Triumph T120V 650 B
Triumph T120V 650 B | |
Manufacturer | |
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Production | 1974 |
Engine | Four stroke, parallel twin, OHV |
Compression ratio | 9.0:1 |
Ignition | Battery, coil |
Transmission | 4 Speed |
Suspension | Front: Telescopic forks Rear: Swinging arm, dual shocks |
Brakes | Front: Drum Rear: Drum |
Front Tire | 3.25 -19 |
Rear Tire | 4.00 -18 |
Weight | 181 kg / 399 lbs (wet) |
Oil Capacity | 3.4 L / 7.2 US pt / 6 Imp pt |
Fuel Capacity | 16L / 4.2 US gal / 3.5 Imp gal |
Manuals | Service Manual |
Engine[edit | edit source]
The engine was a Air cooled cooled Four stroke, parallel twin, OHV. The engine featured a 9.0:1 compression ratio.
Drive[edit | edit source]
Power was moderated via the Multi-disc, wet.
Chassis[edit | edit source]
It came with a 3.25 -19 front tire and a 4.00 -18 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Swinging arm, dual shocks. The T120V 650 B was fitted with a 16L / 4.2 US gal / 3.5 Imp gal fuel tank.
Photos[edit | edit source]
Overview[edit | edit source]
Triumph
Bonneville 650 T120V
T120 Export models:
T120R Export model intended for the US market with in
varying years, varying differences.
T120V - 5-speed model available 1972.
T120C Competition model with high-level exhaust pipes.
T120TT 1964 model of the T120C for the US East Coast. In 1968 Evel Knievel jumped the Caesar's Palace Casino fountains on a Bonneville T120TT, and was seriously injured breaking many bones after losing control on landing
T120RT A special 750 cc model which had Routt 750cc cylinder kits installed in America by Triumph to permit them to be used in American Motorcycle Association production-based racing events. The kits were installed on new T120R models while still crated. To qualify, motorcycles had to be made and sold to the public in the same form as they would be raced. Triumph had to produce and sell at least 200 of them before they qualified, and although the exact number sold is not recorded they did meet the requirement. The T was stamped separately on the engine cases in America after the stock T120R when the modifications were made, the frames were not stamped.
T120RV - The 5-speed is generally considered to have been availableand was advertised as suchstarting in 1972 with the T120V. However, a small pre-production run of 5-speeds were made in June 1971 only, and sold as '71 models. They were externally identical to their '71 T120R 4-speed counterparts, and did not carry any "V" decals such as the 1972 5-speeds displayed on their side panels. They were factory (not dealer) modified T120R models, so their engines/frames/and titles are designated T120RV,with the V being stamped separately when the transmissions were installed. These early factory Triumph 5-speeds are not be confused with the Quaife 5-speeds that were listed as stocked for sale by Triumph dealers in 1970 to qualify for AMA purposes (the parts "had to be available from Triumph"). The first and final T120RV ratios in 1971 were the same as the 4-speed model, making it a matter of closer ratios, unlike later 5-speeds. These 5-Speeds were not advertised, were not available as an option, and could not be orderedas the few manufactured were simply distributed individually to selected Triumph dealers and sold by word of mouth.
Make Model | Triumph Bonneville 650 T120V |
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Year | 1974 |
Engine Type | Four stroke, parallel twin, OHV |
Displacement | 649 cc / 39.6 cu in |
Bore X Stroke | 71 x 82 mm |
Compression | 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 Tire | 3.25 -19 |
Rear Tire | 4.00 -18 |
Fuel Capacity | 16L / 4.2 US gal / 3.5 Imp gal |
Wet Weight | 181 kg / 399 lbs |