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Engine basics => Engine set up tips => Topic started by: David Ruff on May 01, 2015, 06:20:09 AM

Title: Prop Shaft Extensions
Post by: David Ruff 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

Title: Re: Prop Shaft Extensions
Post by: David Fountain 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)

Title: Re: Prop Shaft Extensions
Post by: frank mccune 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.

                                                                                                            See you Sunday,

                                                                                                            Frank McCune

Title: Re: Prop Shaft Extensions
Post by: Steve Thomas 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.

Title: Re: Prop Shaft Extensions
Post by: David Ruff on May 02, 2015, 04:12:22 AM

Quote from: Steve Thomas 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.

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

Thanks much