These are the known mechanical and performance specifications for your 1968 Yamaha AS1.
Basic Specs
Engine
Displacement125.00 ccm (7.63 cubic inches)
Type
DetailsTwin, two-stroke
Max RPM8500
Compression7.0:1
Bore/Stroke43.0 x 43.0 mm (1.7 x 1.7 inches)
Valves/Cylinder
FuelingCarburettor
IgnitionPoints
ExhaustTwin chrome
LubricationAutolube
CoolingAir
Performance
Horespower15.00 HP (10.9 kW)
Torque12.74 Nm (1.3 kgf-m or 9.4 ft.lbs)
Top Speed120.7 km/h (75.0 mph)
Fuel Economy & Polution
Fuel Consumption
Fuel Capacity9.46 litres (2.50 gallons)
Emissions
Chassis
Frame TypeSteel tube
Rake
Trail
Front SuspensionTelescopic
Front Travel
Rear SuspensionSwinging arm, coil spring oil damper
Rear Travel
Seat
Seat Height
Alt. Seat Height
Total Height1,011 mm (39.8 inches)
Total Length1,854 mm (73.0 inches)
Total Width671 mm (26.4 inches)
Ground Clearance150 mm (5.9 inches)
Wheelbase1,072 mm (42.2 inches)
Dry Weight98.0 kg (216.0 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre-20.5
Rear Tire/Tyre
Front BrakesExpanding brake (drum brake). single leading shoe
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments
Great classic