1972 Yamaha AS3 Twin 125cc Specifications and Pictures

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Old Classic Motorcycles 1972 Yamaha AS3 Pictures

1972 Yamaha AS3 Twin 125cc

Yamaha AS3/YAS3, 125cc 2 Stroke Twin, manufactured in 1971. My RD250 one definitely does but the AS3 seat is a good bit better and I'm going to bypass the welding stage and re-fit the foam and new cover and see how it goes as it is. Its not laziness, more that but I am having big problems with my welder just now and can't see it being resolved soon but am desperate to press on with the rebuilds.

Vintage Bikes Yamaha AS3 Twin 125cc

1972 Yamaha AS3 Twin TECHNICAL SPECIFICATION
Model ID
Manufacturer (Make) Yamaha
Model Name AS 3
Year 1972
Category(class) Classic
Engine
Engine Capacity (Displacement) 125 ccm (7.63 cubic inches)
Engine Type Twin
Bore x Stroke Ø43.0 mm x 43.0 mm (Ø1.69 inches x 1.69 inches)
Bore/Stroke Ratio 1
Stroke 2
Timing System PORT CONTROL
Cooling System Air
Powertrain
Gearbox 5 speed
Chassis/Suspension/Brakes
Front Brakes Drum
Rear Brakes Drum
Front Tire 2.50-18
Rear Tire 2.75-18
Dimensions
Curb Weight 105 kg (231 lb)
Fuel Capacity 9 litres (2.38 gallons)
Performance
Max Power 16.00 HP (11.7 kW) at 9800 RPM
Power/Weight Ratio 0.15 Hp/Kg
Top Speed 127 km/h (79mph)
Acceleration (dart, speedup) time
0-100 km/h 10.1 seconds
0-60 mph 9.6 seconds
1/4 mile
-
60 to 140 km/h, highest gear