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BSA Motorcycles

BSA 1920 770cc Twin Conrod

BSA-1920-770cc-6hp-TMC-Conrod.jpg
One ot the side-by-side connecting-rods of the 1920 6 h.p. B.S.A., together with the crank pin, showing the twin roller races
Article: BSA 1920 770cc 6hp Twin
Credit: The Motor Cycle