BSA 1959 BSA A10. I really dig that cut-open exhaust! Loud pipes saved lives even back then! How does one tell an A10 from an A7 in a blurry pic?
Sunbar's first thumbnail is clear enough, nzc, to show Graham Stark riding **R? 720, as well as the Matchless badge, tank lining, AMC forks and trade mark megaphone silencers - either a G11 or G12. Those silencers, standard for many years, certainly on larger Matchless models, were noisy only when the rider was twisting the grip some (as one has recounted elsewhere on this Database). My lightened '57 C12 250 was fitted with a similar Matchless megaphone though a rolling road might have revealed, if anything, an adverse effect on performance.
