Triumph T 120 Bonneville (1960-61)

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The Triumph T120 Bonneville 650 motorcycle was produced from 1960-61. It is a four stroke, parallel twin engine with a capacity of 649 cc / 39.6 cu in. The compression ratio is 8.5:1 and the cooling system is air cooled. The induction uses 2 Amal 1 – 1/6″ carburetors, and the ignition is Lucas magneto. The motorcycle has a kick start, with a maximum power of 34 kW / 46 hp @ 6700 rpm. The clutch is wet and multiplate, while the transmission has four speeds and is constant mesh. The final drive is a chain with 101 links, and the gear ratios are 1st 11.90 / 2nd 8.25 / 3rd 5.81 / 4th 4.88:1. The frame is made of twin steel downtubes, and the front suspension is a telescopic fork with hydraulic damping. The rear suspension is a swingarm with twin Girling dampers. The front and rear brakes are drum brakes with the front being 8″ SLS and the rear being 7″ SLS. The front and rear tires are Dunlop brand with sizes 3.25 x 19 and 4.00 x 18, respectively. The wheelbase measures 1400 mm / 55.25 in, and the seat height is 770 mm / 30.5 in. The ground clearance is 127 mm / 5.0 in, and the dry weight is 183 kg / 403 lbs. The fuel capacity is 13.6 L / 3.6 US gal / 3 Imp gal for US models and 18 L / 4.8 US gal / 4 Imp gal for UK and other export models.

Technische Daten:

Marke Modell: Triumph T120 Bonneville 650

Year: 1960 – 61


Motor: Viertakt, Parallel-Twin, OHV
Hubraum: 649 cm³ / 39,6 cu in
Bohrung x Hub: 71 x 82 mm
Verdichtungsverhältnis: 8,5:1
Kühlsystem: Luftgekühlt
Ansaugung: 2 x Amal 1 - 1/6″ Vergaser
Ignition: Lucas magneto
Start: Kick
Max Power: 34 kW / 46 hp @ 6700 rpm
Kupplung: Nass, Mehrscheibenkupplung
Getriebe: 4-Gang, konstanter Eingriff
Final Drive: Chain, 101 links
Gear Ratios: 1st 11.90 / 2nd 8.25 / 3rd 5.81 / 4th 4.88:1
Frame: Twin steel downtubes
Vordere Federung: Teleskopgabel, hydraulische Dämpfung

Hintere Aufhängung: Schwinge, zwei Girling-Dämpfer
Vordere Bremsen: 8″ SLS-Trommel
Hintere Bremsen: 7″ SLS-Trommel
Front Tyre: 3.25 x 19, Dunlop
Rear Tyre: 4.00 x 18, Dunlop
Wheelbase: 1400 mm / 55.25 in
Seat Height: 770 mm / 30.5 in
Bodenfreiheit: 127 mm / 5.0 in
Trockengewicht: 183 kg / 403 lbs
Kraftstoffkapazität: US: 13,6 L / 3,6 US gal / 3 Imp gal / UK und andere Export: 18 L / 4.8 US gal / 4 Imp gal

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