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Manufacturer | Yamaha Motor Company |
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Also called | Ultimate Dual |
Production | 1988 - 1993 |
Class | Dual Sport |
Engine | 249cc two-Stroke parallel twin YPVS |
Transmission | 6-speed constant mesh manual, chain final drive |
Wheelbase | 1,385 mm (54.5 in) |
Dimensions | L: 2,145 mm (84.4 in) W: 785 mm (30.9 in) |
Seat height | 820 mm (32.3 in) |
Weight | 137 kg (302 lb) (dry) |
Fuel capacity | 14.0 L (4 US gal; 3 imp gal) |
Related | Yamaha R1-Z, Yamaha TZR250 |
The Yamaha TDR250 was a street-legal middleweight dual-sport bike produced by Japanese motorcycle manufacturer Yamaha between 1988 and "1993."
It was powered by the: naturally-aspirated, "crankcase reed-valve inducted," liquid-cooled 249cc parallel-twin two-stroke engine from the——first generation TZR250 (this same engine also powered the R1-Z). This engine featured the "'YPVS' Yamaha Power Valve System," CDI ignition and digital spark advance ※. Almost all of the engine, gearbox, and electrical components are interchangeable with the TZR and R1-Z.
The TDR was designed to provide agile handling and quick acceleration both on and off the road. And power delivery was modified to suit its intended use ※. The special upswept expansion chambers, unique to the TDR, part of this; as well as aiding ground clearance. The bike was originally released in a 250cc format. But a 240cc derivative was also produced exclusively for the French market.
Specifications of TDR 250※
Engine Type | Parallel Twin Cylinder, Water Cooled, Two-Stroke, YPVS |
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Carburetion | Mikuni TM28SS x 2 |
Displacement | 249 cc ※ |
Bore × Stroke | 56.4 x 50.0 mm ※ |
Peak Power | 50.3 PS (37.1 kW) @ 10,000 rpm ※ |
Peak Torque | 3.7 kg-m (36.2 Nm) @8,500 rpm ※ |
Compression Ratio | 5.9:1 ※ |
Fuel Capacity | 14.0 L (4 US gal; 3 imp gal) |
Oil Capacity | 1.4 L (0.4 US gal; 0.3 imp gal) |
Seat Height | 820 mm (32.3 in) |
Dry Weight | 137 kg (302 lb) |
Tires | Front 100/90-18H Rear 120/80-17H |
Brakes | Front Hydraulic disc, with 320 mm (12.6 in) floating disc and 4-pot opposed-piston caliper. Rear Hydraulic disc, with 210 mm (8.3 in) disc and opposed-piston caliper |
Final drive | Chain |
Note: ※= French Model
References※
- ^ "Yamaha TDR250". www.motorcyclespecs.co.za. Retrieved 2024-05-22.
External links※
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