Yamaha TDM 850 (1991-92)

The Yamaha TDM 850 was a motorcycle produced between 1991 and 1992. It had a four stroke, parallel twin-cylinder engine with 5 valves per cylinder and a capacity of 849cc. The bike was liquid-cooled with a compression ratio of 9.2:1 and had an induction of 2x Mikuni BDST88 carburetors. The ignition was digital and had an electric start. The TDM 850 had a maximum power of 77 hp at 7500 rpm, with a maximum torque of 75.5 Nm at 6000rpm. It had a five-speed transmission with a final drive of chain. The front suspension was 41mm Telehydraulic forks that were adjustable for preload and rebound, and the rear suspension was a Monocross single DeCarbon type gas-oil shock that was also adjustable for preload and rebound. Both front and rear brakes were disc with piston calipers, and the tires were 110/80-18 for the front and 150/70-17 for the rear. The Yamaha TDM 850 weighed 199kg dry and 219kg wet, with a fuel capacity of 18 litres. In terms of performance, the TDM 850 had an average fuel consumption of 15.5 km/lit and could brake from 60-0 in 12.8m. It also had a top speed of 209.1 km/h and could complete a standing 1/4 mile in 11.6 seconds.

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Technical specifications:

Make Model: Yamaha TDM 850

Year: 1991 – 92

Engine: Four stroke, parallel twin cylinder, DOHC, 5 valves per cylinder

Capacity: 849 cc / 51.8 cu-in

Bore x Stroke: 89.5 x 67.5 mm

Cooling System: Liquid cooled

Compression Ratio: 9.2:1

Induction: 2x Mikuni BDST88 carburetors

Ignition: Digital

Starting: Electric

Max Power: 77 hp / 56.1 kW @ 7500 rpm

Max Power Rear Tyre: 74. 9 hp / 55.8 kW @ 7500 rpm

Max Torque: 75.5 Nm / 55.6 lb-ft @ 6000 rpm

Transmission: 5 Speed

Final Drive: Chain

Front Suspension: 41mm Telehydraulic forks, adjustable for preload and rebound

Front Wheel Travel: 160 mm / 6.2 in

Rear Suspension: Monocross single DeCarbon type gas-oil shock adjustable for preload and rebound

Rear Wheel Travel: 140 mm / 5.5 in

Front Brakes: 2x 298mm discs 4 piston calipers

Rear Brakes: Single 245mm disc 2 piston caliper

Front Tyre: 110/80-18

Rear Tyre: 150/70-17

Dry Weight: 199 kg / 438.7 lbs

Wet Weight: 219 kg / 482.8 lbs

Fuel Capacity: 18 Litres / 4.7 US gal

Consumption Average: 15.5 km/lit

Braking 60 – 0 / 100 – 0: 12.8 m / 37.9 m

Standing 1/4 Mile: 11.6 sec / 180.4 km/h

Top Speed: 209.1 km/h / 129.8 mph