The Yamaha R5-A 350 was a motorcycle produced in 1970 with an engine/frame number range of R5-000101 to 013649. Its engine was a piston port two-stroke, parallel twin cylinder with a 347 cc/21.2 cu in capacity, and its compression ratio was 7.5:1. The cooling system was air-cooled, and it utilized oil injection. It had two Mikuni VM28 SC carburetors for induction with battery-powered dual coils and breaker points for ignition. The motorcycle had a kick-start and a clutch system of multi-plate, wet. It had a 5-speed transmission with a chain final drive. The frame was a duplex cradle frame, and it had a telescopic fork front suspension and swingarm rear suspension. The braking system featured a drum, twin leading shoe for the front brakes and a drum, single leading shoe for the rear brakes. The wheels were 18 inches with a width of 739mm/29.1 inches, and it had a wheelbase of 1341 mm/52.8 inches. The seat height was 790 mm/31.1 inches, and the footpeg height was 234 mm/9.2 inches with a ground clearance of 180 mm/7.1 inches. The dry weight was 146 kg/322 lbs, and the wet weight was 154 kg/340 lbs with a fuel capacity of 12 L/3.2 US gal. On average, the fuel consumption of the motorcycle was 6.7 L/100 km, and its top speed was 153 km/h/95 mph, with a standing 1/4 mile of 15.5 seconds/130 km/h/81 mph. Its braking distance for 48 km/h/30 mph-0 was 11 m/36 ft, and for 97 km/h/60 mph-0, it was 37 km/121 ft.
Technical specifications:
Make Model: Yamaha R5-A 350
| Year | 1970 |
|---|---|
| Engine/frame Numbers | R5-000101 – 013649 |
| Engine | Piston port two stroke, parallel twin cylinder. |
| Capacity | 347 cc / 21.2 cu in |
| Bore x Stroke | 64 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 1/4 Mile | 15.5 sec / 130 km/h / 81 mph |
| Top Speed | 153 km/h / 95 mph |
| Source | Motorcycle Classics |
