Question about prop performance

[Trooper583]

Hello, I recently bought a 1995 Rinker 212 Open bow with a 4.3 Mercruiser. It currently has a 23 pitch stainless prop installed. I have had the boat (first one) for about a month now and as I learn more about it, I have more questions. While cleaning it up after a night on the lake I began to inspect the prop. I noticed that the outer edges of the prop looked like they had been ground or sanded on. After doing a little thinking, it dawned on me. Most likely, the previous owner probably got into some shallow water and "shined" the prop up. I would imagine that he probably ground the rough edges off and then sanded it down to make it look better. I noticed that this modification took some of the "cup" out of the blades.

My question is this. Should I have the prop "re-cupped" or re-worked or whatever you do to them? I am really wondering if this mod to the prop is effecting my performance.

 

[Bondo]

Re: Question about prop performance

Ayuh,... Got a picture,..??

 

[steelespike]

Re: Question about prop performance

Tell us about your performance.Details wot rpm and speed.How is the hole shot?
Any vibration.Hold a pointer near the blade tips and rotate the prop.
A prop shop can tell you if the prop needs work.

 

[Trooper583]

Re: Question about prop performance

Well this is the first boat that I have owned but I believe that the hold shot could be better.. What do you guys think about the way the prop looks?

 

[steelespike]

Re: Question about prop performance

Pretty hard to see but looks superficial to me. Your hole shot would be a little sluggish with a 23" pitch. We need hard numbers to tell where your at.
"Hole shot could be better" doesn't tell much.wot rpm and speed would tell a lot.

 

[MPII]

Re: Question about prop performance

That looks fine to me. I'm no expert, but it actually looks pretty clean. regarding Hole Shot, I have a 206 so a foot less, but I find the best combo of top end and hole shot to be a 21 pitch. I have ran a 19, 21, and 23 and the 21 gives me the best of both worlds.