BSA Motorcycles 1930s

BSA 250 o.h.v. C11 Engine 1940

A broken-open engine sketch Of the 250 c.c. o.h.v. engine fitted to the model C11. Observe the cast-in push-rod channels, the crossed rods, the simple timing gear, and the skew-gear drive operating the contact-breaker unit.

BSA 1940 Models

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