classic motorcycle forum

Motorcycle Discussions => British Bikes => Topic started by: pulhamdown on February 11, 2010, 08:51:35 PM

Title: BSA S27 chassis number
Post by: pulhamdown on February 11, 2010, 08:51:35 PM

Hi.  I`ve recently acquired a 1927 BSA S27.  Can anyone tell me where the chassis number is stamped on the frame.  I`ve had a good look, but no luck yet.  There`s a fair bit of tape holding cables, wires etc, which could be hiding the number.

Title: Re: BSA S27 chassis number
Post by: Revband on February 12, 2010, 10:03:39 AM

BSA usually stamp the frame number on the headstock, if the bike has had a replacement frame in the distant past then the frame would have been supplied unstamped.

Title: Re: BSA S27 chassis number
Post by: Goldy on February 12, 2010, 12:49:47 PM

If you look on the BSA owners web site you will see the sort of number that you should be looking for. all the best.                         http://www.bsaownersclub.co.uk/Engine_Frame_Listing.html     

Title: Re: BSA S27 chassis number
Post by: pulhamdown on February 12, 2010, 05:10:34 PM

Thanks.  I know what the number should be, it`s just locating it.  At least I have narrowed down the places to look - thanks.

Title: Re: BSA S27 chassis number
Post by: pulhamdown on February 13, 2010, 05:53:32 PM

Hi.  I`ve now found the chassis number stamped on the downtube just under the seat on the nearside.  It was hidden by a battery box which had been clamped onto the down tube.
While checking the BSA owners club website, I discovered an error - they had listed the run of chassis / engine numbers which included mine as 4.98, instead of 4.93.  They`ve told me this will corrected shortly.  Thanks for your help.