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Old 16-12-2022, 07:53   #1
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Terminology question - prop shaft support

On many sailboats with diesel auxiliaries the engine shaft exits the hull at a shallow angle and passes through a bearing that is held in position by a support or strut, beyond which is the prop.



My understanding is that the bearing itself is called the cutlass bearing, but is there a common term for the strut?

I've heard it called a skeg, but that doesn't sound right - I thought skegs we're rudder supports.

I've been calling it the cutlass bearing support, but is there a preferred term?
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Old 16-12-2022, 08:02   #2
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Re: Terminology question - prop shaft support

Prop Strut or just Strut are the terms that seem most common in my area.
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Old 16-12-2022, 08:03   #3
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Re: Terminology question - prop shaft support

Typically in the US the shaft support is called the prop shaft strut, or just strut.

In Europe it is frequently called a “P” bracket.

Don’t know about elsewhere.
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Old 16-12-2022, 08:06   #4
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Re: Terminology question - prop shaft support

The bearing is a Cutless (as in doesen't get cut, brand name) bearing, not a cutlass (naval sword).
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Old 16-12-2022, 09:29   #5
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Re: Terminology question - prop shaft support

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Originally Posted by tkeithlu View Post
The bearing is a Cutless (as in doesen't get cut, brand name) bearing, not a cutlass (naval sword).
Also "shaft" or "stave" bearing. Cutless is a brand name of BF Goodrich Co, there are other brands available.
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Old 16-12-2022, 10:17   #6
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Re: Terminology question - prop shaft support

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Originally Posted by tkeithlu View Post
The bearing is a Cutless (as in doesen't get cut, brand name) bearing, not a cutlass (naval sword).

Just to further confuse things, B.F. Goodrich started stamping the image of a cutlass on its cutless bearings in the 1950s.
https://www.seattleyachts.com/news/i...utless-bearing
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Old 16-12-2022, 16:31   #7
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Re: Terminology question - prop shaft support

Here in oz you can have a prop skeg or a rudder skeg ,both do the same thing , support a shaft ,prop or rudder ,o/s they call them P brackets ,horses for course’s.⛵️⚓️
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Old 16-12-2022, 16:56   #8
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Re: Terminology question - prop shaft support

You could just call it "the thingamajingy" that holds the prop shaft under the boat and probably get away with it......
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Old 16-12-2022, 17:28   #9
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pirate Re: Terminology question - prop shaft support

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Originally Posted by MicHughV View Post
You could just call it "the thingamajingy" that holds the prop shaft under the boat and probably get away with it......
Prop Hanger.???
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Old 16-12-2022, 20:10   #10
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Re: Terminology question - prop shaft support

https://www.duramaxmarine.com/johnso...oduct-line.htm
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Old 16-12-2022, 23:19   #11
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Re: Terminology question - prop shaft support

Quote:
Originally Posted by Searles View Post
Here in oz you can have a prop skeg or a rudder skeg ,both do the same thing , support a shaft ,prop or rudder ,o/s they call them P brackets ,horses for course’s.⛵️⚓️
Called them lots of different names , usually after hitting my head on it.
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Old 17-12-2022, 12:32   #12
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Re: Terminology question - prop shaft support

I've wondered why "P" bracket. I suppose it could be for Propellor. And I've heard them called that here in Australia, didn't think to ask if the speaker were English or Strayan.

I'm from the "prop strut" school (Calif.).

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Old 17-12-2022, 13:04   #13
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Re: Terminology question - prop shaft support

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Originally Posted by JPA Cate View Post
I've wondered why "P" bracket. I suppose it could be for Propellor. And I've heard them called that here in Australia, didn't think to ask if the speaker were English or Strayan.

I'm from the "prop strut" school (Calif.).

Ann
P-Bracket or Propeller Bracket is what we called it when I studied in Southampton (UK).
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Old 17-12-2022, 14:25   #14
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Re: Terminology question - prop shaft support

Quote:
Originally Posted by JPA Cate View Post
I've wondered why "P" bracket. I suppose it could be for Propellor. And I've heard them called that here in Australia, didn't think to ask if the speaker were English or Strayan.

I'm from the "prop strut" school (Calif.).

Ann
More to do with the shape of the bracket.
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