So as was shown in a prior post, my prop is in tough shape. Going to go with a stainless prop as this motor sees quite a bit of muck and sandy bottoms. Maybe it will wear better.

As weird as it may seem, I have never had to purchase a new prop as I have always been able to rebuild the ones that were on the motor. This is a first for me. I was out in the garage the other day and looked at the prop and this is what was stamped on the outside of it. Would this be the prop size or do I need to take the prop off and look elsewhere? This is a 1996 or 1999 Evinrude 15HP 2 stroke motor.

Do I stick with the same size? Current prop worked good? Anything to kjnow about buying a stainless replacement? Best places to purchase from? Anything else?

Thanks -

Mark

The right way to do it (but seldom done with a 15 hp outboard) is to have a tach on the motor and then get a new prop based on the rpms observed given the type of loads you usually have. Barring that just get one the same size, since it has been working for you.

I'm assuming you have a photo to attach, that didn't show.

No pictures here either. Tod is 100% correct. You need to know the current prop parameters and wide open throttle rpms when selecting a new prop. As for props I've used both of the below.

www.ptprop.com

Solas and Rubex Boat Propellers

Eric

Prop size will be on the front face of the hub. Yes the prop needs removed to see the numbers.

Personally, I don't run stainless. That said I don't see a need to drop down in size on a small motor. Reason for dropping down is an aluminum prop will flex under load more than a stainless prop. This difference in flex, is more prevalent in larger motors that generate more torque. I just don't think the slight difference in flex generated by a 15hp, has a noticeable difference on a 15hp motor.
I generally get all my props thru "i-boats.com" Good price and quick shipping. For my 15hp and 25hp motors I run the Solas brand AMITA series in a 3 blade. I can purchase 2 aluminum props for the price of one stainless prop.

Boat Propellers for Sale, Stainless Steel Boat Props - iboats.com

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Take care, Huntindave McCann SHELL ROCK IA. ,,,,,, "As sailors grow older, the wiser ones move to smaller boats." Thomas Firth Jones, Multihull Voyaging

Thanks everyone. I now added a picture and I wasn?t drinking he first time I posed the question.

I am considering stainless as this motor only gets used in area with lots of muck and sand. The aluminum has been rebuilt more than once due to the damage this kind of motoring causes. I?ve been told the stainless will last longer in this type of environment which I can believe. I can?t recall the last time I?ve hit anything underwater so not too worried about damage that can be caused by running a stainless prop.

Maybe I just like shiny stuff.

Mark

Now that you said this you might want to consider staying aluminum, or knocking on wood

Mark,

I'd run with the same set up that the motor came with.

I considered going with Stainless too, but the aluminum will allow for a bit of flex... If you ever did whang into something like bedrock, a stainless may transfer the blow up to the working parts on your motor, and it could cause damage to it that would negate any of the benefits you gained from the stainless.

https://toddduncantennyson.substack.com/