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Vespa 160 GS

Make Model	Vespa 160 GS
Year	1962 - 64
Production	59 999 units
Engine	Two stroke, single cylinder
Capacity	145.5 cc / 8.9 cub in
Bore x Stroke	57 x 57 mm
Compression	7.4:1
Carburetor	Dell'Orto SI 27/23
Cooling	Air cooled, forced
Fuel Mixture	1:50
Ignition	Flywheel and magneto with 35W output
Starting	Kick start
Battery	6V
Clutch	Wet, multiplate
Max Power	5.9 kW / 8 hp @ 6500 rpm
Transmission	4 Speed, grip-shift, constant mesh
Gear Ratios	1st 14.47 / 2nd 10.28 / 3rd 7.61 / 4th 5.84:1
Final Drive	Direct drive
Frame	Pressed sheet steel, streamlined monocoque structure
Front Suspension	Single unit front damper and spring
Rear Suspension	Coil spring with damper
Front Brakes	125 mm drum
Rear Brakes	127 mm drum
Wheels	Interchangeable
Front Tyre	3.5 x 10"
Rear Tyre	3.5 x 10"
Dimensions	Length: 1795 mm / 71 in Width: 710 mm / 28 in Height: 1045 mm / 41 in
Wheelbase	1220 mm / 48 in
Ground Clearance	220 mm / 8.7 in
Turning Circle	1400 mm / 55 in
Dry Weight	110 kg / 243 lbs (incl. spare wheel)
Fuel Capacity	7.5 L / 2.0 US gal
Consumption average	2.1 L/100 km / 48 km/l / 112 US mpg
Acceleration: 0 - 75 km/h / 47 mph	17.5 sec
Top Speed	100 km/h / 62 mph

The 160 GS was introduced in 1962 and represented a significant departure from t eh basic design of the 150 GS. Essentially the body, motor and suspension of the 150 GS was scrapped and Piaggio went about creating the evolution of the Vespa 125/150 into the totally new 160 GS. Some of the major changes were;

Entirely new and slimmer frame
Physically larger
Front mudguard much larger and cowls redesigned
Left side cowl now detachable and glovebox replaced with space for a sparewheel
Steering lock
Shape and size of seats changes
New engine and upgraded crankshaft and bearings were enlarged
Motor integrated with the swing-arm
Dell'Orto SI 27/23 carburettor with integrated choke
New flywheel and magneto with an output of 35 W
Suspension and brake drums changed. Front damper and spring in a single unit
Rim now split in the middle rather than off-set