J 50
J 50

Lambretta Junior

In 1964, Innocenti launched the Junior series, 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.

J50

There are three different versions of the J50. The first version, with a displacement of 50 cc and a three-speed gearbox, produces an impressive 1.47 hp and reaches a dizzying top speed of 40 km/h. The 10-inch tires were replaced by the 2.75-9" format in the second version. Although the J50 has a double seat as standard, there is no speedometer or steering lock. The third version introduced a four-speed gearbox and the frame was significantly modified. The leg shield became significantly narrower and more stable. The seat also became narrower to match. Despite the four-speed gearbox, the J50 does not get any faster.
The four-speed J50 was replaced in January 1968 by the J50 De Luxe, which again had the three-speed gearbox. The De Luxe has a sporty single seat and a rear luggage rack. The leg shield is framed with chrome edging. The latches on the side covers are similar to those on the DL series. The tires are now back on 3.00-10" tires.

Type:
Displacement:
Year of construction:
Quantity:
Code:
1st frame no.:
J50
50 ccm
10/64 to 11/65
69.988
-
400.001


J50 - 1st version
(1964)

Nine inch tires, wide leg shield without surround, kick starter made of aluminum, flat frame under the rear light, front fork with rubber buffers for bolting.



J50 - 2nd version
(1965 to mid-1966)

Nine-inch tires, wide leg shield with rubber edging, chrome-plated aluminum kickstarter, front fork with rubber pads for insertion, J50 lettering stamped on the frame under the rear light.



J50 - 3rd version
(mid 1966 to 1967)

New 125 (4-speed) frame with narrow leg shield, 9-inch tires, double seat, J50 lettering stamped on the frame under the rear light and reinforced engine silent blocks. Official designation "Model '66"



J50 - 4th version
(late 1967 to early 1968)

Side hoods with DL-style closures.



Original paint (Lechler)

J50:
Bianco Nuovo (white)
8059
Farbkarte
Verde Mela (apple green)
8039
Farbkarte
Azzurro Acquamarina (water blue)
8030
Farbkarte
Viola Palido (Purple)
8069
Farbkarte
Rosso Rubino (Ruby red)
8047
Farbkarte

2-color models:
Verde Oliva Chiaro (light olive)
8079
Farbkarte
Verde Oliva Scuro (Dark Olive)
8078
Farbkarte

J50 Deluxe:
Bianco Nuovo (White)
8059
Farbkarte
Verde Mela (Apple green)
8039
Farbkarte
Azzurro Acquamarina (water blue)
8030
Farbkarte

J50 Special:
Turchese (turquoise)
8016
Farbkarte
Rosso (Red)
8073
Farbkarte
Giallo Ocra (Ochre)
8080
Farbkarte
Vehicle (general)
Designation
J 50
VIN
J50,50DL
Year of construction
1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971
Number of units built
112439
Colors
turchese (8016), azzuro acquamarina (8030), verde mela (8039), bianco nuovo (8059)
 
Vehicle engine
Motor type
2-Takt
Emission standard
keine
Displacement
49.8 cm³
Stroke
58 mm
Drill hole
38 mm
Motor type
2-Takt
Number of cylinders
1
Type of cooling
Luft
Power (kW)
1.8 kW
Power (PS)
1.47
rpm (p max)
4500
Compaction
1:7.75
Mixture preparation
Vergaser
Carburetor
Dell'Orto SHB 18-12
Starter
Kickstarter
Clutch
Manuell
Motor manufacturer
Innocenti
V max
38.5 km/h
 
Vehicle dimensions
Length
1660 mm
Width
630 mm
Height
1000 mm
Seat height
770 mm
Wheelbase
1190 mm
Gasoline tank capacity
6.2 Ltr.
of which reserve (gasoline)
1 Ltr.
Weight (empty)
78 kg
Weight (max)
150 kg
 
Vehicle tires
Front tires
3.00 - 10, 2.75 - 9
Rear tires
3.00 - 10, 2.75 - 9
Front rim
1.75 - 9
Rear rim
1.75 - 9
 
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
21
Distance contacts
0.4 mm
Power (light)
18 W
Tension
6 V
 
Vehicle Engine - Gearbox
Gearbox type
manuell
Number of gears
3
Complete translation - 1:
8.182
Translation Primary - 1:
3.21
Gear ratio 1 - 1:
6.9
Gear ratio 2 - 1:
4
Gear ratio 3 - 1:
2.5454
 
Vehicle fuels
Fuel
Super (ROZ 95)
Mixing ratio
1:50
Gear oil
SAE80
Quantity of gear oil
0.5 Ltr.
 
General
Code (new)
INNOCENTI_J50