| General information |
|---|
| Model: | Yamaha YAS 1 |
| Year: | 1970 |
| Category: | Classic |
| Engine and transmission |
|---|
| Displacement: | 125.00 ccm (7.63 cubic inches) |
| Engine type: | Twin |
| Stroke: | 2 |
| Power: | 15.00 HP (10.9 kW)) @ 8500 RPM |
| Compression: | 7.0:1 |
| Bore x Stroke: | 43.0 x 43.0 mm (1.7 x 1.7 inches) |
| Fuel control: | Port control |
| Cooling system: | Air |
| Gearbox: | 5-speed |
Transmission type
final drive: | Chain |
| Physical measurements |
|---|
| Weight incl. oil, gas, etc: | 105.0 kg (231.5 pounds) |
| Chassis and dimensions |
|---|
| Front tyre dimensions: | 2.50-18 |
| Rear tyre dimensions: | 2.75-18 |
| Front brakes: | Expanding brake |
| Rear brakes: | Expanding brake |
| Speed and acceleration |
|---|
| Top speed: | 110.0 km/h (68.4 mph) |
| Other specifications |
|---|
| Fuel capacity: | 9.50 litres (2.51 gallons) |
