prop shaft or a gearbox for OJ marston

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blokewithaboat
Posts: 3
Joined: Tue May 15, 2018 9:05 pm
Location: uk

prop shaft or a gearbox for OJ marston

Postby blokewithaboat » Wed May 16, 2018 9:48 pm

Hi all
Just wondering if anyone can help with this?
I have an OJ marston that somebody had converted to a clutched gearbox in the distant past! All proper marston bits on it too so there's a chance of some swaps of the redundant parts if anyone out there can provide me with a suitable part in good enough condition for the conversion.

The alternative would be a period correct direct drive gearbox which would make things quite a bit easier for me.



Having read all the previous posts on how fragile some of these older seagulls can be i'm all too aware of the risks involved, but i can handle it.

cheers


bwab

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Oyster 49
Posts: 2929
Joined: Tue Oct 26, 2010 6:55 pm
Location: Erfurt, Germany

Re: prop shaft or a gearbox for OJ marston

Postby Oyster 49 » Wed May 16, 2018 10:37 pm

Have a chat with Charles UK, he might be able to help.

Horsley-Anarak
Posts: 2635
Joined: Thu Aug 07, 2008 8:42 pm
Location: Surrey

Re: prop shaft or a gearbox for OJ marston

Postby Horsley-Anarak » Thu May 17, 2018 9:51 am

I have a complete OJ box spare.
What is the weather like in Bristol :lol:

H-A

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charlesp
Posts: 2554
Joined: Mon Mar 06, 2006 1:37 pm
Location: Poole, Dorset, England

Re: prop shaft or a gearbox for OJ marston

Postby charlesp » Thu May 17, 2018 10:47 am

For complete authenticity it'll need a drive shaft tube, too, 'coz the clutched version will have the threaded hole at the top.

Is there any possibility this could have been a pre-war conversion done, perhaps, by British Seagull?

Does yours have the pen nib extension at the bottom of the exhaust tube?

If you register this with CharlesUK then he may well have contacts that can help, and he may well have someone waiting for a clutched gearbox for what I must assume is a slightly later motor with a round drive shaft. He has a "wish list" of people, and is always helpful.

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seagull101
Posts: 361
Joined: Mon Jan 23, 2017 10:30 pm
Location: Scottish islands

Re: prop shaft or a gearbox for OJ marston

Postby seagull101 » Thu May 17, 2018 5:05 pm

As everyone is saying, speak to Charles UK about this.

Whats your real name so we can know you a bit better?!

Jacob

tambikeboy
Posts: 578
Joined: Sat Oct 29, 2016 2:01 pm
Location: Scotland

Re: prop shaft or a gearbox for OJ marston

Postby tambikeboy » Thu May 17, 2018 5:48 pm

seagull101 wrote:As everyone is saying, speak to Charles UK about this.

Whats your real name so we can know you a bit better?!

Jacob



Eric...shone ..or is it Billie. :twisted:
Roll me up and smoke me when I die
Regret is just a memory written on my brow

Horsley-Anarak
Posts: 2635
Joined: Thu Aug 07, 2008 8:42 pm
Location: Surrey

Re: prop shaft or a gearbox for OJ marston

Postby Horsley-Anarak » Thu May 17, 2018 7:26 pm

blokewithaboat post a picture of your gearbox, so we can see the issues it has.

Have found my gearboxes, took some digging, you forget how much seagull crap you have.

20180517_190503[1].jpg


I bought the OJ one about 6 or 8 years ago, when a group of us bought a motor and stripped it for parts.

I was going to change the casing on this one as the skeg is a bit rotten

DSCN0024.JPG
.

If it were me I would replace the sloped bearing for a plain one and make a new prop shaft, what are the internals of your one like?

H-A
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Hugz
Posts: 3043
Joined: Wed Mar 14, 2007 4:41 am
Location: Sydney

Re: prop shaft or a gearbox for OJ marston

Postby Hugz » Thu May 17, 2018 8:20 pm

Any chance l can get the details of your SD and SDP you have, bwab for SD registry? Though l wouldn't be surprised if l dont already have it.

Incidentally l was at a loss at what bwab meant at first so google searched it and it came up as:

"It is often said that if you can hear a bwap but can't see the clown, you are in grave danger and should leave the premises ..."

Amused me.

https://www.urbandictionary.com/define.php?term=Bwap

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Oyster 49
Posts: 2929
Joined: Tue Oct 26, 2010 6:55 pm
Location: Erfurt, Germany

Re: prop shaft or a gearbox for OJ marston

Postby Oyster 49 » Thu May 17, 2018 11:09 pm

Certainly should leave the premises for sure...


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