Yamaha DT50: history, specs, pictures

**Yamaha DT50**
	Yamaha DT50
Manufacturer	Yamaha
Also called	DT50 Supermotard, DT 50 Supermotard, DT50 Enduro, DT 50 Enduro, DT 50 X, DT 50 R, DT50R, DT50X, DT50MX, DT 50 MX, DT 50
Production	1981 - 2012
Class	Trail
Engine	single cylinder, two-stroke
Bore / Stroke	40.0mm x 39.7mm
Compression ratio	5.3
Fuel System	Yeikei Y12P arburetor
Ignition	Flywheel magneto
Spark Plug	NGK B6HS
Battery	6N4B-2A-3/6V
Transmission	Gear box: 5-speed ; Final Drive: chain ; Clutch: wet multi-plate coil spring ;
Final Drive	Chain: 420
Suspension	Front: 35mm telescopic fork ; Rear: bottom-link
Brakes	Front: single disc ; Rear: single disc
Front Tire	2.50-19 '88-90 ; 110/70-17 - ?
Rear Tire	3.00-17 '88-90 ; 130/70-17 -?
Wheelbase	50.4 inches (1280 mm)
Length	81.7 inches (2075 mm)
Width	32.9 inches (835 mm)
Height	44.7 inches (1135 mm)
Seat Height	32.3 inches (820 mm)
Weight	182 pounds (82 kg) (wet)
Oil Capacity	0.65 Liters
Recommended Oil	10W-30
Fuel Capacity	2.25 Gallon (8.5 L)
Related	Yamaha DT100; Yamaha DT125
Manuals	Service Manual

The Yamaha DT50X was a single cylinder, two-stroke Trail motorcycle produced by Yamaha between 1981 and 2012. It could reach a top speed of 56 mph (90 km/h). Max torque was 14.01 ft/lbs (19.0 Nm) @ 6500 RPM. Claimed horsepower was 17.57 HP (13.1 KW) @ 7500 RPM.

Engine[edit | edit source]

The engine was a liquid cooled single cylinder, two-stroke. A 40.0mm bore x 39.7mm stroke result in a displacement of just 49.0 cubic centimeters. Fuel was supplied by means of either a Mikuni vm18 smoothbore flatslide or a TK carburetor and the exhaust was an expansion chamber type with interchangeable addons

Drive[edit | edit source]

The bike has a 5-speed transmission. Power was moderated via the wet multi-plate coil spring.

Chassis[edit | edit source]

It came with a 2.50-19 front tire and a 130/70-17 rear tire. Stopping was achieved via single disc in the front and a single disc in the rear. The front suspension was a 35mm telescopic fork while the rear was equipped with a bottom-link. The DT50X was fitted with a 2.54 Gallon (9.60 Liters) fuel tank. The bike weighed just 293.21 pounds (133.0 Kg). The wheelbase was 53.74 inches (1365 mm) long.

1990[edit | edit source]

1990 Yamaha DT50 in Turquoise/Gray

In Media[edit | edit source]

References[edit | edit source]