Bought a new prop.....Hope it works

[wingmastr23]

Have a 96 Bayliner Capri 1954 with a Merc 3.0l I/O

Current RPM is around 4500 WOT

Current prop is 13.75 x 21

Top speed is around 40mph with one person (gps)

Just went with a 14 x 19 3 blade Alum.

Gotta pull better - gotta get on plane faster.

What will a larger diameter prop do for me? Did I negate the pitch by switching to a larger dia prop?

 

[Brewman61]

Re: Bought a new prop.....Hope it works

Was your old prop an AL 3 blade too? If so you may expect a couple hundred more WOT RPM's.
What is the WOT range spec for you boat?

The diamater change would do nothing.

 

[steelespike]

Re: Bought a new prop.....Hope it works

RPM rating is 4,800 It should help the hole shot rpm gain 300 to 400.Probably stay on plane a little easier but you may have to watch the rpm's. at wot.

 

[wingmastr23]

Re: Bought a new prop.....Hope it works

Yea....rated at 4800 RPM WOT The original prop was also an AL 3 Blade.

I am hoping that my hole shot improves! I was also advised to go with a 15 x 17.....but just wanna take small steps...if this doesn't help, I might give that one a whirl. (no pun intended )

 

[fossill]

Re: Bought a new prop.....Hope it works

You might want to look at a 4 blade prop or even a High 5 depending on your budget. 3 blade props are good for top end and cruising but very poor for watersports I've found.