Model D 125

  • D 125

The Lambretta model D updates the model C.

Technical Specification

Model D 125
Amount Produced 122641
Production Dates December 1951 – October 1954
Frame Prefix 125D
Engine Prefix 125D
Frame Starting Number 00001
Engine Starting Number 00001 and 100001 (2 Engine Production Lines with independant numbering)
Homologation 221
Engine 123cc, two stroke, 52x58mm
Power and Rate 5hp at 4600rpm
Compression Ratio 1:6.5
Head and Cylinder Aluminium and cast iron
Engine Cooling Air
Ignition Filso or Marelli magneto
Spark Advance Filso: 32 – 34 mm on the circumference of the flywheel. Marelli: 34 – 36.5 mm
Point Setting .40-.50 mm
Carburetor dell'orto MA16 B2 / Dell'orto MA 18 B3 / enith 18 MA
Choke B2: 18mm
Slide B2: 50 / B3: 75
Needle B2: D1
Atomiser B2: 255b
Main Jet B2 75 / B3 70 / MA 102
Pilot Jet B2: 40 / B3: 45
Starter N/A
Float B2: 6.5 grams
Starter Pedal
Crankcase oil Mobil Oil A 400 grams
Transmission Oil Mobil Lube GX140 100 grams
Oil / Gas Mix 5%
Clutch Multiple discs in oil bath
Gears 3 speed with hand shifter
Primary Transmission Gear
Secondary Transmission Shaft
Frame Steel tubing of strong 1281mm sections
Front Suspension Oscilating conecting rods
Rear Suspension torsion bar attached to motor
Wheels Dismountable wheels
Tires 4.00 x 8 pirelli or ceat
Tire Presure Front .7-8 ATM, rear 1.75 ATM
Brakes Drum
Dry Weight 70kg
Km Per Gallon 1lt per 50km
Fuel Capacity 5.6lt plus .7lt reserve
Max Speed 70-75kmh
Initial Price 135,000 Italian Lira
Electrical System 6 volt
Sparkplug Bosch 225 short thread
wheel Base 1281mm
Maximum Length 1770mm
Ground Clearance 740mm
Maximum Seat Hight 110mm
Minimum Turning Radius 1500mm
Maximum Width 740mm
Colour Olive Green 8021
Sand Beige 8029
Light Chamois 8055
Engine Colour Fiat 690