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Old 20 April 2015, 15:57   #1
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pitch

Does any one on here know about Yamaha prop numbers ? Is 11 1/8 x 13- G
a 13 inch pitch and will it fit a Merc 50 hp. 2 stroke circa 1985. cheers..
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Old 20 April 2015, 17:35   #2
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That's 11&1/8" diameter and 13" pitch. Don't know about the splines, but it's a bigger diameter than the Merc prop you'd have on a 1985 50hp as standard. Standard on yours is somewhere between 10&1/2" diameter and 10&1/8" diameter.


Get a Merc prop. The diameter changes will mess you about as it's not a direct pitch for pitch swap with a Yam prop.

If thats a good 50hp on an SR4, you can swing a 14" pitch merc prop if you're solo.
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Old 20 April 2015, 18:06   #3
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Quote:
Originally Posted by Nos4r2 View Post
The diameter changes will mess you about as it's not a direct pitch for pitch swap with a Yam prop.
'appen it's an "emergency situation"
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Old 21 April 2015, 02:32   #4
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Some great info there, learning all the time. Thanks lads..
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