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Author Topic: Prop Shaft Extensions  (Read 1161 times)

Offline David Ruff

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Prop Shaft Extensions
« on: May 01, 2015, 06:20:09 AM »
Looking for proper prop shaft extensions for Enya 30-45 and OS 40-46 engines.

My Ares shows a Brodak 40 with a 3/4 in prop extension

I am planning to use an Enya or OS 40 engine.

Anybody know the proper threads for these?

Thanks
Retired Army

Offline David Fountain

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Re: Prop Shaft Extensions
« Reply #1 on: May 01, 2015, 06:44:48 AM »
1/4-28 on the crankshaft stud for the OS and I'm pretty certain the enya as well (David)
If it ain't broke, Don't Fix It!!

Offline frank mccune

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Re: Prop Shaft Extensions
« Reply #2 on: May 01, 2015, 07:34:52 AM »
    Hi David:

    It would be a good idea to check on the Enya threads! All of my Enya engines have metric threads that range from 6mm to 7mm.  Perhaps the more modern Enyas have converted to the S.A.E. thread form.

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Offline Steve Thomas

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Re: Prop Shaft Extensions
« Reply #3 on: May 01, 2015, 04:45:42 PM »
If you're looking at one of the more modern Enyas (eg SS30/35/40) then it's 1/4-28.  For something like an old 35-III or 45-I, you need 7mm.

Offline David Ruff

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Re: Prop Shaft Extensions
« Reply #4 on: May 02, 2015, 04:12:22 AM »
If you're looking at one of the more modern Enyas (eg SS30/35/40) then it's 1/4-28.  For something like an old 35-III or 45-I, you need 7mm.

Steve; they are all new mfg engines, so if your 1/4 -28 is correct, then I should be good to go.

Thanks much
Retired Army


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