Frame numbers confusion

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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Donald duck
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Location: Cornwall UK

Frame numbers confusion

Post by Donald duck »

Hi everyone, be gentle my first post
I recently acquired a 1952 g9 which is confusing me. I found numbers 8865 on the main frame by the seat which isn't corresponding with whats on the log book.
I've done a club dating request with that number, only information available thats its a lightweight, obviously its not.
Please can anyone give me guidance on this?
Best regards
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Eamonn
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Re: Frame numbers confusion

Post by Eamonn »

I suspect the frame number should be "A8865" - I suggest you send an email to the Machine Dating office (dating@jampot.com) and he will be able to advise accordingly.
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John Jarrett
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Re: Frame numbers confusion

Post by John Jarrett »

I didn't think that the "A" frame numbers were introduced until 1954... but no doubt the dating officer will confirm.
G15 Roy
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Re: Frame numbers confusion

Post by G15 Roy »

As suggested send me a clear photo of the frame number you may find the extra digit you may be missing as 1952 bikes had 5 digits unless its a Comp frame. yes the letter A was introduced in 1954.
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Donald duck
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Re: Frame numbers confusion

Post by Donald duck »

Thanks for the help. A bit more scraping found an extra digit which comes back as 1952 g9. Such a relief
However, the log book shows S2/G9/5715. Any ideas what this refers to?
Tia
Donald duck
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Re: Frame numbers confusion

Post by Donald duck »

I beleive it did originally had a side car. I wonder if it relates to that?
SPRIDDLER
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Re: Frame numbers confusion

Post by SPRIDDLER »

Donald duck wrote: Fri Nov 26, 2021 4:54 pm
However, the log book shows S2/G9/5715. Any ideas what this refers to?

Have you or whoever entered the info on the V5 misread '52' as 'S2' ?
When vehicle records were computerised by the the DVLA (in 1979?) teams of temps were employed to transfer the paper records to the computer and mistakes did occur.
Is the number stamped on the engine 5715? It looks to me like an engine number for a 1952 bike which would be.......

52/G9/5715
52 is how the 1952 year is stamped on the engine.

Donald duck wrote: Fri Nov 26, 2021 5:30 pm I beleive it did originally had a side car. I wonder if it relates to that?
An 'S' for sidecar was never used in the frame or engine number by the factory (who wouldn't know or care whether a sidecar was going to be fitted).
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Donald duck
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Location: Cornwall UK

Re: Frame numbers confusion

Post by Donald duck »

I didn't think of that. Thanks
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