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prop help needed
Posted: Sun Jul 05, 2015 7:05 pm
by dadymat
I never knew choosing a prop would be so mind numbing...lol, a lot more technical than one would think....need help choosing prop for 2002 22' crest pontoon w/ 2002 Mercury 90hp 2 stroke motor ...cant make out part number on existing prop has been sitting and is corroded and in very bad shape...any help would be appreciated
Re: prop help needed
Posted: Sun Jul 05, 2015 7:19 pm
by RobZ71LM7
This can give you a good starting point:
https://www.mercurymarine.com/en/us/pro ... #/step-one
That and info from others in here should help you nail down a good initial guess.
Re: prop help needed
Posted: Sun Jul 05, 2015 7:38 pm
by dadymat
thanks for response, that Mercury page is what started my confusion, my results ended with 4 choices ...all different pitches....14, 16 and two 15s..some 3 blade some 4.....not sure how that can happen lol
Re: prop help needed
Posted: Mon Jul 06, 2015 6:12 am
by Scott1
You need to know the pitch of your prop now and you should be able to nail it. Merc will give you different choices for 4 blade or 3 blade. I run 3 blade so I ignore the 4 blade recommendations.
If you don't know your pitch, that calculator will not get you close enough.
Re: prop help needed
Posted: Mon Jul 06, 2015 11:28 am
by Waterlogged
14, 15 and 16 sounds like a lot of pitch for that set up. Maybe with your WOT RPM someone could give you a starting point.
Glenn
Re: prop help needed
Posted: Mon Jul 06, 2015 4:39 pm
by dadymat
Waterlogged wrote:14, 15 and 16 sounds like a lot of pitch for that set up. Maybe with your WOT RPM someone could give you a starting point.
Glenn
WOT RPM is 5000-5500
the numbers on the prop (i think) i can make out are 4877 8(?) 1(?) 2A4 5(?)15(?)