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Motorcycles Specs > Yamaha > Yamaha U7E

Yamaha U7E Specs

The Yamaha U7E model is a Scooter bike manufactured by Yamaha . In this version sold from year 1972 , the dry weight is 77.0 kg (169.8 pounds) and it is equiped with a Single cylinder, two-stroke motor. The engine produces a maximum peak output power of 4.90 HP (3.6 kW) @ 6500 RPM and a maximum torque of  . With this drive-train, the Yamaha U7E is capable of reaching a maximum top speed of 85.0 km/h (52.8 mph) . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Yamaha U7E have a  frame with front suspension being  and in the rear suspension it is equiped with  . Stock tire sizes are 225-17 on the front, and 250-17 on the rear. As for stopping power, the Yamaha U7E braking system includes Expanding brake (drum brake) size  at the front and Expanding brake (drum brake) size  at the rear. 

Yamaha U7E General Information

Brand Yamaha 
Model Yamaha U7E 
Year 1972 
Year 1972 
Category Scooter 
Factory Warranty (Years / miles)  

Yamaha U7E Dimensions, Aerodynamics and weight

Frame type  
Seat details  
Wheelbase  
Length  
Width  
Height  
Seat Height  
Alternate Seat Height  
Ground Clearance  
Trail size  
Wheels details  
Front Tyres - Rims dimensions 225-17 
Rear Tyres - Rims dimensions 250-17 
Front brakes Expanding brake (drum brake) 
Rear brakes Expanding brake (drum brake) 
Front Brakes Dimensions - Disc Dimensions  
Rear Brakes Dimensions - Disc Dimensions  
Curb Weight (including fluids)  
Dry Weight 77.0 kg (169.8 pounds) 
Front Percentage of Weight  
Rear Percentage of Weight  
Weight-Power Output Ratio : 0.0636 HP/kg 
Fuel Tank Capacity  
Reserve Fuel Capacity  
Carrying Details and Capacity  
Front Suspension  
Front Suspension Travel  
Rear Suspension  
Rear Suspension Travel  

Yamaha U7E Engine and Transmission Technical Data

Engine type - Number of cylinders Single cylinder, two-stroke 
Engine details  
Fuel system  
Engine size - Displacement - Engine capacity 72.00 ccm (4.39 cubic inches) 
Bore x Stroke 47.0 x 42.0 mm (1.9 x 1.7 inches) 
Compression Ratio 6.8:1 
Number of valves per cylinder  
Camshaft Valvetrain Configuration  
Maximum power - Output - Horsepower 4.90 HP (3.6 kW) @ 6500 RPM 
Maximum torque  
Engine Maximum RPM  
Cooling system Air 
Lubrication system  
Engine oil capacity  
Exhaust system  
Gearbox 3-speed 
Transmission type, final drive ratio  
Clutch type  
Driveline  

Yamaha U7E Performance

Top Speed 85.0 km/h (52.8 mph) 
Acceleration 0 to 100 km/h (0 to 62 mph)  
Acceleration 0 to 400m (1/4 mile)  
Recuperation 60 to 140 km/h in highest gear  
Fuel Consumption - MPG - Economy - Efficiency  
CO2 emissions  
Emissions  

Yamaha U7E Electrical Systems, Ignition and Equipment

Ignition Type  
Electrical Details  
Starter Type  
Instruments  
Lights