Number of posts : 79
Age : 72
Localisation : SUNNY BARWELL
Registration date : 2014-07-31
|Subject: .....BSA WORKS DRAWINGS OF 3 AND 4 SPEEED CRANKCASES........ Thu Apr 16, 2015 8:37 pm|| |
For our ongoing Bantam development can anyone supply factory drawings or
blueprints of 3 and 4 speed crankcases?
It would be much appreciated!...................
Number of posts : 128
Age : 81
Localisation : West Midlands
Registration date : 2014-10-23
|Subject: 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