The Yamaha YD-1 250 motorcycle was first produced in 1957. It has a two-stroke, piston-port parallel twin engine with a capacity of 247 cc/15.0 cu-in. The bore and stroke measure 54 x 54 mm and it is air-cooled with a compression ratio of . The bike starts with a kick and has a maximum power of 14.5 hp at 6000 rpm and maximum torque of 4.1 kg-m at 5000 rpm. The transmission is a 5-speed with a final chain drive. The front suspension is telescopic forks and the rear suspension is swing arm. The brakes for both the front and rear wheels are drum brakes. The front and rear tires are both 2.50 -16. The bike has a wet weight of 138 kg/309 lbs and fuel capacity is not specified in the provided information.
Technical specifications:
Make Model: Yamaha YD-1
| Year | 1957 |
|---|---|
| Engine | Two stroke, piston-port, parallel twin |
| Capacity | 247 cc / 15.0 cu-in |
| Bore x Stroke | 54 x 54 mm |
| Cooling System | Air-cooled |
| Compression Ratio | |
| Induction | Single carburetor |
| Starting | Kick |
| Max Power | 14.5 hp @ 6000 rpm |
| Max Torque | 4.1 kg-m @ 5000 rpm |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swing arm |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tyre | 2.50 -16 |
| Rear Tyre | 2.50 -16 |
| Wet Weight | 138 kg / 309 lbs |
| Fuel Capacity |
