Primary Chain

Information relating to the Matchless G11 or AJS Model 30 600cc twin
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Primary Chain

Postby cf160 » Wed Aug 01, 2012 6:33 pm

Posted - 01 Aug 2012 : 4:02:51 PM
Does anyone know the Model 30 primary? As in the number of links for the various years? My suspicion is they are all the same , but just to me safe and wiser , I wonder if anyone (Like William Brown of Brittany)
happens to know .(Or perhaps Don of California) or any other wise ones out there in AJ land? I know the club spares group lists only one chain of 69 links X 1/2" X .305" (or 5/16" . I have a BSA Primary of 69 links. Can I use it on the 31?
David (cf160) Potter(from under the stairs)
David J.Potter
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Primary Chain

Postby Rob Harknett » Wed Aug 01, 2012 7:22 pm

Depends if the roller dia & width is the same as M 31

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Primary Chain

Postby cf160 » Wed Aug 01, 2012 8:07 pm

Didn't they (BSA/Triumph) use Burman clutches as well as AMC? I have a few Buman chainwheels and they all seem to have the same size sprocket teeth on the
chainwheel .
cf160
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Primary Chain

Postby zwarts » Wed Aug 01, 2012 8:29 pm

BSA and Triumph did not use Burman clutches or gearboxes.

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Primary Chain

Postby cf160 » Wed Aug 01, 2012 8:56 pm

Well, Bob :
I rebuilt two BSA's , an A10(1960) and an A 65 . They both used the same 1/2" X 5/16" Renolds Primary chain. I still have an old one downstairs and it looks like the same one as my Model 31 Primary to me, except for the number of links.
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Primary Chain

Postby dave16mct » Thu Aug 02, 2012 12:00 am

Fit it then! What's the problem? Oh, 68 links presuming you he an AMC clutch.

Edited by - dave16mct on 02 Aug 2012 12:09:30 AM

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Primary Chain

Postby cf160 » Thu Aug 02, 2012 4:59 am

Why Dave:
How generous of you ! I will of course, and as soon as possible !
I may have to remove a link to make it fit, but I seem
to recall doing that once before when a primary had
stretched beyond allowable limits.
Is that possible or am I confusing memories with the secondary chain?
"Move down! Clean cups! " said the Hatter.
David J.Potter

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