LD 125 (1951-55)
LD 125 (1951-55)

Lambretta 125 D & LD – Model History

Introduction and Development

Lambretta D & LD 125

In December 1951, Innocenti introduced the 125 D models with a completely redesigned frame and significantly improved suspension. The tank, glove box, and seat solution remained unchanged. Essentially, the D is an improved C model. Besides the frame, the appearance is also very close to the C models.

The engine is a completely new design with an MA18 carburetor. The cylinder is cast iron, and the air-cooled cylinder head is aluminum. The three-speed gearbox is operated via Teleflex cable. Power increases to 5 HP and the speed reaches nearly 80 km/h.

Ribbed brake drums front and rear improved braking performance. The rear brake on early versions was still operated via linkage as found on the C & LC. The front suspension is integrated into the fork, a concept that Innocenti consistently retained up to the DL. At the rear, a torsion suspension is used.

Technical Data

Type:
Capacity:
Production period:
Quantity:
Production code:
1st frame no.:
125 LD
125 cc
12/51-10/55
110,334
125LD
00.001

Type:
Capacity:
Production period:
Quantity:
Production code:
1st frame no.:
125 LD (Elestart)
125 cc
02/54-12/54
8,694
125LD
00.001


125 D & LD – Versions

125 D & LD – 1st Version (1951/52)

Chromed handlebar with aluminum end caps, front brake like the C, rear brake via linkage with small pedal (from mid-1952 larger pedal operated by cable), black two-position light switch with chrome cover, horn with 'flower' cover, flat fork cover (from mid-1952 with cut-outs for larger bushings), rigid engine mount (from mid-1952 with silent blocks). LD only: side panels with chrome grilles, Lambretta aluminum logo on the leg shield and Innocenti emblem above the headlight.

125 D & LD – 2nd Version (1953)

Adjustable aluminum handlebar, plastic brake and clutch levers, front brake enlarged to 125 mm, passenger strap, ivory plastic light switch with two positions, horn with standard cover (from February 1953). LD only: side panels with plastic grille and plastic LD emblem on the leg shield. (Early 1953 LD models still had version 1 side panels.)

125 D & LD – 3rd Version (1954)

Brake and clutch levers with adjusters for the cables, dark green seat covers, white three-position light switch with chrome cover (from mid-1954), grips with end pieces. LD only: larger seats, front closed (from mid-1954) with dark green covers, by late 1954 the LD received rubber covers for the cables at the handlebar.

Original Paint (Lechler)

Verde Olivia (Olive green)
8021
Color chart
Beige Sabbia (Sand)
8029
Color chart
Camoscio Chiaro (Mustard yellow)
8055
Color chart
Vehicle (general)
Designation
LD 125 (1953-55)
VIN
125LD
Year of construction
1951, 1952, 1953, 1954, 1955
Number of units built
110334
Colors
verde oliva (8021), beige sabbia (8029), beige (8055)
 
Vehicle engine
Motor type
2-Takt
Emission standard
keine
Displacement
123 cm³
Stroke
58 mm
Drill hole
52 mm
Motor type
2-Takt
Number of cylinders
1
Type of cooling
Luft
Power (kW)
3.84 kW
Power (PS)
5.2
rpm (p max)
4750
Compaction
1:6.5
Mixture preparation
Vergaser
Carburetor
Dell'Orto MA18 B2, Zenith 19 MCT
Starter
Kickstarter
Clutch
Manuell
Motor manufacturer
Innocenti
V max
78 km/h
 
Vehicle dimensions
Length
1770 mm
Width
740 mm
Height
960 mm
Seat height
760 mm
Ground clearance
110 mm
Wheelbase
1281 mm
Gasoline tank capacity
6.3 Ltr.
of which reserve (gasoline)
0.7 Ltr.
Weight (empty)
85 kg
 
Vehicle tires
Front tires
4.00 - 8
Rear tires
4.00 - 8
Front rim
2.50 - 8
Rear rim
2.50 - 8
 
Vehicle brake system
Front brake type
Trommelbremse
Type of rear brake
Trommelbremse
Ø front
100 mm
Ø rear
140 mm
Front brake actuation
mechanisch mit Seilzug
Rear brake actuation
mechanisch mit Seilzug, mechanisch mit Gestänge
 
Vehicle chassis
Chassis type front
Schwinge gezogen, nur Feder
Rear suspension type
Torsionsfeder
 
Vehicle engine - ignition system
Spark plug
(NGK) B8HS
Type of ignition
Kontaktzündung
Pre-ignition
27
Distance contacts
0.45 mm
Power (light)
30 W
Tension
6 V
 
Vehicle Engine - Gearbox
Gearbox type
manuell
Number of gears
3
Gear ratio 1 - 1:
12.9
Gear ratio 2 - 1:
7.5
Gear ratio 3 - 1:
4.75
 
Vehicle fuels
Fuel
Super (ROZ 95)
Mixing ratio
1:25
Gear oil
SAE50
Quantity of gear oil
0.5 Ltr.
 
General
Code (new)
INNOCENTI_LD125