Lambretta B 125
After the success of the model A, Innocenti quickly decided to develop an improved version. This is very much a natural progression of the model A, although the improvements are far from being only superficial. The model B boasts a number of significant technical improvements. The most important is the rear suspension, which gives a much more pleasant ride, especially in conjunction with the larger 8 inch wheels. The scooter is much more stable and also more comfortable due to a revised seating position.
The gearchange was moved from the floorboard to the handlebars and was now controlled by the patented Teleflex cable. The solution with a hand-operated twistgrip- gearchange was continued throughout the production of all subsequent Lambrettas. The other cables are now routed alongside the frame, which greatly enhances servicing. The capacity of the petrol tank was enlarged, too. As with the model A, there are a number of changes during the production run of the model B. For instance, the brakes were improved with the final models, as the pads are no longer liners inside the drum, but mounted to the shoes. Change of brake shoes becomes much easier this way. After
35.014 scooters made, production of the model B ceased in January 1950. All B models were painted in metallic colours.
Model: Capacity: Production period: Quantity: Production code: 1st frame no.: |
125 B 125 cc 11/48-01/50 35.014 - 00001 |
125 B – 1st version
(up to frame no. 20.000)
Heel-operated brake pedal, internal routed clutch cable, light switch on the headlight (moved to the righthand handlebars for the final 2.000 scooters of the first version), rubbers between tank and toolbox, kickstart with vertical bolt.
125 B – 2nd version
(up to frame no. 40.000)
Brake pedal at the front of the floorboards, externally routed clutch cable, no rubbers between tank and toolbox, kickstart with horizontal pin.
125 B – 3rd version
(up to end of production)
The seating of the rear spring is enlarged in diameter and held by screws. The two large rubber buffers under the toolbox rail disappear.
Rosso Met. 8023 |
|
Azzurro Met. 8024 |
|
Verde Met. 8025 |
|
Bronzo Met. 8053 |
Veicolo (generale) | |
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denominazione: | B 125 |
anno di costruzione: | 1948, 1949, 1950 |
numero telaio: | 125B |
numero esemplari prodotti: | 35014 |
colori: | azurro met (8024), camoscio met (8053), rosso met (8023), verde met (8025) |
Veicolo dimensioni | |
lunghezza: | 1680 mm |
larghezza: | 900 mm |
altezza: | 900 mm |
altezza dal suolo: | 120 mm |
interasse: | 1250 mm |
capacità serbatoio benzina: | 6.8 l |
di cui riserva (benzina): | 0.8 l |
peso (a vuoto): | 71 kg |
Veicolo ruote | |
pneumatico anteriore: | 3.50 - 8 |
pneumatico posteriore: | 3.50 - 8 |
cerchio ruota anteriore: | 2.50 - 8 |
cerchio ruota posteriore: | 2.50 - 8 |
Veicolo freni | |
tipo freno anteriore: | freno a tamburo |
azionamento freno anteriore: | meccanico con cavo |
Ø anteriore: | 100 mm |
tipo freno posteriore: | freno a tamburo |
azionamento freno posteriore: | meccanico con cavo |
Ø posteriore: | 140 mm |
Veicolo sospensione | |
tipo sospensione anteriore: | solo molla |
tipo sospensione posteriore: | solo molla |
Veicolo motore | |
cilindrata: | 123 cm³ |
corsa: | 58 mm |
alesaggio: | 52 mm |
tipo di motore: | 2 tempi |
numero cilindri: | 1 |
tipo di raffreddamento: | ad aria |
potenza (kW): | 3.09 kW |
potenza (CV): | 4.2 |
giri/min (P max): | 4400 |
rapporto di compressione: | 1:6 |
preparazione miscela: | carburatore |
carburatore: | Dell'Orto MA16 |
avviamento: | leva avviamento |
frizione: | manuale |
marca motore: | Innocenti |
velocità massima: | 68 km/h |
tipo motore: | 2 tempi |
normativa emissioni: | nessuna |
Veicolo motore - accensione | |
tipo di accensione: | accensione a puntine |
anticipo accensione: | 27 |
distanza contatti: | 0.45 mm |
potenza (luce): | 30 W |
tensione: | 6 V |
candela: | (NGK) B8HS |
Veicolo motore - ingranaggi cambio | |
tipo cambio: | manuale |
numero marce: | 3 |
rapportatura 1a marcia - 1:: | 9.25 |
rapportatura 2a marcia - 1:: | 6.38 |
rapportatura 3a marcia - 1:: | 4.35 |
Fahrzeug Betriebsstoffe | |
carburante: | Super (ROZ 95) |
rapporto miscela: | 1:25 |
olio ingranaggi: | SAE50 |
quantità olio ingranaggi: | 0.5 l |
I clienti cercavano in alternativa | |
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