Allen Museum Collection

Herb Harris Vincent

1951 Vincent Black Shadow

by Herb Harris
Sold October 1999

This superb example of the marque was recently rebuilt by Dick Busby to near catalog specification - the departure from original being the inclusion of a V2 Ducati style clutch, in the interests of roadability. The machine, featured in a four page article in the November 1998 issue of Cycle World, has original carburettors, leather seat, Bell magneto and correct wheels. It runs very strongly indeed.
1951 Vincent Black Shadow


VINCENT HRD - Series C Black Shadow


Make: Vincent HRD
Model: Series C Black Shadow
Engine: 998 cc (84 x 90 mm bore and stroke) 50° OHV V Twin, 7.3:1 CR, polished conrods
Carburetor: 2 x 1.125 inch type 29 Amals
Ignition: Lucas Magneto ('55 models had Kettering ignition)
Electrics: 6v 45w dynamo
Lubrication: Dry sump, 3 US quarts
Gearbox: Burman 4 speed, triplex chain primary, wet multiplate clutch
Final Drive: 530 chain, 46/21 sprockets
Tyres: 3 x 20 in front, 3.50 x 19 in rear
Wheels Front: 1.65 x 20 in.steel rim; Rear: 1.65 x 19 in.steel rim.
Frame: Brazed lug duplex tubular cradle. Cantilever rear springing
Front forks: Vincent Girdraulic forks, 3" travel
Brakes: Twin drums, 7 in diameter in front and rear, single leading shoe 7/8" wide.
Weight: 455 lb - 206 kg [Wet - 500 lb (227kg)]
Wheelbase: 56.5 in. (1435mm)
Seat height: 32.5 in. (826mm)
Performance: 125 mph / 201 km/h - 55 bhp at 5500 rpm
Fuel Capacity 3.5 gallons / 16 litres (Other sources suggest 5 gal - 19litres)
Manufacturer: The Vincent-HRD Co. Ltd., Great North Road, Stevenage, Herts

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