked . My speed and my rpm is increased. For your situation i can only say the thickness of blade can be a problem.
I’m thinking so as well. I didn’t bring my tachometer out for this test because I figured it would be faster and I wouldn’t have to worry about it but since it was slower, I’ll have to bring it out on my next trim and see.