Prop (pics) and questions

[cornholio]

Currently pushing a 23' wac powercat 1979 with a 1989 Rude 225 rebuilt 1999. Getting 5000 rpms at wot.<br />I cant see any size markings on the prop. Overall diameter is ~12.5". <br />

<br />Looking to gain rpms and top speed. What prop should I look at?<br /> Also, notice the dings in two of the blades. Do these matter?<br />

 

[phatmanmike]

Re: Prop (pics) and questions

Do these matter?

HECK YES<br /><br />TAKE PROP TO PROP SHOP, THEY CAN MEASURE IT AND GET YOU WHAT YOU NEED

 

[cornholio]

Re: Prop (pics) and questions

I don't feel any vibration, but I know those dings do something. Girlfriend caused those on the boat's maiden (to me) voyage.

 

[JB]

Re: Prop (pics) and questions

And post about it on the Props forum.

 

[cornholio]

Re: Prop (pics) and questions

Mods- thanks for moving my query to the appropriate area.

 

[TilliamWe]

Re: Prop (pics) and questions

Originally posted by myoutboards:<br />

Do these matter?

HECK YES<br /><br />TAKE PROP TO PROP SHOP, THEY CAN MEASURE IT AND GET YOU WHAT YOU NEED

I totally agree. You should get that prop repaired, and the shop will be able to tell you it's pitch while they have it. From there you'll have a better idea what you need. If 5000WOT is too low, you'll need to decrease pitch. If 5000WOT is too high you'll need to increase pitch. I am guessing that 5000WOT is too low for that engine (judging by the fact that you say you want to gain rpm & speed.) Just remember that usually a decrease in pitch will result in a decrease in top speed, but not if a small pitch decrease lets you turn a lot more RPMs. What is the recommended WOT rpm for that engine?

 

[cornholio]

Re: Prop (pics) and questions

"What is the recommended WOT rpm for that engine?"<br />I was hoping someone could answer that as well. 5000 rpms just seems low to me. 1989 Rude 225 rebuilt in 1999. Thanks.

 

[scottatwork]

Re: Prop (pics) and questions

WOw if you think those are bad, wait till I post a pic of my prop that I'm taking OFF my boat.<br />It has chunks missing....

 

[walleyehed]

Re: Prop (pics) and questions

Good judgment comes from experience, and a lot of that comes from bad judgment.<br />

Yea, Scott....better live up to your signature afore you have L.U. issues..

 

[scottatwork]

Re: Prop (pics) and questions

That would be? Ie don't run tore up propellers?<br /><br />I'm gonna do an oil change on the lower unit after it stops raining.....thinking January or February......(It may stop for Christmas for a day! LOL)......<br /><br />Man, where was all this rain back in July when my tomato's needed it!