Is this right pitch prop for my set-up?????

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Rodrunner

Petty Officer 3rd Class
Joined
Mar 2, 2008
Messages
77
Hey guys just bought a brand new boat. Not to sure if the dealer knows what he is doing so I need your input. I bought a 18.5' Fisher deep V fish/ski combo. Put a 150H optimax on the back. My manual says at full throttle I shoulb be between 5200-5700 RPM's. Gonna out her in the water for the first time on wed. My dealer put a 19 pitch 3 blade aluminum prop. Not sure on the diameter. Does this sound right to you guys or is there any way to tell with the info given. I plan to use the boat to fish and ski. thanks a bunch
 
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steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Is this right pitch prop for my set-up?????

I'm not an expert but:: It sure seems like the place to start to me.
 
R

Rodrunner

Petty Officer 3rd Class
Joined
Mar 2, 2008
Messages
77
Re: Is this right pitch prop for my set-up?????

Thanks for your reply. What do you base your statement from. I'm only asking so I have my own insight from others opinions..Thanks Jason
 
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steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Is this right pitch prop for my set-up?????

Hello Jason,Check your personal message tab at the top of the prop forum.
 
Silvertip

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,762
Re: Is this right pitch prop for my set-up?????

While that prop is a good place to start, why don't you make a few runs and then post what rpm wot actually is. We can then fine tune the setup. I'm thinking that engine should be able to twist a 21P on that size boat. I run a 19P on my 17 foot walleye boat powered with a 75 HP Merc.
 
Irv964

Irv964

Petty Officer 1st Class
Joined
May 3, 2008
Messages
315
Re: Is this right pitch prop for my set-up?????

Silvertip said:
While that prop is a good place to start, why don't you make a few runs and then post what rpm wot actually is. We can then fine tune the setup. I'm thinking that engine should be able to twist a 21P on that size boat. I run a 19P on my 17 foot walleye boat powered with a 75 HP Merc.
Click to expand...

Silvertip, are you running a SS or Aluminum prop? What make is either prop?......
 
Silvertip

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,762
Re: Is this right pitch prop for my set-up?????

Quicksilver aluminum. Again, don't get too concerned about props until you know how your current prop performs. If you are close to the top end of the rpm band with an average load, raising the engine a tad (not trimming) may gain the rpm you need. Once you have height maximized, then work with props if you need to.
 
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