Frame Tubular Giulia Zagato (1963) 1/43 scale
Designed by Orazio Satta Puliga and Giuseppe Busso for the Alfa Romeo , the "TZ" was produced in collaboration with the Autodelta, which provided the preparation and assembly of the engines, the SAI Ambrosini, in charge of building the tubular frames, and the Zagato was responsible for forming the body with tubular structure, conceptual evolution of the Giulietta SZ short tail.
He was mounted the Alfa Romeo twin cam engine with a displacement of 1570 cc derived from the Giulia TI dual camshaft, powered by two horizontal double-choke Weber carburettors 45 DCOE developing maximum output of 112 hp (82 kW) at 6500 rev / min (the road model), which came up to 160 hp (118 kW) versions developed for competitions.
The chassis was tubular steel nickel-chromium. The sections ranged between 20 and 30 mm, weighing 62 kg, combined with the reliable mechanical Giulia, disc brakes on all four wheels, wheel rims, magnesium alloy and independent suspension, containing the weight to just 660 kg, reaching a top speed exceeding 215 km / h. The car was designed for both road use and for competitions. The latest version was equipped with an engine of 119 kW. The engine was installed in the shell with slight tilt to the left by 15 ° from the vertical, to maximize the flow of cooling air.
The airfoil was innovative; to increase performance is applied to design a short tail, based on studies of aerodynamic Wunibald Kamm (also known as a Kammback solution), and at the same time also designed by Zagato on some Giulietta SZ. In its maximum evolution, "TZ" reached in the race version a speed of about 240 km / h.
The model debuted in November 1963 at the Tour de Corse: two cars forced to retire due to an accident and a broken suspension arm but the first success was not long in coming. On 24 November, again in 1963, at the Monza circuit in a competition organized by FISA, the TZ prevailed, taking the first four places in the prototype class (in order Bandini Bussinello Baghetti, Sienese). After the approval he won many other races in Europe and North America. Between 1963 and 1965, 112 aircraft were produced that allowed approval for Sports 1600.
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