Improved chaincase seals

Information relating to the Matchless G9 or AJS Model 20 500cc twin
tomshayes
Posts: 175
Joined: Sat Jun 16, 2012 10:06 am
Location: KENT UK

Improved chaincase seals

Post by tomshayes »

Hi All

Just for those that maybe dont know, The US OC does an improved T section chaincase seal.

I just ordered 2

They're $10 each plus $5 carriage.

2 worked out at £16.52.

You can order them from John Diederich at the AJS & Matchless Owners Club US via Paypal.

His e mail address is cycletoys@aol.com and the Paypal address is ajsmoc@aol.com

Tom Hayes (Kent)
en7jos
Posts: 1063
Joined: Wed Oct 13, 2010 12:00 pm
Location: Hong Kong
Contact:

Improved chaincase seals

Post by en7jos »

Hi Tom,

Are these different to the ones offered by Mr Buckingham as per the adverts in the back of the Jampot mag, i.e.

"Is your tin chaincase leaking? I have the
cure, a heat and oil resistant neoprene seal.
Please send cheque for £10 to
G.Buckingham - price includes P&P."

I tried one of the Buckingham ones and it seemed a big improvement over the standard type in combination with a little tweaking of the chaincase halves to bring them into alignment.

Cheers, James
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My Matchless G3LS website is here - http://www.matchlessclueless.com
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tomshayes
Posts: 175
Joined: Sat Jun 16, 2012 10:06 am
Location: KENT UK

Improved chaincase seals

Post by tomshayes »

No idea>>>> Probably the same part..either way I got em for £8.26 each inc shipping!
Tom Hayes (Kent)
Don Madden
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Posts: 2882
Joined: Mon Jan 01, 1990 12:00 am
Location: USA USA

Improved chaincase seals

Post by Don Madden »

They are not the same. I was involved in the re-manufacture with Bill Bassett, who has them made especially for us. Our version is thicker, allowing a seal even with mildly damaged cases & has a large edge to fill the band, making them look similar to the "C" section type. They are also re-usable without having to scrape sealer off. I swear by them, not at them. Cheers, Don.
wilko
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Joined: Wed Oct 12, 2005 10:45 pm
Location: victoria AUSTRALIA

Improved chaincase seals

Post by wilko »

Love to see a picture of the profile please.
Don Madden
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Joined: Mon Jan 01, 1990 12:00 am
Location: USA USA

Improved chaincase seals

Post by Don Madden »

"Ask & ye shall receive" pic under Parts, post-war singles. Cheers, Don.
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dave16mct
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Posts: 3234
Joined: Mon Jan 01, 1990 12:00 am
Location: LANCASHIRE UK

Improved chaincase seals

Post by dave16mct »

I'm surpised that no-one has mentioned the melamine chipboard method here. No seriously, I read it in the jampot years ago. I tried it and it works perfectly.
2 pieces of melamine chipboard, smooth and flat. (there loads of it at the tip!) Draw round both chaincase halves. (cut a small hole for the oil channel that sticks out.) Chaincase halves have to be clean. Smear a band of grease either side of the lines Put a good thick layer of silicone on the chaincase edges. Push the halves down and settle them on the silicone. Leave overnight. Trim excess silicone off and slide the halves off the board. You now have two perfectly flat and smooth chaincase halves ready to fit. A thin smear of grease to stop them sticking together and fit in the usual way. Can be taken apart anytime and re-assembled with no mess.
Cheers Dave

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rex.webb
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Posts: 2947
Joined: Mon Jan 01, 1990 12:00 am
Location: CAMBRIDGESHIRE UK

Improved chaincase seals

Post by rex.webb »

Dave that sound OK ? .Must try it on my 1937 AJS Cases .
Only trouble is i need to take them both off ?.
r w webb
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Rob Harknett
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Joined: Mon Jan 01, 1990 12:00 am
Location: ESSEX UK

Improved chaincase seals

Post by Rob Harknett »

37 or 38 Rex, ?? Don't forget 37 has the brake pedal on the chaincase centre stud.
If the chain cases are spread a spacer inside would be needed to suit. then you get to the brake pedal, will it still fit on the stud. A lot of muck gets in the case via gear box & dynamo shafts. So getting the cases nicely sealed, when you do have need to take the outter cover off, it will probably be to replace the prematurely worn out primary chain.
itma
Posts: 7721
Joined: Tue Nov 22, 2005 6:01 pm
Location: UK

Improved chaincase seals

Post by itma »

re chaincase oil leaks

Have I been wasting my time after all these years?

seems like it.
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