BSA Singles: C15 vs B40

The BSA C15 and B40 are famously long-lived, robust old bikes. But which is better? John Blackburn has owned both… BSA singles often appear in RealClassic and in Paul Henshaw’s article on the BSA B40 in RC213 he mentions that ‘the B40 offers more of everything for the same size and style of machine as the C15, but with larger…