Prop Pitch

[FishingCop]

If you saw my fishing post, you remember that I broke large chunks out of two blades on my prop. Started looking on-line for a new one and the first thing I found out was that I don't know anything about props :?

I see they have a "pitch" from 8" up to 17". Okay, what's that all about?

I have a 40hp Force, 1996 with a (broken) 3 blade prop. What pitch do I need or how can I tell what pitch I have??

Thanks a million.....

 

[Quackrstackr]

The pitch is the distance that the prop would theoretically move forward in one revolution.

There are also variables like diameter, rake and cup thrown in there, too. :lol:

There should be a recommended size for your particular motor / application. There are several prop calculators out there on the net that will select the correct size range for you.

A lot of props have the size stamped right into the hub somewhere.

Chances are, you may have never truly had the right setup for your particular boat. Now is the time to optimize. :wink:

 

[RONOFA]

Have the same problem, broke prop this weekend, THOUGHT I would be able to look online and pick one up, found that not so easy, they wanted to know the weight of the boat, RPMs a full throttle, etc.. The lady at Merc. told me that there is a part # on the prop itself, I will find it and get the same one. Seems easiest way

 

[Quackrstackr]

That is the easiest way but you will get your best performance if you know the variables to plug in.

Some of the calculators are a lot more flexible than others.

https://appcenter.mercurymarine.com/propSelector/home.do

https://dansdiscountprops.com/BuyNow/propWizard.cfm

You guys may be missing your potential top speed or hole shot ability by quite a bit with a generic prop size.

https://dansdiscountprops.com/propeller101.htm

 

[Fish Monger]

There is a lot to the pitch on a prop, this is definately going to impact the performance of your boat. Some people change the pitch of the prop to slow the boat down to help in trolling. After all, it's really the only thing that links the entire motor to the water, what makes the world go round so to speak.