Yamaha TDR250 (1988-89)

The Yamaha TDR 250 was a motorcycle model produced in 1988-89. It had a 249cc two-stroke, parallel twin cylinder engine with YPVS and autolube lubrication. Its maximum power output was 46 hp at 10000 rpm, and maximum torque was 3.7 kgf-m at 8500 rpm. The bike had a 6-speed transmission with a chain final drive. The front and rear suspensions had adjustable preload (7-way for the front and rising rate for the rear) and the brakes were single disc with two-piston calipers in the front and single caliper in the rear. The TDR 250 had a fuel capacity of 14 liters and weighed 153kg when wet. Its top speed was 175 km/h and it could brake from 60-0 in 14.0m or 100-0 in 38.7m. The dimensions of the TDR 250 were Length 2145mm, Width 785mm, Height 1215mm, Wheelbase 1385 mm, Seat Height 820mm and Ground Clearance 230mm. Its average fuel consumption was 15.9lm/lit and standing 1/4 mile time was 13.6 seconds with a top speed of 152.8 km/h.

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Technical specifications:

Make Model: Yamaha TDR 250

Year: 1988 – 89

Engine: Two stroke, parallel twin cylinder, read valve, YPVS

Capacity: 249 cc / 15.2 cu-in

Bore x Stroke: 56.4 50 mm

Cooling System: Liquid cooled

Compression Ratio: 5.9:1

Lubrication: Autolube

Induction: 2x 28mm TM28SS Mikuni carburetors

Ignition: Transistorized

Starting: Kick

Max Power: 46 hp / 37 kW @ 10000 rpm

Max Torque: 3.7 kgf-m / 26.7 lb-ft @ 8500 rpm

Transmission: 6 Speed

Final Drive: Chain

Front Suspension: Air assisted telescopic forks 7-way adjustable preload

Rear Suspension: Single shock rising rate adjustable preload

Front Brakes: Single 320mm disc 2 piston calipers

Rear Brakes: Single 210mm disc single piston caliper

Front Tyre: 110/90-18

Rear Tyre: 120/80-17

Dimensions: Length 2145 mm / 84.4 in Width 785 mm / 30.9 in Height 1215 mm / 47.8 in

Wheelbase: 1385 mm / 54.5 in

Seat Height: 820 mm / 32.2 in

Ground Clearance: 230 mm / 9.0 in

Dry Weight: 137 kg / 302 lbs

Wet Weight: 153 kg / 337 lbs

Fuel Capacity: 14 Litres / 3.6 US gal

Consumption Average: 15.9 lm/lit

Braking 60 – 0 / 100 – 0: 14.0 m / 38.7 m

Standing 1/4 Mile: 13.6 sec / 152.8 km/h

Top Speed: 175 km/h