J 100 (cento)
J 100 (cento)

Lambretta Junior 100

In 1964, Innocenti launched the Junior series and with it a completely new family of scooters. The simple scooters were intended to attract new groups of buyers at a lower price.

The concept of the vehicles has some similarities with Piaggio vehicles. For example, the chassis is self-supporting and access to the air filter is located under the driver's seat beneath a small plastic tub. The engine, on the other hand, is located centrally in the frame and is clearly based on the design of the Li engines. The cylinder of the Juniors is different. Depending on the model, a seat bench, a single seat or two single seats were installed.

The engine is hidden under side covers, most of which had external locking levers. The rubber parts were completely gray, except for the kickstarter and stand feet, which were also black.

J100
The Cento was the first vehicle in the J series to appear. This was a small mistake on Innocenti's part. The market research had made a small mistake, according to which an engine with 98 cc would have the highest sales potential in various markets. This turned out to be wrong and was soon followed by the J125. Both the Cento and the J125 had a double seat, three-speed gearbox and 3.00-10" tires. The Cento produced 4.7 hp and scratched the 80 km/h barrier, while the J125 broke the 80 km/h barrier with 5.8 hp.
By November 1965, 17,642 of the Cento had been built, while 21,651 of the J125 had been built by October 1966.



Type:
Displacement:
Year of construction:
Number of units:
Code:
1. frame no.:
J100
100 ccm
03/64 to 11/65
17.642
100LB
800.001


J100 - one version
(March 1964 to November 1965)

No changes during production. From December 1964 the handlebar lock is no longer round but rectangular.



Original paint (Lechler)

Avorio Chiaro (light ivory)
8054
Farbkarte
Vehicle (general)
Designation
J 100 (Cento)
VIN
100LB
Year of construction
1964, 1965
Number of units built
17642
Colors
avorio chiaro (8054)
 
Vehicle engine
Motor type
2-Takt
Emission standard
keine
Displacement
98 cm³
Stroke
48 mm
Drill hole
51 mm
Motor type
2-Takt
Number of cylinders
1
Type of cooling
Luft
Power (kW)
3.46 kW
Power (PS)
4.7
rpm (p max)
5300
Compaction
1:7.5
Mixture preparation
Vergaser
Carburetor
Dell'Orto SHB 16-18
Starter
Kickstarter
Clutch
Manuell
Motor manufacturer
Innocenti
V max
77 km/h
 
Vehicle dimensions
Length
1690 mm
Width
630 mm
Height
1020 mm
Seat height
770 mm
Wheelbase
1190 mm
Gasoline tank capacity
6.2 Ltr.
of which reserve (gasoline)
1 Ltr.
Weight (empty)
90 kg
Weight (max)
230 kg
 
Vehicle tires
Front tires
3.00 - 10
Rear tires
3.00 - 10
Front rim
2.10 - 10
Rear rim
2.10 - 10
 
Vehicle brake system
Front brake type
Trommelbremse
Type of rear brake
Trommelbremse
Ø front
150 mm
Ø rear
150 mm
Front brake actuation
mechanisch mit Seilzug
Rear brake actuation
mechanisch mit Seilzug
 
Vehicle chassis
Chassis type front
Schwinge gezogen, nur Feder
Rear suspension type
getrenntes Feder/Dämpfer-System
 
Vehicle engine - ignition system
Spark plug
(NGK) B7ES
Type of ignition
Kontaktzündung
Pre-ignition
24
Distance contacts
0.4 mm
Power (light)
33 W
Tension
6 V
 
Vehicle Engine - Gearbox
Gearbox type
manuell
Number of gears
3
Complete translation - 1:
5.97
Translation Primary - 1:
3.21
Gear ratio 1 - 1:
4.8
Gear ratio 2 - 1:
2.87
Gear ratio 3 - 1:
1.86
 
Vehicle fuels
Fuel
Super (ROZ 95)
Mixing ratio
1:50
Gear oil
SAE80
Quantity of gear oil
0.5 Ltr.
 
General
Code (new)
INNOCENTI_J100