S12?

Information relating to Matchless and AJS Models built prior to 1939
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OllyO
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S12?

Post by OllyO »

Hi folks, this is my first post here. I recently aquired a frame that I believe is a 1932 S12 250cc, can anyone confirm this? Frame no R136726. Here's a pic;

Image
SPRIDDLER
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Re: S12?

Post by SPRIDDLER »

Welcome, Olly.
More knowledgeable folk than me will no doubt be along to contradict me, but here's the Parts List for a 1931 S12 in which the frame illustration looks to be the same* as yours. See page 111 on the Parts List here:

http://archives.jampot.dk/book/Spares_l ... 10_S11.pdf

*Later.......
Hmm, I have to contradict myself now as having studied the link more carefully your frame and the 1931 frame illustrated in the S12 Parts List don't seem at all the same.
'There is a tide in the affairs of men
Which taken at the flood............'
OllyO
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Re: S12?

Post by OllyO »

Cheers for the link, yes it does seem to be quite different. However this S12 appears to be the same frame (and year) as mine;

http://www.bike4sale.co/detail/FcLFuVme ... L-S12-1931

Can anyone tell me if there is a supplier of AJS parts that might be able to help me with any missing parts?
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clive
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Re: S12?

Post by clive »

This frame looks very like the one on my 1928 K12 (250 sidevalve). It certainly looks to be earlier than a 1932 machine which would have a saddle tank, whereas I think this frame is for an underslung tank. A 1932 machine would have no longer been made by the A.J.Stevens and this could have changed the frame layout. Rob H do you have a view?
clive
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Rob Harknett
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Re: S12?

Post by Rob Harknett »

It is earlier Clive. Note the frame prefix R that's 1930. ( 1929 = M. 1932 = S. 1932 =T. ) Note the model 12 was introduced as a 250 SV 1928 It changed to an OHV engine 1930. 1932 would had been a bit of a mixture AJS of Wolverhampton and AMC. the 1932 model year having been started production Sept 1st 1931. Probably why the T Wolverhampton AJS year code prefix was kept. Letter code was dropped in 1933 when the first two digits of the year prefixed the engine number.
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Rob Harknett
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Re: S12?

Post by Rob Harknett »

There is a 1932 parts list, which is actually a list of parts AMC held at the time they took over AJS. Not many parts available then ( 1932 ) 2015 used parts will have to be found at auto jumbles or made. Some parts have been made by owners and others. Best way to source parts is join the club and find your way about from other owners etc.
OllyO
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Re: S12?

Post by OllyO »

Thanks all for your thoughts on this, it makes very interesting reading. Are we thinking that this might be the model?

https://www.bonhams.com/auctions/18362/lot/31/

It certainly shares the 'R' prefix and appears to have a very similar frame.
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Rob Harknett
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Re: S12?

Post by Rob Harknett »

If you want to see a picture of a 1930 model 12 ( R12 ) look at one in a 1930 sales cat. Do not pay too much attention to later pictures that may be wrong. You are sure to find something not correct that's for sure. Frame engine and gearbox numbers all matched on 1930 AJS. Your frame has a 6 digit number, correct. . So how come the Bonhams bike engine number only has 4 ??? I think you may be feeling before you spend too much money or make mistakes, it may be worth joining the club. Quote. It certainly shares the R prefix ??? Are you really 100% sure of that via your knowledge of the year/model.
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