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 .....BSA WORKS DRAWINGS OF 3 AND 4 SPEEED CRANKCASES........

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rexcaunt



Number of posts : 79
Age : 70
Localisation : SUNNY BARWELL
Registration date : 2014-07-31

PostSubject: .....BSA WORKS DRAWINGS OF 3 AND 4 SPEEED CRANKCASES........   Thu Apr 16, 2015 8:37 pm

Hi All,

For our ongoing Bantam development can anyone supply factory drawings or

blueprints of 3 and 4 speed crankcases?

It would be much appreciated!................... Very Happy

Cheers!

Rex
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John Colter



Number of posts : 128
Age : 79
Localisation : West Midlands
Registration date : 2014-10-23

PostSubject: Re: .....BSA WORKS DRAWINGS OF 3 AND 4 SPEEED CRANKCASES........   Thu Apr 23, 2015 5:33 am

I found this request from Rex in the "unanswered posts" section. I am posting a response, simply to keep it current, in the hope that someone may be able to help.

I have no experience of the 175cc, or the four speed versions of the Bantam. I would imagine the crankcases were very similar throughout the whole of the Bantam's production run, any differences being to do with the change from three to four gears; possibly different main bearing/seal sizes as the motors were made more powerful; cylinder stud spacing/crankcase mouth enlargements; detail differences in the lubrication of the main bearings? Moving the points over to the primary chain case may have necessitated changes to the crankcases, too.

Have I missed anything Question
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.....BSA WORKS DRAWINGS OF 3 AND 4 SPEEED CRANKCASES........
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