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I believe the Model 50 (350cc) and the ES2 (500cc) were identical other than barrel, piston, head and carbMy engine is still a 350 bottom end and barrel. The larger bore BMW barrel combined with the 350 shorter stroke gives 500cc - very similar to BSA Goldstar bore/strokeThe featherbed singles frame is, however, different from the twins version. Different mounting lugs in front/below engineCheersRob
I believe the Model 50 (350cc) and the ES2 (500cc) were identical other than barrel, piston, head and carb
My engine is still a 350 bottom end and barrel. The larger bore BMW barrel combined with the 350 shorter stroke gives 500cc - very similar to BSA Goldstar bore/stroke
The featherbed singles frame is, however, different from the twins version. Different mounting lugs in front/below engine
Cheers
Rob
