Yamaha DT400
'Yamaha DT400' | |
Manufacturer | [[Yamaha]] |
---|---|
Also called | DT400MX, DT 400 MX, DT 400 |
Production | 1975 - 1978 |
Class | [[:Category:Enduro motorcycles|Enduro]] [[Category:Enduro motorcycles]] |
Engine | 400cc single cylinder, two-stroke |
Bore / Stroke | 85.0mm x 70.0mm |
Compression ratio | 6.4:1 |
Top Speed | 85 mph (136 km/h) |
Horsepower | 20.52 HP (15.3 KW) @ 5600RPM |
Torque | 20.65 ft/lbs (28.0 Nm) @ 3900RPM |
Ignition | cdi |
Spark Plug | NGK B8ES '75-78 |
Battery | YUASA 6N6-3B-1 '77-78 YUASA 6N4B-2A-3 '75-76 |
Transmission | Gear box: 5-speed Final Drive: chain |
Final Drive | Chain: 520 `75-76[1] |
Suspension | Front: Telescopic Forks Rear: Swinging Arm Fork |
Brakes | Front: expanding brake Rear: expanding brake |
Front Tire | 3.00-21 |
Rear Tire | 4.00-18 |
Wheelbase | 55.51 inches (1410 mm) |
Weight | 272.05 pounds (123.4 Kg) (dry), 141.0 kg (wet) |
Recommended Oil | Yamalube 10w-40 |
Fuel Capacity | 2.38 Gallon (9.00 Liters) |
Value | $2000 |
Manuals | Service Manual |
The Yamaha DT400MX was a single cylinder, two-stroke Enduro motorcycle produced by Yamaha between 1975 and 1978. It could reach a top speed of 85 mph (136 km/h). Max torque was 20.65 ft/lbs (28.0 Nm) @ 3900 RPM. Claimed horsepower was 20.52 HP (15.3 KW) @ 5600 RPM.
The DT400B had all the components for an enduro motorcycle including raised front and rear fenders, good ground clearance, a raised side mounted exhaust system. Stripped down, the DT400B could race in the early motocross races with similar motorcycles.
Engine
The engine was a air cooled single cylinder, two-stroke. A 85.0mm bore x 70.0mm stroke result in a displacement of just 397.0 cubic centimeters. Fuel was supplied via a membrane.
Drive
The bike has a 5-speed transmission. Power was moderated via the Wet multi-discs.
Chassis
It came with a 3.00-21 front tire and a 4.00-18 rear tire. Stopping was achieved via expanding brake in the front and a expanding brake in the rear. The front suspension was a Telescopic Forks while the rear was equipped with a Swinging Arm Fork. The DT400MX was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 272.05 pounds (123.4 Kg). The wheelbase was 55.51 inches (1410 mm) long.
Major competitors
- Honda
- Kawasaki F9 (350cc)
- Suzuki
1975 DT400B
1976 DT400C
- Starting Engine#: 501-200101
1977 DT400D
- Starting Engine#: 1M2-000101
1978 DT400E
- Starting Engine#: 1M2-100101
1975 - 1977 Yamaha DT 400
This new big-bore 400cc enduro. Go just about anywhere, do just about anything and do it with zip! The DT1 250 had grown up, first to 360 size, and now 400, and had become an extremely seductive machine.
1978 - 1980 Yamaha DT 400
The latest Yamaha DT 400 has a new monoshock frame. The DT 400 has a performance capability close to that of the pure motocross machine.
In Media
References
- ↑ 2019 Western Power Sports Catalog. Western Power Sports. 2019.
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