The Velocette KTT Mk VI, KTT Mk VII, and KTT Mk VIII are a series of motorcycles that were produced between 1935 and 1950. They have a four stroke, single cylinder, OHC engine with a capacity of 348.4 cc and a compression ratio of 7.8:1. The bikes are air-cooled and use a dry sump lubrication system. They have a single chrome exhaust and an Amal carburetor. The ignition is a bobine and the bikes are started with a kick start. The KTT Mk VIII has a maximum power output of 25.7 kW / 35 hp @ 5800 rpm. The clutch is a wet multi-plate and the transmission is four-speed with foot-operated controls. The final drive is a chain. The single cradle frame has a Webb fork with two friction dampers for the front suspension. The KTT Mk VIII also has a swingarm with two shock absorbers for the rear suspension. The front and rear brakes are both 7 in. magnesium drums with a single leading shoe. The fuel capacity is 11.4 L / 4 US gal and the dry weight is 125 kg / 275 lbs. The maximum speed of the KTT Mk VIII is 185 km/h / 115 mph. The bikes come in black with gold pin striping.
Technical specifications:
Make Model: Velocette KTT Mk VI, KTT Mk VII, KTT Mk VIII
| Year | KTT Mk VI: 1935 KTT Mk VII: 1938 KTT Mk VIII: 1938 – 50 |
|---|---|
| Engine | Four stroke, single cylinder, OHC |
| Capacity | 348.4 cc / 21.3 cub in |
| Bore x Stroke | 74 x 81 mm |
| Compression Ratio | 7.8:1 |
| Cooling System | Air cooled |
| Lubrication | Dry sump |
| Exhaust | Single, chrome |
| Carburetor | Amal |
| Ignition | Bobine |
| Starting | Kick start |
| Max Power | 25.7 kW / 35 hp @ 5800 rpm (Mk VIII) |
| Clutch | Wet multi-plate |
| Transmission | 4 Speed, foot operated |
| Final Drive | Chain |
| Frame | Single cradle frame |
| Front Suspension | Webb fork with two friction dampers |
| Rear Suspension | KTT Mk VI & VII: None, spring loaded seat KTT Mk VIII: Swingarm with 2 shock absorbers, Oleo |
| Front Brakes | 7 in. magnesium drums with single leading shoe |
| Rear Brakes | 7 in. magnesium drums with single leading shoe |
| Front Wheel | WM1 x 21 in. (Mk VIII) |
| Rear Wheel | WM2 x 19 in. (Mk VIII) |
| Fuel Capacity | 11.4 L / 4 US gal |
| Dry Weight | 125 kg / 275 lbs |
| Maximum Speed | 185 km/h / 115 mph (Mk VIII) |
| Colours | Black with gold pin striping |
| Source | Wikipedia, Bonhams |
