Make Model | Yamaha YDS-3C |
Year | 1966 |
Engine | Air-cooled, two stroke, piston-port, parallel twin, Crankshaft supported in four roller bearings; needle-roller small-end and big-end bearings. Light-alloy cylinder head; |
Capacity | 246 |
Bore x Stroke | 56 x 50 mm |
Compression Ratio | 7.5;1 |
Induction | 2x Mikunis VM24SC with air filter. Direct-operating, coupled air slides. |
Ignition / Starting | Generator / kick |
Electrical Equipment: | Mitsubishi 65-watt dc generator charging six-volt battery through automatic voltage regulator. Coil ignition. 6in-diameter headlamp with pre-focus light unit; 35/35-watt main bulb. |
Max Power | 24 hp @ 7500 rpm |
Max Torque | 18.1 ft-lb 4.2 kgf-m @ 7500 rpm |
Transmission / Drive | 5 Speed Helical-gear primary drive. Rear chain % x %in with top guard. Engine rpm at 30 mph in top gear, approximately 2,500. / chain |
Gear Ratio | 1st 2.545 2nd 1.533 3rd 1.167 4th 0.950 5th .0773 |
Clutch | Wet, multi-plate clutch mounted on left side of crankshaft |
Front Suspension | Telescopic forks with hydraulic damping. |
Rear Suspension | Dual shocks swinging arm, Pivoted rear fork controlled by spring-and-hydraulic units with three-position adjustment for load. |
Front Brakes | Drum |
Rear Brakes | Drum |
Front Tyre | 3.00 -18 |
Rear Tyre | 3.25 -18 |
Dimensions L /W / H | 79 in / 31.2 in / 42 in |
Wheelbase | 51.9 in |
Wet Weight | 320 lb |
Fuel Capacity | 3.0 gal |