Triumph Bonneville 750 T140 Silver Jubilee (1977)

The Triumph Bonneville 750 T140 Silver Jubilee was produced in 1977 with only 1000 units made. It has a parallel twin, four-stroke engine with two valves per cylinder and a capacity of 744cc. The compression ratio is 7.9:1 and it has 2 x 30mm Amal carburetors for induction. The kick-started engine produces 40.3 kW / 54 hp @ 5000 rpm. The motorcycle has a wet, multiplate clutch and a five-speed transmission with a chain, 106-link final drive. The frame is made of tubular steel with a double front downtube and an oil-bearing large tube backbone. The front suspension is telescopic forks and the rear is a swingarm with Girling shocks that are 3-way spring preload adjustable. It has a single-piston caliper 254mm disc brakes on the front and rear with Dunlop Red Arrow tires, 4.10-19 K91 ribbed on the front and 4.10-18 K91 on the rear. The wheelbase is 1422mm / 56 inches and it weighs 177kg / 390 lbs. The fuel capacity is 12 liters / 3.2 US gal / 2.6 Imp gal with oil capacity at 2.3 L / 4.8 US pt / 4.0 Imp pt. It has a seat height of 813mm / 32 inches and its dimensions are 2220mm in length and 840mm in width.

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Technical specifications:

Make Model: Triumph Bonneville 750 T140V Silver Jubilee

Year: 1977

Production: 1000 Units

Engine: Four stroke, parallel twin, OHV, 2 valves per cylinder

Capacity: 744 cc / 45.4 cu in

Bore x Stroke: 76 x 82 mm

Compression Ratio: 7.9:1

Cooling System: Air cooled

Induction: 2 x 30 mm Amal carburetors

Ignition: Battery / dual coil / dual points / Lucas

Starting: Kick

Max Power: 40.3 kW / 54 hp @ 5000 rpm

Clutch: Wet, multiplate

Transmission: 5 Speed

Final Drive: Chain, 106 links

Gear Ratios: 1st 12.25 / 2nd 8.63 / 3rd 6.58 / 4th 5.59 / 5th 4.70:1

Frame: Tubular steel, double front downtubes, oil bearing large tube backbone

Front Suspension: Telescopic forks

Rear Suspension: Swingarm, Girling shocks, 3-way spring preload adjustable

Front Brakes: Single 254 mm disc, 1 piston caliper

Rear Brakes: Single 254 mm disc, 1 piston caliper

Front Tyre: 4.10-19 K91 ribbed, Dunlop Red Arrow

Rear Tyre: 4.10-18 K91, Dunlop Red Arrow

Rake: 28o

Trail: 109 mm / 4.3 in

Wheelbase: 1422 mm / 56 in

Dimensions: Length: 2220 mm / 87.5 in Width: 840 mm / 33.0 in

Seat Height: 813 mm / 32.0 in

Dry Weight: 177 kg / 390 lbs

Oil Capacity: 2.3 L / 4.8 US pt / 4.0 Imp pt

Fuel Capacity: 12 Litres / 3.2 US gal / 2.6 Imp gal