1975 Norton Commando
Classic Cars, Trucks, and Motorcycles - History, Pictures, and Information
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The Commando was the last of the Norton parallel-twin machines, and many consider it to be the best of the classic British bikes.
Engineer Bernard Hooper devised a system where engine and frame were rubber mounted, with the swingarm mounting to the engine casings. The rear gearbox cradle mount was cushioned in rubber, as were other engine attachment points. These rubber mountings, patented and trademarked as 'Isolastics', isolated the rider from most engine vibration. while still providing a sporting ride.