Yamaha RS 100 (1978-79)

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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.

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

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