Lambretta - Construction and Models

Construction and Models

Like Vespas of the day, Lambrettas had three or four gears and two-stroke engines with capacities ranging from 49 cc to 198 cc. Most two-stroke engines require a mixture of oil with the gasoline in order to lubricate the piston and cylinder.

Unlike the Vespa, which was built with a unibody chassis pressed from sheets of steel, Lambrettas were based around a more rigid tubular frame, although the "J" series model produced from 1964 through 1971 did have a monocoque body. Early versions were available in "closed", with fully covered mechanicals or "open", with minimal panels and thus looking like an unusual motorcycle. The model A and model B were only available in "open" style. The D models were noted for their torsion-bar rear suspension; at its peak, the D model outsold all other two-wheeled vehicles combined. (For the latter, see Ruth Orkin's famous photograph American Girl in Italy.) The much greater success of the "closed" version confirmed that riders wanted protection from the weather and a clean-looking machine.

Along with the Vespa, Lambretta was an iconic vehicle of the 1950s and 1960s when they became the adopted vehicle of choice for the UK youth-culture known as Mods. The character Jimmy from the influential scooter movie Quadrophenia rode a Lambretta Li 150 Series 3. Of the 1960s models, the TV (Turismo Veloce), the Special (125 and 150), the SX (Special X) and the GP (Grand Prix) are generally considered the most desirable due to their increased performance and refined look; the "matte black" fittings on the GP model are said to have influenced European car designs throughout the 1970s. These three models came with a front disc brake made by Campagnolo. The TV was the world's first production two-wheeled vehicle with a front disc brake.

As the race to be the first person on the moon gathered pace, Innocenti's new model was launched, the Luna range (Luna meaning "moon", in Italian). The machines looked very advanced for their day, reverting back to the open frame style of the much admired "D" types, and although sales were slow to start with, racing success from grass-tracking to circuit-racing soon made them a sales success. Designed by Bertone Innocenti wanted a small frame and engine Lambretta that could be sold alongside the larger models. The frame had a tubular-steel front end, with bolt-on leg shields, and a monocoque pressed-steel rear frame.

Lambrettas have attracted an eclectic following of "revival" Mods, collectors, scooterists, cutdown enthusiasts, and even racers. Vespa and Lambrettas both can be converted to fun and relatively fast machines with little (but relatively expensive) modification. Many owners customize these scooters with elaborate customizations and paintwork and attend well-organised scooter rallies. The Lambretta has benefitted from advances in technology in the motorcycle world. To boost performance some owners have fitted aftermarket cylinders and crankshafts that increase the swept volume to as much as 250 cc. Common modifications include a Nikasil plated aluminium barrel with radical porting, large Dell'Orto or Mikuni carburettors and bespoke expansion chambers. Hydraulic disc brakes in the front are becoming common on the more highly tuned machines, as are hydraulic clutches and rear brakes. Modern low-profile tyres greatly improve handling, as do uprated front and rear suspension units.