Prop pitch and load questions...

[ZmOz]

I have a '74 inline 6 mercury 150hp outboard attached to a 16' CV-16. I need a new prop, as a peice of wood took a chunk out of my old one. The prop I have now is 19 pitch, and I know that's too small because at WOT I can get about 6500 RPMs. If I get a new prop that is 20 or 21 pitch...that should be perfect. What I'm wondering about is pulling skiers and having the boat completely loaded down. At that point, with a 20 or 21 pitch prop, wouldn't WOT be under 5k RPMs? Is that really bad?

 

[Dhadley]

Re: Prop pitch and load questions...

Carleson CV-16, what a cool boat!<br /><br />You are correct. Get the 19 redone for pulling the skiiers etc and the 21 will certianly give you more speed. <br /><br />You may be able to swing something even a tad higher depending on what you want to turn for rpm. <br /><br />Youre on the right track! good luck!

 

[ZmOz]

Re: Prop pitch and load questions...

If I just wanted to go out for the day...with say, 3 people and a big cooler, would I really need to change the prop for something like that? I would still like to drop everyone off and speed around...without having to change the prop.