Segment: Clasic
Production years: 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968
Introduced in October 1955, the single-cylinder Viper was developed from the 349cc Velocette MAC. Designed by Charles Udall, the Viper's 349cc engine had a bi-metal cylinder with a cast iron liner, high compression piston and a light alloy cylinder head. Using the same bottom end as its sister bike the 500cc Velocette Venom, the Viper had a lot of chrome plating and was offered in a choice of black or "willow green" paintwork. The Viper was also ahead of its time in being one of the first to have glass fibre enclosure panels from 1962. These panels proved unpopular with the traditional buyers of Velocette singles, as they extended from the front of the engine, level with the top of the crankcase, to the rear pillion footrests.
VELOCETTE VIPER 1956-1968
VELOCETTE VIPER 350
| engine specs | Type: | Single cylinder, 4-stroke, Air-cooled | Displacement: | 349 cm3 | Bore X Stroke: | 2.8x3.4 in OR 71 mm | Compression Ratio: | 8.0:1 | Horsepower: | 28/7000 KW(hp)/RPM | Torque: | 0/- lb-ft/RPM OR 0 Nm/RPM | Fuel System: | Carburetor |
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| transmission specs | Gearbox: | 4-Speed constant mesh, close ratio | Clutch: | Dry, three-plate | Primary Drive: | - | Final Drive: | Chain |
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| chassis specs | Frame: | - | Front Suspension: | Telescopic fork with hydraulic compression and rebound damping | Rear Suspension: | Woodhead-Monroe springs with hydraulic damping, later Armstrong and Girling, adjustable | Front Brake: | Drum | Rear Brake: | Drum |
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| dimension specs | Overall Length: | - | Overall Width: | - | Seat Height: | - | Wheelbase: | 53.3 in OR 1354 mm | Ground Clearance: | - | Weight: | 364 lbs OR 165 kg | Fuel Capacity: | 3.6 gallons OR 13.6 L |
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| tyres specs | Front: | 3.25 x 19" | Rear: | 3.25 x 19" |
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| power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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