Yamaha YDS7 (1962-63)

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.

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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: