The Velocette Viper Scrambler was a motorcycle manufactured from 1958-68. It had a four-stroke single cylinder engine with a capacity of 349cc and a compression ratio of 9.3:1. The bike featured a dry sump lubrication system, an Amal TT monobloc carburetor, and a single, megaphone silencer exhaust. The ignition was powered by a BTH racing magneto and the bike was started with a kick start. The Viper Scrambler was capable of reaching a maximum power of 26 kW / 29 hp @ 7000 rpm. The bike had a dry, three-plate clutch and a 4-speed constant mesh, close ratio, foot-controlled transmission. The final drive was a chain. The bike had dimensions of 2260 mm in length, 890 mm in width, and 1090 mm in height. The Viper Scrambler had a wheelbase of 1365 mm, ground clearance of 165 mm, and a seat height of 838 mm. The suspension on the bike consisted of a telescopic fork with hydraulic compression and rebound damping in the front and Woodhead-Monroe springs with hydraulic damping in the back. The front and rear wheels were 7 x 1 inches in size with light alloy rims and spokes. The front and rear tires measured 3.00 x 21 inches and 4.00 x 19 inches respectively. The bike had a turning radius of 4.9 m and a rake of 27 degrees. Its wet weight was 152 kg and it had a fuel capacity of 11 L. The Velocette Viper Scrambler was available in black/chrome, red/black, and white/black colors.
Technical specifications:
Make Model: Velocette Viper Scrambler
| Year | 1958 – 68 |
|---|---|
| Engine | Four stroke, single cylinder |
| Capacity | 349 cc / 30.5 cub in |
| Bore x Stroke | 72 x 86 mm |
| Compression Ratio | 9.3:1 |
| Cooling System | Air cooled |
| Lubrication | Dry sump |
| Carburetor | Amal TT Monobloc |
| Exhaust | Single, megaphone silencer |
| Spark Plug | KLG FE100 / Champion N3 / NGK B8ES, Lodge 3HLN |
| Battery | 6V |
| Ignition | BTH racing magneto |
| Starting | Kick start |
| Max Power | 26 kW / 29 hp @ 7000 rpm |
| Clutch | Dry, three-plate |
| Transmission | 4 Speed constant mesh, close ratio, foot controlled |
| Gear Ratios | 1st 17.9 / 2nd 12.46 / 3rd 9.5 / 4th 7.85:1 |
| Final Drive | Chain |
| Dimensions | Length: 2260 mm / 89.0 in Width: 890 mm / 34.5 in Height: 1090 mm / 43.0 in. |
| Wheelbase | 1365 mm / 53.75 in |
| Ground Clearance | 165 mm / 6.5 in. |
| Seat Height | 838 mm / 33 in. |
| 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 x 1 in., drum |
| Rear Brakes | 7 x 1 in., drum |
| Wheels | Light alloy rims, spokes |
| Front Wheel | WM1 x 21 |
| Rear Wheel | WM3 x 19 |
| Front Tyre | 3.00 x 21 in |
| Rear Tyre | 4.00 x 19 in |
| Turning Radius | 4.9 m / 16 ft. |
| Rake | 27 degrees |
| Wet Weight | 152 kg / 330 lbs |
| Fuel Capacity | 11 L / 3 US gal |
| Colours | Black/chrome, Red/black, White/black |
