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 surface drive build 
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MMT Member

Joined: Wed Aug 08, 2012 9:15 pm
Posts: 40
Post surface drive build
I am building a surface drive motor from a 27 hp b&s vertical shaft.. i am wondering how long do make the shaft that is going vertical. It is a tall transom boat. Any help greatly appreciated


Wed Aug 08, 2012 9:21 pm
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Joined: Wed Jan 14, 2009 12:31 pm
Posts: 342
Location: Faribault, Mn
Post Re: surface drive build
Depends... what angle is your prop going to enter the water. How far do you want to be able to trim down. What angle is the transom of your boat. The length of that shaft would be one of the last things I would design in a project like this.


Thu Aug 09, 2012 11:34 am
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MMT Member

Joined: Wed Aug 08, 2012 9:15 pm
Posts: 40
Post Re: surface drive build
Thank you, this is my first mud motor build.


Thu Aug 09, 2012 3:00 pm
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Joined: Tue Jan 13, 2009 7:46 pm
Posts: 1947
Location: Longview. TX
Post Re: surface drive build
viewtopic.php?f=41&t=30212

a lot of good tips here... :D

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Thu Aug 09, 2012 3:30 pm
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