These are the known mechanical and performance specifications for your 1972 Yamaha U7E.
Basic Specs
Engine
Displacement72.00 ccm (4.39 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression6.8:1
Bore/Stroke47.0 x 42.0 mm (1.9 x 1.7 inches)
Valves/Cylinder
Fueling
Ignition
Exhaust
Lubrication
CoolingAir
Performance
Horespower4.90 HP (3.6 kW)
Torque
Top Speed85.0 km/h (52.8 mph)
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight77.0 kg (169.8 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre225-17
Rear Tire/Tyre250-17
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments