Yamaha YDS7 (1972)

Make Model: Yamaha YDS-7


Year: 1972
Engine: Two stroke, piston-port, parallel twin
Capacity: 247 cc / 15.0 cu-in
Bore x Stroke: 54 x 54 mm
Compression Ratio: 7.5;1
Cooling System: Air-cooled
Induction: 26mm Mikuni
Ignition: Mitsubishi contact breaker
Starting: Kick
Max Power: 30 hp @7500 rpm
Max Torque: 21 ftlb @ 7000 rpm
Clutch: Wet, multi-plate clutch mounted on left side of crankshaft
Transmission: 5 Speed Helical-gear primary drive. Rear chain % x %in with top guard. Engine rpm at 30 mph in top gear, approximately 2,500.
Final Drive: Chain
Front Suspension: 34mm Telescopic forks
Rear Suspension: Twin shock
Front Brakes: 180mm twin leading shoe drum
Rear Brakes: 180mm single leading shoe
Front Tyre: 300 x 18
Rear Tyre: 3.25 x 18
Wheelbase: 1300 mm / 51.1 in

Wet Weight: 145 kg / 320 lbs
Fuel Capacity: 11.4 Litres / 3.0 gal


You May Like