LINKS
 
Main site you need to visit BSA web Site
Here the way to find out the model of your BSA (from BSAOC site):
All Years up to 1920
1921-1930
1931-1940
1941-1950
1951-1960
Post 1960
And click here for complete info
In this BSA Forum you will found lot of great guys.
Armour Motor Ltd. provide lot of special parts such as a Siamese pipe for exhaust or silencer for AJS, BSA, Ariel, etc. They have no website, so here is the address.
Armour Motor (Bournemouth) Ltd.
784, Wimborne Road, Moordown, Bournemouth BH9 2HS, England
phone: 01202-519409 fax.01202-510671
Magneto (i.e. Lucas) specialist from Netherland: [email protected]