The Triumph T120V Bonneville (1974) is a vintage motorcycle with a four stroke, parallel twin, OHV engine and a capacity of 649cc. It has a compression ratio of 9.0:1 and cooling system that uses air. The ignition is battery operated and coil powered and the bike starts using a kick. The Bonneville has a 12V alternator for lighting and an oil system that includes a double plunger pump and dry sump. The clutch is a multi-disc, wet model and the bike boasts a maximum power of 37.3 kW / 50 hp @ 7000 rpm and a maximum torque of 52.1 Nm / 5.3 kgf-m / 38.5 lb-ft @ 6000 rpm. The transmission is four speed with a final drive using a chain. The front suspension is telescopic forks and the rear suspension is a swinging arm, dual shocks model. The Bonneville has drum brakes in the front and rear and uses 3.25 -19 and 4.00 -18 tires, respectively. The fuel capacity is 16L / 4.2 US gal / 3.5 Imp gal and the wet weight is 181 kg / 399 lbs. The classic bike has gear ratios of 4th at 4.95, 3rd at 6.14, 2nd at 8.36, and 1st at 12.08.
Technical specifications:
Make Model: Triumph Bonneville 650 T120V
| Year | 1974 |
|---|---|
| Engine | Four stroke, parallel twin, OHV |
| Capacity | 649 cc / 39.6 cu in |
| Bore x Stroke | 71 x 82 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Induction | 2 x 30 mm Amal concentric carburetors |
| Ignition | Battery, coil |
| Starting | Kick |
| Lighting system | 12V alternator |
| Oil system. | Double plunger pump, dry sump |
| Oil capacity | 3.4 L / 7.2 US pt / 6 Imp pt |
| Clutch | Multi-disc, wet |
| Max Power | 37.3 kW / 50 hp @ 7000 rpm |
| Max Toque | 52.1 Nm / 5.3 kgf-m / 38.5 lb-ft @ 6000 rpm |
| Transmission | 4 Speed |
| Final Drive | Chain |
| Gear Ratios | 4th 4.95 / 3rd 6.14 / 2nd 8.36 / 1st 12.08 |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swinging arm, dual shocks |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tyre | 3.25 -19 |
| Rear Tyre | 4.00 -18 |
| Fuel Capacity | 16L / 4.2 US gal / 3.5 Imp gal |
| Wet Weight | 181 kg / 399 lbs |
