|[[File: Tatra 13|frameless|upright=1.25|alt=]]|
|Assembly||Kopřivnice, Moravia, Czechoslovakia|
|Engine(s)||1,057 cc (64.5 cu in) air-cooled OHVflat-twin|
|Wheelbase||2,646 mm (104.2 in)|
|Curb weight||800 kg (1,800 lb) - 1,200 kg (2,600 lb)|
The truck was derived from model Tatra 11, with which it shared components and differed from it by strengthened rear axle. Initially the front wheels didn't have brakes. As Tatra 11 was succeeded by Tatra 12 (1926), the truck underwent modernization, which among other things brought it brakes to all four wheels.
The car used initially Tatra 11 engine, and later (since 1926) was manufactured with Tatra 12 engine. It is a four-stroke spark ignition two-cylinder boxer engine cooled by onslaught air. The cylinders had capacity of 1057 cc and power of about 10 kW at 2800 rpm.
The gearbox had four speeds (+reverse).
The initial chassis was derived from Tatra 11, while later from Tatra 12.
The front axle is stiff, suspended by transversal half-elliptic spring, carried by the aluminium engine block, while the rear axle consists of two independent swinging half-axles, suspended by transversal half-elliptic spring, which is mounted on top of the differential box and leaning its ends against the brake plates. The advantage of this solution is excellent progressiveness of the suspension.
The vehicle weighed about 1000 kg while it had payload of 800–1200 kg depending on version.
Tatra 13 was offered foremost as a small truck, however also buses were derived from it. It differs from Tatra 11 and 12 not only by the carrossery, but also by use of larger wheels at the rear.
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