Yamaha RS 100 (1978-79)

The Yamaha RS 100 motorcycle was produced from 1978-79, with a two-stroke, single-cylinder engine that had a capacity of 97cc. It had a maximum power output of 11hp at 8500rpm and a maximum torque of 10.1Nm at 700rpm, coupled with a 5-speed transmission and chain final drive system. The front suspension featured telescopic forks while the rear suspension had dual shocks. Drum brakes were used both at the front and rear with dimensions of the front tyre being 2.75-18 and the rear tyre being 3.00-18. The Yamaha RS 100 had a length of 1945mm, width 730mm, and height 1045mm. The wheelbase was 1240mm, while seat height stood at 775mm. The motorcycle weighed 91kg and its fuel tank capacity was 10 litres. The lubrication system used was Autolube, with a VM20SH carburetor, and magneto ignition with CB/coil starting. The compression ratio stood at 7.0:1 with a wet multi-plate clutch system used.

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Technical specifications:

Make Model: Yamaha RS 100

Year: 1978 – 79

Engine: Two stoke, torque induction, single

Capacity: 97 cc / 5.9 cu-in

Bore x Stroke: 52 x 45.6 mm

Cooling System: Air cooled

Compression Ratio: 7.0: 1

Lubrication: Autolube

Induction: VM20SH carburetor

Ignition: Magneto, CB/coil

Starting: Kick

Max Power: 11 hp / 8.1 kW @ 8500rpm

Max Torque: 10.1 Nm / 1.03 kgf-m @ 700rpm

Clutch: Wet multiplate

Transmission: 5 Speed

Final Drive: Chain

Front Suspension: Telescopic forks

Rear Suspension: Dual shocks

Front Brakes: Drum

Rear Brakes: Drum

Front Tyre: 2.75-18

Rear Tyre: 3.00-18

Dimensions: Length 1945 mm / 76.5 in Width 730 mm / 28.7 in Height 1045 mm / 41.1 in

Wheelbase: 1240 mm / 48.8 in

Seat Height: 775 mm / 30.5 in

Dry Weight: 91 kg / 200.6 lbs

Fuel Capacity: 10 Litres / 2.6 US gal