Lambretta A/B/C/D/E/F/J/Lui
LAMBRETTA
Junior 100 100 ccm 2T AC 1964-1965

LAMBRETTA Junior 100 100 cc 2T AC 1964-1965

Photo from LAMBRETTA Junior 100 100 cc 2T AC 1964-1965 | LAMBRETTA

Overview Lambretta Junior 100 & 125

The "cento" or "hundred" refers to its engine displacement of 98 to 100 cc, although the model was officially known as the J98 and a variant with a larger 125 cc engine was known as the J125. These models were characterised by a steel monocoque frame with two Side Parts and the absence of a horn casting.

Model history Lambretta Junior 100 & 125

The rear suspension, which was directly connected to the Engine - similar to larger Models - allowed swivelling mounting by means of front Holders. However, the Spring and damping units were designed as two separate components and the engine mounts did not provide a particularly smooth ride, as many machines tended to vibrate. The front suspension consisted of a trailing arm with Springs built into the front fork, sitting on Fitting Rubber Buffers, with 3.00*10 Tyres and Drum Brakes front and rear. Production of the J100 ended in November 1965 after 17,642 units, while production of the J125 continued until October 1966. Although the J series was not a resounding success overall, it nevertheless demonstrated Innocenti's willingness to diversify in order to increase customer satisfaction and boost the sales and profits of its product range.

The Engine of the Lambretta Junior 100 & 125

They were equipped with a two-cylinder engine in vertical design, similar in construction to the Li series, but combined with a 3-speed gearbox. The 98 cc model achieved an output of 4.7 hp and a maximum speed of 74 km/h, while the 125 cm variant with 5.8 hp achieved a speed of 86 km/h, making it competitive with larger models.

Situation used market Lambretta Junior 100 & 125

Where do you look for this vehicle?

The colours of the Lambretta Junior 100 & 125:

Colour

Colour name

Colour code

Colour info

avorio-chiaro-8054

Avorio Chiaro

8054

General Information

  • Producer LAMBRETTA
  • Model Junior 100
  • Displacement 100 ccm
  • Cycles and cooling 2T / AC
  • Year of construction 1964-1965
  • Built quantity 17643
  • 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 centre tube steel frame
  • Length: 1690 mm
  • Width: 630 mm
  • Height: 1020 mm
  • Seat height: 770 mm
  • Wheelbase: 1190 mm
  • Weight (empty): 90 kg
  • perm. total weight: 230 kg
  • Performance (PS): 4.7 PS
  • Performance (kW): 3.46 kW
  • at rpm: 5300
  • Top speed: 77 km/h
  • Engine type: 2-stroke internal combustion engine
  • Engine manufacturer: Innocenti
  • Engine number: L100 oder ESP 124/1
  • position of engine number: upper edge of right-hand Crankcase at Kickstart Lever height

Engine - cylinders, clutch & exhaust

  • Displacement: 98 ccm
  • Bore: 51 mm
  • Stroke: 48 mm
  • Number of cylinders: 1
  • Transfer ports: 2
  • Type of cooling: Air
  • Compression: 7,5:1
  • Starter: Kickstarter
  • Clutch: Multi-disc clutch in oil bath on Input Shaft

Engine - Carburetor

  • Mixture preparation: Carburetor
  • Type of carburetor: Dell'Orto SHB 16.18
  • Main jet: 70
  • Idle jet: 40
  • Choke jet: 50

Engine - Transmission

  • Type of gearbox: Manual gearstick
  • Number of gears: 3
  • Gear rotation: 1st gear: 10:48 Z (4,80)
  • Gear rotation: 2nd gear: 15:41 Z (2,73)
  • Transmission: 3rd gear: 17:39 Z (2,29)
  • Gear rotation: Total: im 3. Gang: 7,35
  • Transmission: Primary: 14:45 Z (3,21)

Engine - Ignition

  • Ignition type: Interruptor ignition
  • Ignition timing: 24 °
  • Battery voltage: 6 V
  • Charging power (ignition): 33 W
  • Spark plug type: NGK B7ES Bosch W5CC
  • Spark plug thread: long thread

Chassis - tires and rims

  • Front tyre(s): 3.00x10
  • Front rim(s): 2.10x10
  • Rear tyre(s): 3.00x10
  • Rear rim(s): 2.10x10
  • Front tyre pressure: 1,4
  • Rear tyre pressure: 2,0-2,4

Chassis - Brakes

  • Brake system: Drum Brake
  • Front brake: Ø inside 150 mm lining width: 22 mm
  • Front brake operation: mechanical with Cable
  • Rear brake: Ø inside 150 mm lining width: 22 mm
  • Rear brake operation: mechanical with Cable

Chassis - steering column & swing arm

  • Front wheel guide: drawn short swing arm
  • Rear wheel guide: Drive set swing arm
  • Front suspension: 170 mm Springs inside
  • Rear suspension: Shock Absorber L 280 mm, separate damper spring

Electronics

  • Alternator: 6V - 33W, swing light magneto ignition
  • Headlights: 6V 25/25W BA20d
  • Parking light: 6V 5W Festoon Bulb
  • Taillights: 6V 3W BAY15d
  • Brake lights: 6V 15W BAY15d
  • Horn: 6V AC

Operating materials

  • Fuel tank capacity: 6.2 l
  • Included reserve: 1 l
  • Mixing ratio: 1:50
  • Range (approx.): 332 km
  • Gearbox oil: SAE 80
  • Amount of gearbox oil: 0.5 l
  • Fuel consumption: 1.87 l/100km

Explosion for this vehicle type

Spare parts exploded views

Spare parts exploded views

Our online exploded views for scooters make it much easier for you to find the right part. Each item is assigned exactly to the corresponding vehicle, with year of manufacture and chassis number. From our Expo lists, you can navigate directly to the spare parts, where a photo and a description are then available for almost every part. Conversely, you can also navigate from the item detail to the corresponding exploded view.

Notepad for this model

Our product recommendations for this model

×