Yamaha U7E: history, specs, pictures
| 'Yamaha U7E' | |
| Manufacturer | [[Yamaha]] |
|---|---|
| Production | 1972 - 1973 |
| Engine | single cylinder, two-stroke |
| Bore / Stroke | 47.0mm x 42.0mm |
| Top Speed | 53 mph (85 km/h) |
| Horsepower | 4.83 HP (3.6 KW) @ 6500RPM |
| Torque | 4.72 ft/lbs (6.4 Nm) @ 4500RPM |
| Fuel System | carburetor |
| Transmission | Gear box: 3-speed Final Drive: chain |
| Brakes | Front: expanding brake (drum brake) Rear: expanding brake (drum brake) |
| Front Tire | 225-17 |
| Rear Tire | 250-17 |
| Wheelbase | 46.26 inches (1175 mm) |
| Length | 72.44 inches (1840 mm) |
| Width | 25.39 inches (645 mm) |
| Height | 39.57 inches (1005 mm) |
| Weight | 169.76 pounds (77.0 Kg) (dry), |
| Recommended Oil | Yamalube 10w-40 |
| Fuel Capacity | 1.19 Gallon (4.50 Liters) |
| Manuals | Service Manual |
The Yamaha U7E was a single cylinder, two-stroke standard produced by Yamaha between 1972 and 1973. It could reach a top speed of 53 mph (85 km/h). Max torque was 4.72 ft/lbs (6.4 Nm) @ 4500 RPM. Claimed horsepower was 4.83 HP (3.6 KW) @ 6500 RPM.
Engine
The engine was a air cooled single cylinder, two-stroke. A 47.0mm bore x 42.0mm stroke result in a displacement of just 72.0 cubic centimeters.
Drive
The bike has a 3-speed transmission.
Chassis
It came with a 225-17 front tire and a 250-17 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The U7E was fitted with a 1.19 Gallon (4.50 Liters) fuel tank. The bike weighed just 169.76 pounds (77.0 Kg). The wheelbase was 46.26 inches (1175 mm) long.