Yamaha TDM850

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Yamaha TDM 850
TDM 850 Bj 91.jpg
ManufacturerYamaha Motor Company
Also calledTDM
Production1991- 2001
Predecessor XTZ 750 Super Tenere
Successor Yamaha TDM 900
Class Sport touring
Engine Mk I 850 cc liquid-cooled multi-valve parallel-twin 360-degree cranks / Mk II 850 cc liquid-cooled multi-valve crossplane parallel-twin 270-degree crank
Top speed130 mph (210 km/h) [1]
Power 57 kW (77 hp) [1]
Torque 80 N⋅m (59 lb⋅ft) [1]
Transmission 5-speed manual
Seat height795 mm (31.3 in)
Fuel capacity20 L (4.4 imp gal; 5.3 US gal)
Yamaha TDM850 Mk II with 270deg engine Yamaha TDM850 red.jpg
Yamaha TDM850 Mk II with 270° engine

The Yamaha TDM is an 849 cc DOHC parallel-twin motorcycle that heralded the modern "Sport touring" category. The TDM was first manufactured by the Yamaha Motor Company of Japan in 1991. The TDM has a pressed-steel frame and a dry sump engine with five valves per cylinder, (three inlet and two exhaust).

Contents

History

The TDM was arguably the first road-oriented "Adventure Sports" motorcycle. It was not intended as an off-road machine, but as a comfortable yet manoeuvrable all-rounder, rather like the Ducati Multistrada of later years. A TDM is too bulky and heavy for serious off-road work, but its long-travel suspension can cope with gravel tracks.

The TDM's engine was derived from the Paris Dakar winning Yamaha XTZ 750 Super Tenere. Yamaha intended to create a motorcycle capable of handling European mountain roads and coping with rougher road surfaces. The TDM's upright riding position seemed radical in its day.[ citation needed ]

The TDM was imported into the United States for only two years, 1992 and 1993. It was never a big seller in the United Kingdom nor at first in The Netherlands, but sales were strong in other European countries, particularly in France, Germany and Greece.[ citation needed ].

In 1996, instead of the previous 360 engine Yamaha released the Mk II TDM with updated bodywork and a 270° firing order engine that was shared with the TRX850, they also shared the same transmission. [2] [3] This new engine was first seen in 1995, when Yamaha introduced its TRX850 in Japan.

Although early models came with no fuel gauge and a reserve fuel tap, beginning in 1999, Yamaha replaced the temperature gauge on the dashboard with a fuel gauge.

Successor

In 2001 the TDM850 was succeeded by the TDM 900, a more powerful bike with a similar concept to the 850. The TDM900 featured new bodywork, a diamond-shaped alloy frame, a 6-speed gearbox, fuel-injection, R1-derived brakes, a reduced dry weight of 190 kg, a larger-capacity 900cc engine, and slightly wider tyres (160 rear, 120 front). It has a 2-position trip meter, a digital clock, and digital fuel meter. ABS was available as an option. The engine has a maximum power output of 84.8 hp (63.2 kW) @ 7,500 rpm and torque 65.49 lb⋅ft (88.79 N⋅m) @ 7,500 rpm (claimed). [4]

Reception

MCN said of the TDM850 Mk II: "Fairly revolutionary when launched and certainly years ahead of its time, the Yamaha TDM850 was a sort of Multistrada 12 years before Ducati thought of it. As a serious ‘street trailie allrounder' it’s pretty effective too. The later 900 is better, but the Yamaha TDM850 is still decent, good value, different, and largely overlooked". [1]

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References

  1. 1 2 3 4 "YAMAHA TDM850 (1991-2001) Review". Motorcycle News. November 24, 2006. Retrieved November 5, 2016.
  2. "YAMAHA TRX850 (1996-2000) Review". Motorcycle News. November 24, 2006. Retrieved November 18, 2017.
  3. MacKellar, Colin (April 20, 1996). "Yamaha TRX 850". Motorcycle.com. Archived from the original on September 17, 2016. Retrieved November 27, 2016.{{cite web}}: CS1 maint: unfit URL (link)
  4. "2013 Yamaha TDM900". Top Speed. May 8, 2013. Retrieved November 5, 2016.