HP @ 2500 RPM
Model A was manufactured by BSA Ltd at the Redditch Works England in C1956
The significance of this engine is, it is an alloy crankcase engine making it much lighter than the cast iron engines. It also retains the heavy flywheel of its predecessors and external magneto ignition. It was in this era that Villiers developed what was known as the Villiers type flywheel magneto. This development was the fitting of magneto components in under a hollow and lighter flywheel, making engines more compact. It was the dawn of the modern engine. With time the Villiers development took hold with engine manufactures. This spelt the end for engines like the BSA model A.