The Yamaha YDS7 motorcycle was produced from 1962-63 and featured an air-cooled, two-stroke, piston-port, parallel twin engine with a capacity of 247cc. It had a compression ratio of and was powered by a single carburetor, producing a maximum power of 23 hp at 7500 rpm and maximum torque of 5.2 kgf-m at 6000 rpm. The transmission was 5 speed with a chain final drive. The front suspension featured telescopic forks and the rear suspension was a swing arm. The brakes were drum, and it had 3.00-18 sized tires. The wheelbase was 1290mm and wet weight was 138kg or 309lbs. Fuel capacity is not provided.
Technical specifications:
Make Model: Yamaha YDS-2
| Year | 1962-63 |
|---|---|
| Engine | Air-cooled, two stroke, piston-port, parallel twin |
| 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 | 23 hp @ 7500 rpm |
| Max Torque | 5.2 kgf-m @ 6000 rpm |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swing arm |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| Front Tyre | 3.00 -18 |
| Rear Tyre | 3.00 -18 |
| Wheelbase | 1290 mm |
| Wet Weight | 138 kg / 309 lbs |
| Fuel Capacity |
