1935 VINCENT COMET RUNNING GEAR
The Vincent Comet had frame similar in layout to the V-twin Vincent Black Shadow which included Vincent’s proprietary cantilever rear suspension and Vincent’s Girdraulic forks up front. Also typical of Vincent motorcycles, the Comet had two Single Leading-Shoe (SLS) front drum brakes, one on each side.
COMET ENGINE DESIGN
The Vincent Comet engine was an air-cooled 499cc OHV single with its camshaft set high in the crankcases. Both the cylinder block and cylinder head were made of aluminum alloy with a cast iron cylinder liner. The compression ratio was 7.3:1. These engines included a very unique valve arrangement with two valve guides on each valve with the forked rocker arms acting on that portion of the valves that laid between the two guides. This gave the valves more support and a much straighter path. The Comet single served as the basis for the V-twin engine in the Vincent Black Shadow, they just doubled everything. The gearbox was a Burman BAP 4-speed.
1935 Vincent Comet SPECIFICATIONS
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Series Engine type Displacement Bore & Stroke Compression Carburetor Ignition Engine output Charging Primary drive Clutch Gearbox Final drive Chassis type Suspension, front Suspension, rear Brake, front Brake,rear Tire, front Tire, rear Wheelbase Seat height Weight Top speed |
A Air-cooled OHV single 499 cc 84mm X 90mm 6.8:1 Amal 1-1/8″ 6-volt Lucas magneto 28 bhp @ 5,800 rpm 50-watt Miller dynamo Chain Multi-plate, wet Burman BAP 4-speed, right-foot shift Chain Oil-bearing, engine as stressed member Vincent Girdraulic girder forks Cantilever 2X SLS drums 1X SLS drum 3.00″ X 20″ 3.50″ X 19″ 55.75″ 31.0″ 390 lbs dry; 415 lbs curb 90 mph |
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