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| 1965 DMW Typhoon 500 |
Don't see many big, 2 stroke motorcycle engines. DMW Motorcycles was a British motorcycle manufacturer. DMW was founded in 1940. Over the next 30 years they produced about 15,000 motorcycles. It was noted for trials and racing machines and many DMWs can still be seen at UK sporting events.
Bonham's talks about the creation of this 2 stroke engine:
Spurred on by Metal Profile's enthusiastic boss, Harold Knock, DMW created its 500 racer by the simple expedient of joining two Hornet engines together, an arrangement that afforded the prospect of 60-70bhp at a time when a good Manx Norton managed around 52 horsepower. A pair of Alpha crankcase assemblies was used, sandwiching a special straight-cut primary transmission. The latter consisted of a jackshaft in an oil bath, from which drive was taken to a secondary transmission and thence to the Albion five-speed gearbox via a Royal Enfield Interceptor clutch. Ignition contact breakers were mounted at one end of the jackshaft but were later moved to the crankshaft end.
This bike had problems: vibration and weak brakes. People fiddled with it, but it never became the world beater they were hoping for,
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| 1965 DMW 500cc Typhoon Engine |
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