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.

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