Lambretta A/B/C/D/E/F/J/Lui
LAMBRETTA
A 125 ccm 2T AC '47-'48

LAMBRETTA A 125 cc 2T AC '47-'48

Photo from LAMBRETTA A 125 cc 2T AC '47-'48 | LAMBRETTA

Overview Lambretta 125 A

The Lambretta 125 A marked the start of production at Innocenti and was manufactured in Milan from October 1947. In its first year of production until October 1948, 9,669 units were built. This scooter was remarkably fast and inexpensive for its time, reached almost 65 km/h and was characterised by low fuel consumption. Its design was uncomplicated and consisted mainly of two parts: The front section comprised a pressed square tube to which the Steering Head and Fork were attached, while the rear section consisted of two curved chrome tubes that enclosed the Tank and ended in a spacious Glovebox.
The scooter's suspension is quite simple: At the front it has two simple Springs, while at the rear there is no suspension and damping is limited to the air cushion of the 7-inch Tyres. Another striking feature of the Lambretta 125 A is its clear and clean look, which it owes to the internal routing of all wires and cables in the pipes. However, this design also has a disadvantage: the internal routing of the cables means that replacing them involves considerable effort.

Lambretta 125 A model history

Innocenti continued to develop the 125 A model, resulting in three different series. During this period, the company used surplus colours that were originally produced in large quantities for military purposes. This allowed Innocenti to offer a variety of colours.

125 m (A) - 1st series (up to frame number ~ 6900)

This version had a square, light brown front seat, with the pillion seat available in black as an optional Replacement Parts. The Glovebox was fitted with a Lock, which also served as the Ignition Lock. The rims were chrome-plated as standard and attached directly to the Brake Drum with three chrome-plated nuts. The Horn was operated mechanically with the foot, and the first series had a Flywheel Cover painted in the vehicle colour. The gearshift pedal was straight, the Brake Pedal was at the rear right and the Centre Stand had no Spring but was hooked in manually.

125 m (A) - 2nd series (up to frame number ~ 11000)

The front seat now had a classic triangular shape with barrel springs and was smaller than in the third series, with a beige cover. The pillion seat, also as an accessory and covered in beige, was added. The luggage compartment lock was replaced by a simple Lever, and the mechanical Horn gave way to a 6V buzzer. There was now a kill switch in place of the lever for the mechanical Horn. The rims were painted silver instead of chrome-plated, and the rear Rim was fitted with separate nuts. The gearshift pedal was slightly angled, and from around frame number 10,000 the Brake Pedal was moved to the rear left-hand side.

125 m (A) - 3rd series (up to frame number ~ 14700)

The Brake Pedal remained on the left side, as on the last vehicles of the second series. The suspension of the driver's seat now consisted of a central, horizontal Spring, and the upholstery was brown. The Centre Stand of the third series, welded together from several individual parts, was made of grey cast iron and fitted with a Spring.

The Engine of the Lambretta 125 A

The Engine of the Lambretta 125 A is a 123 cubic centimetre, wind-cooled engine with a cardan drive. A striking feature is the 3-speed gearbox, which is operated by means of a foot-operated gearstick - a characteristic feature found especially in the A series.

Used Lambretta 125 A market situation

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Miscellaneous Lambretta 125 A

A unique and fascinating detail that is exclusive to the Lambretta 125 A is the integrated metal oil measuring cup, which is incorporated into the green plastic tank cap. In this day and age, this design by Innocenti may be considered unusual, especially with regard to the braking system: the Brake Pads are made entirely of steel, while the Brake Pads are firmly anchored in the brake drums.

The colours of the Lambretta 125 A

Colour

Colour name

Colour code

Colour info

avorio-8028

Avorio

8028

bluette-8017

Bluette

8017

rosso-8020

Rosso

8020

verde-olivia-8022

Verde Olivia

8022

General Information

  • Producer LAMBRETTA
  • Model A
  • Displacement 125 ccm
  • Cycles and cooling 2T / AC
  • Year of construction '47-'48
  • Chassis number (from/to) 5001-&gt
  • Built quantity 9669
  • Dimension LAMBRETTA
  • Vehicle type Lambretta A/B/C/D/E/F/J/Lui

Years of production & chassis numbers

  • Year of construction:

Technical data

  • Chassis type: open tubular steel frame
  • Length: 1620 mm
  • Width: 650 mm
  • Height: 880 mm
  • Seat height: 665 mm
  • Wheelbase: 1220 mm
  • Ground clearance: 90 mm
  • Weight (empty): 72 kg
  • Turning circle: 1500 mm
  • Performance (PS): 4.2 PS
  • Performance (kW): 3.09 kW
  • at rpm: 4400
  • Top speed: 68 km/h
  • Engine type: 2-stroke internal combustion engine
  • Engine manufacturer: Innocenti
  • Engine number: Tipo 2 M.5001☆ f.
  • position of engine number: right side Engine behind Carburettor

Engine - cylinders, clutch & exhaust

  • Displacement: 123 ccm
  • Bore: 52 mm
  • Stroke: 58 mm
  • Number of cylinders: 1
  • Transfer ports: 2
  • Type of cooling: Air
  • Compression: 6:1
  • Starter: Kickstarter
  • Clutch: Multi-disc clutch in oil bath on the Crankshaft
  • Clutch type: Ø 85mm, 3 Clutch Friction Plates, 6 Springs

Engine - Carburetor

  • Mixture preparation: Carburetor
  • Type of carburetor: Dell'Orto MA 16
  • Main jet: 65

Engine - Transmission

  • Type of gearbox: Foot control
  • Number of gears: 3
  • Gear rotation: 1st gear: (12,3)
  • Gear rotation: 2nd gear: (6,12)
  • Transmission: 3rd gear: (4,17)

Engine - Ignition

  • Ignition type: Interruptor ignition
  • Ignition timing: 26 °
  • Battery voltage: 6 V
  • Charging power (ignition): 30 W
  • Spark plug type: NGK B8HS / Bosch W4AC
  • Spark plug thread: short thread

Chassis - tires and rims

  • Front tyre(s): 3.50x7
  • Front rim(s): 2.10x7
  • Rear tyre(s): 3.50x7
  • Rear rim(s): 2.10x7
  • Front tyre pressure: 1,0
  • Rear tyre pressure: 1,8 - 2,0

Chassis - Brakes

  • Brake system: Drum Brake
  • Front brake: Ø inside 100 mm
  • Front brake operation: mechanical with Cable
  • Rear brake: Ø inside 140 mm
  • Rear brake operation: mechanical with Cable

Chassis - steering column & swing arm

  • Front suspension: only bearing bush rubber-mounted
  • Rear suspension: none

Electronics

  • Alternator: 6V
  • Headlights: 6V 25/25W BA20d
  • Horn: mechanical actuation with the foot

Operating materials

  • Fuel tank capacity: 6.8 l
  • Included reserve: 0.8 l
  • Mixing ratio: 1:50
  • Range (approx.): 277 km
  • Gearbox oil: SAE 50
  • Amount of gearbox oil: 0.5 l
  • Fuel consumption: 2.45 l/100km

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