got a beat up prop, want a new one but need advice

[peacekeeper6]

I am not gonna get on here and ask everyone what prop to get. rrather i want to know how i can gudge this and what is the best recommendation from people who have my setup or close to it.

-26 ft larson cabin cruiser
-use it in salt water in the river with strong currents and off shore as far as 40 miles out.
-have a 3 blade on there now that has a dented fin but an unreadable number
-has trim tabs and or hyrdo fin
-i somtimes pull a tuber or skier.
-right now i WOT at 4500 RPM and around 31 MPH according to theGPS (CHEVY 350 260 HP MERC)

thanx guys!

 

[walleyehed]

Re: got a beat up prop, want a new one but need advice

You can wait for an answer, but the best info will be given if you can post any numbers from that prop.
Someone here may have the same boat/engine combo, but what if they have more/less weight, and maybe operate 1000ft elevation higher?
You could be 2-4" different in pitch.

 

[Crownie2]

Re: got a beat up prop, want a new one but need advice

You could try the Prop Selector at the Mercury Marine site. It can give you ideas and get you close.

 

[peacekeeper6]

Re: got a beat up prop, want a new one but need advice

the only numbers i could pull off the prop was GP33656A, i dont know what these mean, can anyone help?

 

[peacekeeper6]

Re: got a beat up prop, want a new one but need advice

also i took 9 people out on the boat last night and couldnt get it to plane without getting some people into the front of the boat. My boat is rated for 12 people what could be going on? my tabs are currently not working could this be my problem? my prop numbers are listed above.

 

[walleyehed]

Re: got a beat up prop, want a new one but need advice

OK, let's start over...
The 4500RPM...was that a light load, or full of people?
Is your boat 23' or 26'?
If you can give me this info, I "think" I can figure the prop you have now, because we have a known GPS speed, I know the slip rate will be high because of boat size, and if we use your tach figure (if we knew it was accurate), I think I know what you have but I need to know if you were light or loaded with the 4500RPM, and the length of boat.....
I think we can get "real" close...

 

[peacekeeper6]

Re: got a beat up prop, want a new one but need advice

well the boat is a 26' from tip of anchor to swim step. The load that day was 2 people.

 

[walleyehed]

Re: got a beat up prop, want a new one but need advice

I think you have a 13 pitch prop...