1971 Yamaha R5-B 350 technical specifications

Technical specifications

Model: R5-B 350
Years: 1971
Engine/frame Numbers: R5-015101 - 042209
Engine: Piston port two stroke, parallel twin cylinder.
Capacity: 347 cc / 21.2 cu in
Bore x Stroke: 64 х 54 mm
Compression Ratio: 7.5:1
Cooling System: Air cooled
Oil System: Oil injection
Induction: 2 x Mikuni VM28 SC carburetors
Ignition: Battery, dual coils, breaker points
Starting: Kick
Max Power: 26.8 kW / 36 hp @ 7000 rpm
Max Torque: 37.9 Nm / 3.87 kgf-m / 28 ft-lb @ 6500 rpm
Clutch: Multi-plate, wet
Transmission: 5 Speed
Final Drive: Chain
Gear Ratios: 1st 19.57 / 2nd 12.15 / 3rd 9.12 / 4th 7.38 / 5th 6.16:1
Frame: Duplex cradle frame
Front Suspension: Telescopic fork
Rear Suspension: Swingarm
Front Brakes: Drum, twin leading shoe
Rear Brakes: Drum, single leading shoe
Front Tyre: 3.00-18
Rear Tyre: 3.50-18
Dimensions: Width: 739 mm / 29.1"
Wheelbase: 1341 mm / 52.8"
Seat Height: 790 mm / 31.1"
Footpeg Height: 234 mm / 9.2"
Ground Clearance: 180 mm / 7.1"
Dry Weight: 146 kg / 322 lbs
Wet Weight: 154 kg / 340 lbs
Oil Capacity: 2.0 L / 4.2 US pts
Fuel Capacity: 12 L / 3.2 US gal
Average Fuel Consumption: 6.7 L/100 km / 14.9 km/l / 35 US mpg
Braking 48 km/h / 30 mph - 0: 11 m / 36 ft
Braking 97 km/h / 60 mph - 0: 37 km/ 121 ft
Standing ¼ Mile: 15.5 sec / 130 km/h / 81 mph
Top Speed: 153 km/h / 95 mph
Source: Motorcycle Classics

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