Lambretta I 125 4m (Starstream)

Lambretta I 125 4m (Starstream).

Technical Specification

Model	I 125 4m
Amount Produced	16052
Production Dates	May 1966 – April 1969
Frame Prefix	j125
Engine Prefix	J125-4
Frame Starting Number	150001
Engine Starting Number	150001
Homologation	3689 OM
Engine	122.5cc, two stroke, 57x58mm
Power and Rate	5.8hp at 5300rpm
Compression Ratio	1:7.45
Head and Cylinder	Aluminium and cast iron
Engine Cooling	Forced Air
Ignition	Ducati magneto
Spark Advance	23' – 25' 2.4 – 2.8 mm before top dead center
Point Setting	.35-.45 mm
Carburetor	dell'orto SHB 18/16
Choke	16mm
Slide	6492/1
Needle	N/A
Atomiser	N/A
Main Jet	72
Pilot Jet	40
Starter	50
Float	3.5 Grams
Starter	Pedal
Crankcase oil	Agip Rotra SAE 90 360cc
Transmission Oil
Oil / Gas Mix	2%
Clutch	Multiple discs in oil bath
Gears	4 speed with hand shifter
1st	11/48 1: 4,36
2nd	14/44 1: 3,14
3rd	16/37 1: 2,31
4th	19/34 1: 1,79 – 67,9 kmh
Secondary Transmission	Simplex chain
Secondary Transmission
Frame	Monocoque frame of 1190mm
Front Suspension	Oscilating conecting rods
Rear Suspension	Torsion bar attached to motor with a single shock
Wheels	Dismountable wheels
Tires	3.00 x 10 pirelli or ceat
Tire Presure	Front 1.3 ATM, rear 2 ATM
Brakes	Drum
Dry Weight	9kg
Km Per Gallon	1.98lts per 100km
Fuel Capacity	6.2lt
Max Speed	87kmh
Initial Price	133.000 Italian Lira
Electrical System	6 volt
Sparkplug	Bosch 240 long thread
wheel Base	1190mm
Maximum Length	1690mm
Ground Clearance
Maximum Seat Hight
Minimum Turning Radius
Maximum Width	630mm
Maximum Hight	1030mm
Colour	Pastel Blue A 04T (suzuki)