Triumph TR7 Tiger (1981)

Posted on by

The Triumph TR7T Tiger Trail was a motorcycle produced in 1981, containing a four stroke, parallel twin cylinder, OHV engine with a capacity of 744cc. The bike had a compression ratio of 7.4:1 and was cooled by air. It utilized an Amal Mkl, 30mm slide type carburetor for induction and Lucas electronic ignition with battery and coils for power. The bike had a maximum power output of 31.3 kW / 42 hp @ 6500 rpm with a maximum torque of 50 Nm / 5.1 kgf-m / 37 ft-lb @ 5000 rpm. It had a 5-speed transmission with a chain final drive and a top speed of 167 km/h / 104 mph. The bike weighed 174 kg / 383 lbs and had a fuel capacity of 10.5 L / 2.8 US gal / 2.3 Imp gal. The front and rear suspension systems included telescopic forks with coil springs and oil damping and a swinging fork controlled by twin Marzocchi units respectively. Additionally, the bike featured a single 10″ disc front brake and a singe 7″ drum rear brake. Its standing 1/4 mile was recorded at 14.2 sec / 147 km/h / 91.3 mph.

Technical specifications:

Make Model: Triumph TR7T Tiger Trail

Year: 1981


Engine: Four stroke, parallel twin cylinder, OHV
Capacity: 744 cc / 45.4 cu in
Bore x Stroke: 76 x 82 mm
Compression Ratio: 7.4:1
Cooling System: Air cooled
Induction: Amal Mkl, 30mm slide type carburetor
Ignition: Lucas electronic with battery and coils
Starting: Kick
Battery: 12V Yuasa.
Generator: Lucas 12V/130W single phase alternator.
Clutch: Wet, multiplate
Max Power: 31.3 kW / 42 hp @ 6500 rpm
Max Torque: 50 Nm / 5.1 kgf-m / 37 ft-lb @ 5000 rpm
Transmission: 5 Speed
Final Drive: Chain

Gear Ratio: 1st 13.49 / 2nd 9.59 / 3rd 7.31 / 4th 6.21 / 5th (top) 5.22:1.
Frame: Tubular double cradle with twin front downtubes and spine main frame used as oil tank.
Front Suspension: Telescopic forks with coil springs and oil damping
Front Wheel Travel: 152 mm / 6 in
Rear Suspension: Swinging fork controlled by twin Marzocchi units. Five spring pre-load settings and gas/oi damping
Rear Wheel Travel: 127 mm / 5 in
Front Brakes: Single 10″ disc
Rear Brakes: Singe 7″ drum
Front Tyre: 3.00 -21
Rear Tyre: 4.00 -18
Dimensions: Length: 2248 mm / 88.5inWidth: 787 mm / 31.0 in. Height: 1118 mm / 44.0 in.
Seat height: 826 mm / 32.5 in.
Wheelbase: 1422 mm / 56 in.
Dry Weight: 174 kg / 383 lbs
Fuel Capacity: 10.5 L / 2.8 US gal / 2.3 Imp gal
Standing 1/4 Mile: 14.2 sec / 147 km/h / 91.3 mph
Top Speed: 167 km/h / 104 mph

Related models: