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Old 07 October 2010, 04:23   #1
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Country: UK - England
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Boat name: Touch Bottom
Make: Avon
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Engine: 50 hp Merc Power t&t
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Prop No.

Hi Can anyone tell more about this prop please, Part No.48 79570A4 15P. What I would really like to know is how many splines. And will it be suitable for 50Hp. 4 cylinder Brown band 2 stroke. Many thanks.
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Old 07 October 2010, 13:57   #2
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An ad on Boats and Outboards lists it as a prop for Merc 150/200hp engines, which should make it a 15 spline hub.

I found that most of the Merc 50's have a 13 spline setup, except the Bigfoot, which has 15.

I suspect the blade diameter and hub diameter would not allow it to fit your 50, even if you had the correct spline count on the shaft.


jky
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Old 12 October 2010, 12:12   #3
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Quote:
Originally Posted by Mercury View Post
Hi Can anyone tell more about this prop please, Part No.48 79570A4 15P. What I would really like to know is how many splines. And will it be suitable for 50Hp. 4 cylinder Brown band 2 stroke. Many thanks.
13 spline x 15" pitch, not too sure on dia, usually around 10" > 10 3/8" ish. cant find that prop No. in my books, ur brownband engine would be from 1984

Merc 500s went from 11 splines to 13 splines around 1970
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