Yamaha GT80: history, specs, pictures
The Yamaha GT80 B was a single cylinder, two-stroke standard produced by Yamaha in 1975. It could reach a top speed of 57 mph (91 km/h). Max torque was 4.5 ft/lbs (6.1 Nm) @ 7200 RPM.
'Yamaha GT80' | |
Manufacturer | [[Yamaha]] |
---|---|
Also called | GT80/MX |
Production | 1973 - 1980 |
Class | [[:Category:Enduro motorcycles|Enduro]] [[Category:Enduro motorcycles]] |
Engine | single cylinder, two-stroke |
Bore / Stroke | 47.0mm x 42.0mm |
Top Speed | 57 mph (91 km/h) |
Torque | 4.5 ft/lbs (6.1 Nm) @ 7200RPM |
Fuel System | carburetor. teikei |
Ignition | points type ignition |
Spark Plug | NGK B7HS '73-80 [1] |
Battery | YUASA 6N4-2A-5 '73-80 [1] |
Transmission | Gear box: 4-speed Clutch: wet plate |
Final Drive | Chain: 420x |
Suspension | Front: inverted forks Rear: non-adjustable dual shock |
Brakes | Front: expanding brake (drum brake) Rear: expanding brake (drum brake) |
Front Tire | 2.50-15 '73-80 [1] |
Rear Tire | 2.75-14 '73-80 [1] |
Weight | 130.07 pounds (59.0 Kg) (dry), 60.3 kg (wet) |
Fuel Capacity | 1.3 Gallon (4.92 Liters) |
Manuals | Service Manual |
Engine
The engine was a air cooled single cylinder, two-stroke. A 47.0mm bore x 42.0mm stroke result in a displacement of just 72.0 cubic centimeters.
Drive
The bike has a 4-speed transmission. Power was moderated via the wet plate.
Chassis
It came with a 2.50-15 front tire and a 2.75-14 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The front suspension was a inverted forks while the rear was equipped with a non-adjustable dual shock. The GT80 B was fitted with a 1.3 Gallon (4.92 Liters) fuel tank. The bike weighed just 130.07 pounds (59.0 Kg).
1973
1978
1980
1981
References
- ↑ 1.0 1.1 1.2 1.3 2019 Western Power Sports Catalog. Western Power Sports. 2019.