Lambretta I 50

I 50

Lambretta I 50.

Technical Specification

Model	I 50
Amount Produced	70078
Production Dates	October 1964 – January 1968
Frame Prefix	J50 (20/1)
Engine Prefix	j50
Frame Starting Number	400001
Engine Starting Number	400001
Homologation	3687 OM
Engine	49.8cc, two stroke, 38x44mm
Power and Rate	1.47hp at 4500rpm
Compression Ratio	1:7.75
Head and Cylinder	Aluminium and cast iron
Engine Cooling	Forced Air
Ignition	Ducati magneto
Spark Advance	20' – 22' 1.6 – 2 mm before top dead center
Point Setting	.35-.45 mm
Carburetor	dell'orto SH 18/12
Choke	12mm
Slide	N/A
Needle	N/A
Atomiser	N/A
Main Jet	62
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	3 speed with hand shifter
1st	10/69 1: 6,90
2nd	16/64 1: 4,00
3rd	22/56 1: 2,55 – 39 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	2.75 x 9 pirelli or ceat
Tire Presure	Front 1.5 ATM, rear 2.25 ATM
Brakes	Drum
Dry Weight	78kg
Km Per Gallon	1.58lts per 100km
Fuel Capacity	6.2lt
Max Speed	40kmh
Initial Price	109,000 Italian Lira
Electrical System	6 volt
Sparkplug	Bosch 225 long thread
wheel Base	1190mm
Maximum Length	1660mm
Ground Clearance
Maximum Seat Hight
Minimum Turning Radius
Maximum Width	630mm
Maximum Hight	1000mm
Colour	Aquamarine Blue 8030 (Version 3)
	Apple Green 8039 (Version 3)
	Ruby Red 8047 (Versions 1 & 2)
	New White 8059 (All versions)
	Purple 8069 (Version 3)
Two Tone Colour Option	Light Olive Green 8079 (Versions 1 & 2)
	Dark Olive Green 8078 (Versions 1 & 2)

Models

Lambretta I 50

Technical Specification