| MODEL | VELOCETTE VIPER CLUBMAN 1960 - 1968 |
| Year | 1960 - 1968 |
| Engine Type | Four stroke, single cylinder |
| Displacement / Capacity | 349 cc / 21.3 cu in |
| Bore X Stroke | 72 x 86 mm |
| Compression Ratio | 9.3:1 |
| Cooling System | Air cooled |
| Max Power | 25 kW / 28 hp @ 7000 rpm |
| Max Torque | — |
| Ignition | Miller type D6 with automatic volt regulation |
| Induction | Amal TT monobloc |
| Start System | Kick start |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 4 Speed constant mesh, close ratio |
| Clutch | Dry, three-plate |
| Final Drive | Chain |
| 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 Brakes | 7.5 x 1.5 in drum |
| Rear Brakes | 7 x 1 in drum |
| DIMENSION SPECS | |
| Overall Length | 2130 mm / 84.0 in |
| Overall Width | 700 mm / 27.5 in |
| Overall Height | 990 mm / 39.0 in |
| Seat Height | 775 mm / 30.5 in |
| Wheelbase | 1365 mm / 53.75 in |
| Ground Clearance | — |
| Dry Weight | 181 kg / 399 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.25 x 19 in, ribbed |
| Rear Tyre | 3.25 x 19 in, studded |
| FUEL SYSTEM | |
| Fuel Capacity | 19.3 Litres / 5.1 US gal |
| Fuel Consumption | — |
| Top Speed | 176 km/h / 110 mph (geared for, at 6500 rpm) |
The Clubman was the racing-flavoured Viper offered from 1960, with TT carburettors, a racing magneto, close-ratio gearbox and higher compression. Fibreglass enclosure gave way to polished cases, with rearsets, lowered bars and a steering damper. A tuned Viper made a 24-hour record attempt at Montlhery in 1963, averaging a little over 100 mph.
