The Yamaha YR5 is a 1970 model motorcycle with a two stroke, parallel twin engine and a capacity of 347 cc. It has a compression ratio of 6.9:1 and is air cooled, with induction via 2x 28mm Mikuni carburetors. The bike has a kick start and a maximum power of 36 hp at 7000 rpm, with a maximum torque output. The transmission has 5 speeds and the final drive is via chain. The frame is a tubular steel duplex cradle, with non-adjustable telescopic front forks and dual shock absorbers that are preload adjustable at the rear. The front and rear brakes are 183mm drums and have tyres of 3.00-18 and 3.50-18 respectively. The seat height is 790mm/31in and the wet weight is 150kg/330 lbs. Fuel capacity is 12 litres/3.1 gallons.
Technical specifications:
Make Model: Yamaha YR5
| Year | 1970- |
|---|---|
| Engine | Two stroke, parallel twin |
| Capacity | 347 cc / 21.1 cu-in |
| Bore x Stroke | 64 54 mm |
| Compression Ratio | 6.9:1 |
| Cooling System | Air cooled |
| Induction | 2x 28mm Mikuni carburetors |
| Ignition | |
| Starting | Kick |
| Max Power | 36 hp @ 7000 rpm |
| Max Torque | |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Frame | Tubular steel duplex cradle |
| Front Suspension | Telescopic forks non adjustable. |
| Rear Suspension | Dual shock absorbers preload adjustable. |
| Front Brakes | 183mm drum |
| Rear Brakes | 183mm drum |
| Front Tyre | 3.00-18 |
| Rear Tyre | 3.50-18 |
| Seat Height | 790 mm / 31 in |
| Wet Weight | 150 kg / 330 lbs |
| Fuel Capacity | 12 Litres / 3.1 gal |
