1933 model 12 250 gearbox

Information relating to Matchless and AJS Models built prior to 1939
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Tazmantic
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1933 model 12 250 gearbox

Post by Tazmantic »

So next problem. I believe the gearbox it came with is the correct one and that it’s a sturmey archer though there are no markings on it except the part number on the case that matches the parts list, the case needs some minor repairs so all’s good the only problem is the clutch bits that are in the box and I think these are correct too (though a couple of bits are missing) but the issue here is the hub taper is too big for the shaft :headbang: I’m thinking I might be able to make a tapered sleeve as I’m thinking the chances of finding another is less than slim as I don’t know what make it is :roll:
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Rob Harknett
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Re: 1933 model 12 250 gearbox

Post by Rob Harknett »

It would help if the gearbox number was given. It will tell me its year and model.
Tazmantic
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Re: 1933 model 12 250 gearbox

Post by Tazmantic »

The only numbers I can find are the casting numbers DIV30C and in the pic below
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Rob Harknett
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Re: 1933 model 12 250 gearbox

Post by Rob Harknett »

Tazmantic wrote: Thu Mar 31, 2022 2:10 pm The only numbers I can find are the casting numbers DIV30C and in the pic below
ah.... sorry I forgot its an AMC AJS.
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Re: 1933 model 12 250 gearbox

Post by Tazmantic »

Rob Harknett wrote: Thu Mar 31, 2022 3:56 pm
Tazmantic wrote: Thu Mar 31, 2022 2:10 pm The only numbers I can find are the casting numbers DIV30C and in the pic below
ah.... sorry I forgot its an AMC AJS.
Sorry to be stupid but an AMC AJS ?
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clive
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Re: 1933 model 12 250 gearbox

Post by clive »

Matchless took over AJS in 1931. Machines made before that were real AJS those after less so. :twisted:
As AMC was not founded til 1938 your bike should perhaps more accurately be called a Matchless AJS.
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Tazmantic
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Re: 1933 model 12 250 gearbox

Post by Tazmantic »

clive wrote: Thu Mar 31, 2022 5:44 pm Matchless took over AJS in 1931. Machines made before that were real AJS those after less so. :twisted:
As AMC was not founded til 1938 your bike should perhaps more accurately be called a Matchless AJS.
Or a bitsa :rofl: sorry I didnt realise AMC took over that early, I presumed (once again wrongly) it was much later...

So this gearbox is a matchless, ajs, amc, sturmey archer then :rofl:

I definitely have no hope identifying it then :headbang: :rofl:
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SPRIDDLER
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Re: 1933 model 12 250 gearbox

Post by SPRIDDLER »

Have you seen the Sturmey Archer info in the Archives?
I haven't looked at the articles but there may be something of use there:

http://archives.jampot.dk/technical/Tra ... ey_Archer/
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Tazmantic
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Re: 1933 model 12 250 gearbox

Post by Tazmantic »

SPRIDDLER wrote: Thu Mar 31, 2022 7:34 pm Have you seen the Sturmey Archer info in the Archives?
I haven't looked at the articles but there may be something of use there:

http://archives.jampot.dk/technical/Tra ... ey_Archer/
Thank you think mine is just classed as just a 4 speed
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Tazmantic
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Re: 1933 model 12 250 gearbox

Post by Tazmantic »

doing a bit more searching I'm thinking the clutch hub may be for a 33/A2 as it has the same drawing number DIV24 (but part number 1246 not 1180) and says

"clutch centre tapered with slots 17/32" deep" once again I cant see a number on the part
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