Lambretta I 125 3m

  • I 125 3M

Lambretta I 125 3m.

Technical Specification

Model I 125 3m
Amount Produced 21651
Production Dates September 1964 – September 1966
Frame Prefix j125
Engine Prefix j125
Frame Starting Number 600001
Engine Starting Number 600001
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 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 11/48 1: 4,36
2nd 16/42 1: 2,63
3rd 21/37 1: 1,76 – 86,7 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 2lts per 100km
Fuel Capacity 6.2lt
Max Speed 86.7kmh
Initial Price 125.000 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 Metllic Grey 8060
Metallic Blue 8062