Motorcycles Specs > Yamaha > Yamaha YAS1

Yamaha YAS1 Specs

(1971)
The Yamaha YAS1 model is a Classic bike manufactured by Yamaha . In this version sold from year 1971 , the dry weight is  and it is equiped with a Twin, two-stroke motor. The engine produces a maximum peak output power of  and a maximum torque of  . With this drive-train, the Yamaha YAS1 is capable of reaching a maximum top speed of  . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the Yamaha YAS1 have a  frame with front suspension being  and in the rear suspension it is equiped with  . Stock tire sizes are 2.25-17 on the front, and 2.50-17 on the rear. As for stopping power, the Yamaha YAS1 braking system includes  size  at the front and Expanding brake (drum brake) size  at the rear. 

Yamaha YAS1 General Information

Brand Yamaha 
Model Yamaha YAS1 
Start year 1971 
Year 1971 
Category Classic 
Factory Warranty (Years / miles)

Yamaha YAS1 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 2.25-17 
Rear Tyres - Rims dimensions 2.50-17 
Front brakes
Rear brakes Expanding brake (drum brake) 
Front Brakes Dimensions - Disc Dimensions
Rear Brakes Dimensions - Disc Dimensions
Curb Weight (including fluids)
Dry Weight
Front Percentage of Weight
Rear Percentage of Weight
Weight-Power Output Ratio :
Fuel Tank Capacity
Reserve Fuel Capacity
Carrying Details and Capacity
Front Suspension
Front Suspension Travel
Rear Suspension
Rear Suspension Travel

Yamaha YAS1 Engine and Transmission Technical Data

Engine type - Number of cylinders Twin, two-stroke 
Engine details
Fuel system Carburettor 
Engine size - Displacement - Engine capacity 125.00 ccm (7.63 cubic inches) 
Bore x Stroke
Compression Ratio
Number of valves per cylinder
Camshaft Valvetrain Configuration
Maximum power - Output - Horsepower
Maximum torque
Engine Maximum RPM
Cooling system Air 
Lubrication system
Engine oil capacity
Exhaust system Double stainless steel pipes 
Gearbox
Transmission type, final drive ratio Chain 
Clutch type
Driveline

Yamaha YAS1 Performance

Top Speed
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 YAS1 Electrical Systems, Ignition and Equipment

Ignition Type
Electrical Details
Starter Type
Instruments
Lights