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Useful info about the History of the Lambretta
In 1922, Ferdinando Innocenti of Pescia built a steel-tubing factory in Rome. In 1931, he took the business to Milan where he built a better factory producing seamless steel tubing and employing about 6,000. During the Second World War, the factory was heavily bombed and destroyed. It is said that surveying the ruins, Innocenti saw the future of cheap, private transport and chose to produce a motor scooter – competing on cost and weather protection from the ubiquitous motorcycle.
Concept
The primary stimulus of the design style of the Lambretta and Vespa dates back to Pre-WWII Cushman scooters manufactured in Nebraska, USA. These olive green scooters were in Italy in huge numbers, ordered originally by Washington as field transport for the Paratroops and Marines. The Us military had used these to Nazi defence tactics of destroying roads and bridges in the Dolomites (a part of the Alps) in addition to the Austrian border areas.
Aeronautical engineer General Corradino D’Ascanio, accountable for the design and construction of the first modern helicopter by Agusta, was given the duty by Ferdinando Innocenti of designing a simple, robust and affordable vehicle. It had to be simple to drive for both males and females , be able to carry a passenger without having it get its driver’s clothes soiled.
The design
D’Ascanio, who hated motorbikes, created a revolutionary vehicle. This had been built on a spar frame which also has a handlebar gear change and the engine mounted directly onto the back wheel. The front protection “shield” kept the rider dry and clean compared to the open front end on motorcycles. The pass-through leg area design was aimed at women, as wearing dresses or skirts made riding conventional motorcycles difficult. The front fork, like an aircraft’s landing gear, allowed for straightforward wheel changing. The internal mesh transmission eliminated standard motorcycle chain, an origin of dirt and oil. This basic design allowed many features to end up being deployed relating to the frame which would later allow quick progression of new models.
However, General D’Ascanio fell out with Innocenti, who as opposed to a moulded and beaten spar frame wanted to produce his frame from rolled tubing, allowing him to revive both areas of his prewar company. General D’Ascanio disassociated himself with Innocenti and took his design to Enrico Piaggio who produced the spar-framed Vespa from 1946 on.
Into production
Going for a year longer to produce, the 1947 Lambretta featured a rear pillion seat for a passenger or optionally a storage compartment. The actual front protection “shield” was a flat piece of aero metal; later this developed into a twin skin providing additional storage at the ‘back of’/behind the leading shield, like the glove compartment in a vehicle. The fuel cap was underneath the (hinged) seat which saved the cost of an additional lock in the fuel cap or necessity for additional metal work on the smooth skin.
Deriving the name Lambretta from the small river Lambro in Milan, which ran near to the factory, Innocenti started production of Lambretta scooters in 1947 – the year after Piaggio started manufacture of its Vespa models. Lambrettas were manufactured under licence in Argentina, Brazil, Chile, Colombia, India and Spain, sometimes under other names but always to a recognizable design (e.g. Siambretta in South America and Serveta in Spain).
Series II LI 125 – 150 – TV 175
The Series II was just about just like the Series I except the head lamp was now inside a larger head set housing. The head lamp also turns when yout turn the steer unlike the series I.
Date of production Oct 1959~Nov 1961
Scooters produced 111.087 – 206.020 – 34.928
Capacity 123 cc – 148 cc – 175 cc
Bore x stroke 52×58 – 57×58 – 62×58 (mm)
Carburettor Dellorto MA 18 BS5 – MA 19 BS5 – MA 23 BS5
Gear 4 speeds Hand Controlled
Power 5,2 cv a 5.200 g/min – 6,5 cv a 5.300 g/min – 8,6 cv a 6.000 g/min
Speed max 68-70 – 78-80 – 90 (Km/h)
Tyre Size 3,50×10
Brakes alluminium finned drum
Tank capacity 8.5 – 8.7 – 8.7 (L)
Consumption 43 – 42 – 43 (Km/L)
Weight 104 Kg – 105 Kg – 110 Kg
Overall length 1825 mm
Overall eight 1060mm
Overall width 710 mm
Colors two tones of grey – grey – blue, cream, grey, blue
Panels color red – blue, green, orange, yellow
Price 157.000 – 169.000 – 189.000 (Lire)
Identification details 125-150 LI
Version I to September 1960 Small rear light (142×43), round horn grille, air filter pipe fixed with screw clamp, stand mudguard fixed with eight 5mm bolts.
Version II mid-1960 – January 1961 Large rear light (130×58 mm), oval horn grille, air filter pipe fixed with screw clamp, stand mudguard fixed with two 8 mm bolts (from October 1960).
Version III February 1961 – to end of production Air filter pipe with spring clip, larger air filter (version III type).
Identification details 175 TV
Version I to October 1959 Frame with longitudinal rib welded along the centreline of the tube, 23mm carburettor, small tail light (142x43mm), round, grey horn grille, air filter pipe fixed using a screw clamp, stand mudguard that come with eight 5mm bolts, flywheel side bearing lubricated via the gasoline mixture. Short piston (earliest examples only).
Version II to mid-1960 Frame with normal tube without welding, 21mm carbuerettor, flywheel side bearing lubricated with grease, long piston, large tail light (130x58mm), round, grey horn grille, air filter pipe fixed with a screw clamp.
Version II from mid-1960 – January 1961 Stand mudguard fixed with two 8mm bolts (from October 1960), round, grey horn grille, air conditioning filter pipe fixed which has a screw clamp.
Version II from mid-1960 – January 1961 Stand mudguard fixed with two 8mm bolts (from October 1960), round, grey front grille, air conditioning filter pipe fixed having a screw clamp.
Version III February 1961 – End of production Air conditioner filter pipe fixed having a spring clip, larger air conditioning filter (version III type).
Frame numbers by year
Li 125 1959: 700001 – 709838
1960: 709840 – 769061
1961: 769062 – 811087
Li 150 1959: 800001 – 825725
1960: 825726 – 921714
1961: 921715 – 100602
TV 175 1959: 100001 – 103261
1960: 103262 – 107464
1960: 200001 – 206005
1961: 206006 – 234323
Lechler system colours 175 TV
Tyrrhenian Blue 8028
Oriental Yellow 8049
Lechler system colours 125-150 LI
125 LI
Dawn Grey 8019
Dark Steel Grey 8040 (side-panels only)
150 LI
Dawn Grey 8019
River Grey 8014 (certain 1st version examples only)
Whitehorn 8082 (certain late 2nd version examples only)
Maintenance data 175 TV
Fuel/oil mixture 4%
Spark plug Bosch 225/240 long thread
Engine oil SAE 90, 600cc
Carburettor (1st version) Dell’Orto MA 23BS5
max jet 110, min 40 – Valve 70
Carburettor (2nd verison) Dell’Orto MA 21BS5/BS7
max jet 88, min 40 – Valve 70
Ignnition advance 22


















