Hi Chicago. Felt I had to chip in with my 2pence worth. Your bike obviously started life as an A10 (the highest percentage of all plunger bikes were A10) It is a 1954 YEAR MODEL which was manufactured in 1953. The factory started production of the next years model when they restarted after the summer break/shutdown which is why the number is over BA7.S. 8950. (I have a 1954 year model A7 Star-Twin, frame number BA7S 1162* that was despatched late 1953) The factory despatch records are the only way to tell which model the bike started life as, as the same frame number sequences were used for the standard A7, The A7 Star-Twin and the A10. The UK reg number is an age related re-issue (which often use Scottish registrations) The original reg number has either been lost or sold off. You would be a brave man to accuse Annice of being wrong as her Knowledge of the factory records is amazing! So to sum up, You have a 1954 model year A10, despateched in 1953 that is currently fitted with an earlier A7 engine, sadly not the Star-Twin you were hopeing for. Regards, Spanersc
bsa certainly didnt make things easy to work out,
"You would be a brave man to accuse Annice of being wrong as her Knowledge of the factory records is amazing"
im sorry it wasnt quite clear on my post, i wasnt saying annice was wrong, i was saying
maybe the bsaoc was wrong saying it was a 1953 .
"The UK reg number is an age related re-issue (which often use Scottish registrations) The original reg number has either been lost or sold off"
nice one, please dont try and sugar coat it for me
, if i said i wasnt a little dissapointed i would be lying. but at the end off the day i'm still happy with the bike and at least i didnt pay a fortune for it and i'm sure when i get to use it all this wont matter at all. cheers for the info fella, all the best, chicago