 | |
| Manufacturer | Triumph Engineering |
|---|---|
| Production | 1959–1975 649 cc |
| Engine | 649 cc (39.6 cu in) air-cooled, ohv 360° parallel-twin |
| Bore / stroke | 71 mm × 82 mm (2.8 in × 3.2 in) |
| Compression ratio | 8.5:1 |
| Top speed | 108 mph (174 km/h)[1] |
| Power | 46 bhp (34 kW) @ 6,500 rpm[1] |
| Torque | 37.8 lb⋅ft (51 N⋅m) @ 5,500 rpm[2] |
| Ignition type | Lucas K2F magneto,[1] battery and coil from 1964[3] |
| Transmission | 4-speed gearbox (and later 5-speed) with chain final drive |
| Tyres | 3.25x19 front, 4.00x18 rear,[1] 3.25x18 and 3.50x18 from 1964[3] |
| Wheelbase | 55 in (1,400 mm) |
| Seat height | 30.5 in (770 mm) |
| Weight | 402 lb (182 kg) (wet) |
The Triumph Bonneville T120 is a motorcycle originally made by Triumph Engineering from 1959 to 1975. It was the first model of the Bonneville series, which was continued by Triumph Motorcycles Ltd. The T120 was discontinued in favour of the larger 750 cc T140 in the early 1970s.[4]
- ^ a b c d Triumph T120R road test by Bruce Main-Smith. Motorcycling, June 1961. Reprinted in Walnecks, Vol.307, Iss 9, September 2009, pp.104-106. Accessed 26 December 2019
- ^ A sense of proportion: Assessing engines with a slide rule, by LJK Setright. Motorcycle Sport, October 1964, pp374-376, 386. Accessed 26 December 2019
- ^ a b Bonneville road test by Bill Lawless. Motorcycle Mechanics, May 1964, pp.36-37, 60. Accessed 26 December 2019
- ^ Kemp, Andrew; De Cet (2004). Classic British Bikes. Mirco. Bookmart Ltd. ISBN 978-1-86147-136-9.