The Vincent Comet was designed and built at the Vincent works in Great North Road, Stevenage, Hertfordshire, England. It was one of four 499 cc single models.
source/image(PrtSc): classic-motorcycle.com
An unusual feature of the valve design for these motors was the double valve guides, and the attachment of the forked rocker arm to a shoulder between the guides, to eliminate side forces on the valve stem and ensure maximum valve life under racing conditions.
The 499 cc single-cylinder, high-camshaft OHV, air-cooled Vincent engine had a light alloy barrel and cylinder head with a cast-iron liner, and a ‘backbone’ type combined frame and oil tank.
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The engine acting as a stressed member of the frame, and most other components in common with the post-war twin-cylinder models.This fast and amazing bike has been built for a real sport man.
