Prop selection

tooold

Recruit
Joined
Mar 24, 2010
Messages
4
From the looks of things...this is a really full topic! Anyway, here's my problem.

I bought a 1992 Stratos 25PD that has prop damage and I want to replace it. BUT, some how the only ID #s that are left are 13 1/2 X something? The engine is an Evinrude 200 XP and has a 4 blade Renegade OMC prop on it with 1/2 the IDs #s gone. Have placed numerous calls to Stratos but they must have things going on with the new ownership etc and have not been able to speak with anyone who might be able to steer me in the right direction. I looked at a similar boat that a neighbor owns that has a 13 1/4 X 25 4 blade aftermarket prop on it, but I believe that boat is a foot longer than mine. Mine is 19'. My engine is running too many RPMs top end and is slow getting out. It will crank 6500 if you wanted to but I have been holding it at below 6,000 which will go about 55MPH. A lot has been ground off by the former owner to clean it up. Anyway, I have been told that you can't get this style boat on top without a 4 blade prop. I don't have a clue.

One question I have have is...is it possible to measure this prop somehow to determine what it is? Any guidance would be much appreciated.
 

Silvertip

Supreme Mariner
Joined
Sep 22, 2003
Messages
28,771
Re: Prop selection

Below is a link to a process to manually determine prop pitch but it may be a lot faster and more convenient to have a prop shop put it on a pitch block. If part of the number is visible, I suggest you place a piece of paper over the numbers and using a lead pencil, rub over the numbers. The missing numbers may appear. I really wonder about your problem however. You said it comes out of the hole slowly and overrevs at the top end. Those two issues counter each other. Normally overreving on the top end would cause the boat to come out of the hole like a rocket. I would start this journey by having the tach checked for accuracy.

http://www.propellerpages.com/?c=articles&f=2006-03-27_manual_pitch_measurement
 

tooold

Recruit
Joined
Mar 24, 2010
Messages
4
Re: Prop selection

Sorry, somehow I got this in here twice. New to forum.
 
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