Yamaha YDS7 (WetWeight)

The Yamaha YDS-3 is a motorcycle that was produced in the past. Its wet weight is 145 kg or 320 lbs, while its fuel capacity is 11.4 liters or 3.0 gallons. The motorcycle utilizes a two-stroke, piston-port, parallel twin engine, with its crankshaft supported by four roller bearings and needle-roller small-end and big-end bearings. The aluminum cylinder head has a capacity of 247 cc or 15.0 cu-in, with a 56 x 50 mm bore x stroke and a compression ratio of 7.5;1. The YDS-3 has a direct-operating, coupled air slide induction system, 2x Mikunis VM24SC with an air filter, and coil ignition. It has a maximum power output of 24 hp at 7500 rpm and a maximum torque of 18.1 ft-lb or 4.2 kgf-m at 7500 rpm. The YDS-3 has a wet, multi-plate clutch mounted on the left side of the crankshaft and a 5-speed helical-gear primary drive transmission with a rear chain. The front suspension features telescopic forks with hydraulic damping, while the rear suspension has dual shocks swinging arm, pivoted rear fork controlled by spring-and-hydraulic units with three-position adjustment for load. The YDS-3 comes with drum brakes, a front tire size of 3.00 -18, and a rear tire size of 3.25 -18. The dimensions of the YDS-3 are 79 inches in length, 31.2 inches in width, and 42 inches in height, with a wheelbase of 1470.5 mm or 51.9 inches.

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Technical specifications:

Make Model: Yamaha YDS-3

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

Wet Weight: 145 kg / 320 lbs

Fuel Capacity: 11.4 Litres / 3.0 gal

Engine: 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: 247 cc / 15.0 cu-in

Bore x Stroke: 56 x 50 mm

Compression Ratio: 7.5;1

Cooling System: Air-cooled

Induction: 2x Mikunis VM24SC with air filter. Direct-operating, coupled air slides.

Ignition: Generator

Starting: 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

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

Gear Ratio: 1st 2.545 2nd 1.533 3rd 1.167 4th 0.950 5th .0773

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: 1470.5 mm / 51.9 in

Wet Weight: 145 kg / 320 lbs

Fuel Capacity: 11.4 Litres / 3.0 gal