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 shaft size question. 
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Joined: Sat Apr 06, 2013 12:07 am
Posts: 487
Location: port barre,la
Post shaft size question.
I have a question about long tail shaft sizes. I have a 5 hp with a 3/4" output shaft and a 3/4" shaft to the prop. Does bigger motors such as the 15 or 20 or such have a 3/4" shaft to prop also or a bigger one. I know output size will be different but is the prop shaft also? I want to put a bigger motor and prop but worried I would have to change shafts also.

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25 yamaha pushing a 1642 welded flat
20 hp go-devil longtail for hunting
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Tue Apr 09, 2013 8:36 pm
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Joined: Thu Dec 29, 2011 10:30 pm
Posts: 1386
Location: West TN
Post Re: shaft size question.
Same shaft size. Doubt you'll be able to get a motor much bigger that'll still fit your frame.

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Tue Apr 09, 2013 9:05 pm
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MMT Pro Member

Joined: Sat Apr 06, 2013 12:07 am
Posts: 487
Location: port barre,la
Post Re: shaft size question.
Ill weld a bigger plate on it and adjust the cavitation plate. Jist wasn't sure about the shaft. Didn't think a 3/4" shaft would hold up to the abuse of a 25.

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25 yamaha pushing a 1642 welded flat
20 hp go-devil longtail for hunting
.


Tue Apr 09, 2013 9:11 pm
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