Yamaha GT80 B: history, specs, pictures
| Manufacturer | Yamaha |
|---|---|
| Production | 1975 |
| 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 | carburettor. teikei |
| Ignition type | points type ignition |
| Battery | 6.0:1 |
| Transmission | Gear box: 4-speed Final Drive: chain |
| 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 |
| Rear Tire | 2.75-14 |
| Weight | 130.07 pounds (59.0 Kg) (dry), 60.3 kg (wet) |
| Fuel capacity | 1.3 Gallon (4.92 Liters) |
| Manuals | Service Manual |
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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.
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).