English Barr & Stroud sliding engine 350cc from 1922. This is a 350cc 4 stroke engine without valves but with an internal moving jacket that releases the intake and exhaust opening in due time. These engines were known to be fast and quiet. Rare engine that has been built in several brands. There are 90 delivered to Germany to build in a German engine of the brand Racer.
Barr & Stroud
Sleeve engine 350cc
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