| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Yamaha |
| Model Name | YAS 1 |
| Year | 1970 |
| Category(class) | Classic |
| Engine |
|---|
| Engine Capacity (Displacement) | 125 ccm (7.63 cubic inches) |
| Engine Type | Twin |
| Bore x Stroke | Ø43.0 mm x 43.0 mm (Ø1.69 inches x 1.69 inches) |
| Bore/Stroke Ratio | 1 |
| Stroke | 2 |
| Timing System | PORT CONTROL |
| Cooling System | Air |
| Powertrain |
|---|
| Gearbox | 5 speed |
| Chassis/Suspension/Brakes |
|---|
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tire | 2.50-18 |
| Rear Tire | 2.75-18 |
| Dimensions |
|---|
| Curb Weight | 105 kg (231 lb) |
| Fuel Capacity | 9.5 litres (2.51 gallons) |
| Performance |
|---|
| Max Power | 15.00 HP (10.9 kW) at 8500 RPM |
| Power/Weight Ratio | 0.14 Hp/Kg |
| Top Speed | 110 km/h (68mph) |
| Acceleration (dart, speedup) time | |
| 0-100 km/h | 11.1 seconds |
| 0-60 mph | 10.5 seconds |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
