The Velocette Thruxton Endurance was a motorcycle produced in 1969, with only 121 units produced. It had a 499cc four-stroke, single cylinder, OHV engine with a compression ratio of 8:1 and a maximum power of 25kW/34hp at 6200 rpm. The motorcycle had a 4-speed constant mesh, close ratio transmission and a chain final drive. It also had a tubular cradle frame and a rear sub-frame that was detachable. The dimensions of the bike were 2260 mm in length, 760 mm in width and 1130 mm in height, with a wheelbase of 1365 mm and ground clearance of 165 mm. The motorcycle had a telescopic fork with hydraulic damping and an offset wheel spindle for its front suspension, and Woodhead-Monroe springs with hydraulic damping for its rear suspension. The bike had front and rear drum brakes of 7 x 1 in. and wheels of WM1 x 21 in. and WM3 x 19 in. for the front and rear wheels respectively. The front and rear tires were Trials Universals of 3.00 x 21 and 4.00 x 19. The fuel capacity was 11.35 L or 3 US gallons, and the dry weight was 170 kg or 375 lbs. The bike was produced in black with a silver tank. The ignition was with Miller D6 with auto volt regulation and it had a 6V 60W battery. It could be started with a kick start, and had a seat height of 838 mm. The motorcycle used an Amal 10TT9 Monobloc carburetor and a single exhaust with a Champion N3 or N4 spark plug.
Technical specifications:
Make Model: Velocette Thruxton Endurance
| Year | 1969 |
|---|---|
| Production | 121 units |
| Engine | Four stroke, single cylinder, OHV |
| Capacity | 499 cc / 30.5 cub in |
| Bore x Stroke | 86 x 86 mm |
| Compression Ratio | 8:1 |
| Cooling System | Air cooled |
| Lubrication | Dry sump |
| Carburetor | Amal 10TT9 Monobloc |
| Exhaust | Single |
| Spark Plug | Champion N3 or N4 |
| Ignition | Miller D6 with auto volt regulation |
| Battery | 6V 60W |
| Starting | Kick start |
| Max Power | 25 kW / 34 hp @ 6200 rpm |
| Transmission | 4 Speed constant mesh, close ratio |
| Gear Ratios | 1st 11.2 / 2nd 7.7 / 3rd 5.87 / 4th 4.87:1 |
| Final Drive | Chain |
| Frame | Tubular cradle, rear sub-frame detachable |
| Dimensions | Length: 2260 mm / 89.0 in Width: 760 mm / 30.0 in Height: 1130 mm / 44.5 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 damping and an offset wheel spindle |
| Rear Suspension | Woodhead-Monroe springs with hydraulic damping, later Armstrong and Girling |
| Front Brakes | 7 x 1 in., drum |
| Rear Brakes | 7 x 1 in., drum |
| Front Wheel | WM1 x 21 in |
| Rear Wheel | WM3 x 19 in |
| Front Tyre | 3.00 x 21 Trials Universal |
| Rear Tyre | 4.00 x 19 Trials Universal |
| Dry Weight | 170 kg / 375 lbs |
| Fuel Capacity | 11.35 L / 3 US gal |
| Colours | Black with silver tank |
| Source | Bonhams |
