Special Other models
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1331 RS: heavy N3-class lorry with a five-cylinder engine, eight wheels, a gross vehicle weight of 33,000 kg, a kerb weight of 12,100 kg and a wheelbase of 5,980 mm, built in 1986
The manufacturer is recorded only as "Special", a name that does not point to any identifiable vehicle builder. This text therefore describes the vehicle class the 1331 RS of 1986 represents: a heavy eight-wheel chassis with an unusual five-cylinder engine.
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The 1331 RS is driven by a five-cylinder engine and stands on eight wheels, with a wheelbase of 5,980 mm and a width of 2,500 mm. The vehicle weighs 12,100 kg empty, with a gross vehicle weight of 33,000 kg.
At a gross vehicle weight of 33,000 kg the 1331 RS falls clearly into EU class N3 above 12 t, for which a top speed of 90 km/h applies across the EU. Almost 20,900 kg separate kerb weight from gross weight: a margin this large is typical of a load carrier built for heavy, variable cargo such as bulk goods or building materials, unlike vehicles with a permanently mounted piece of equipment, which leave little room for payload. Eight wheels on a wheelbase of nearly 6 m is a common configuration for tipper or mixer chassis in this weight class.
Buying such a heavy eight-wheel chassis second-hand starts with checking the frame and axle mounts for cracks, since a gross vehicle weight of 33 t places heavy demands on the structure. The five-cylinder engine calls for a check of the injection system and turbocharger, the air brakes on all axles for a check of lines and drums, and given the 1986 build year, frame corrosion around the rear axle group deserves a look as well.
Sources: SpecCodex-Register: Kennwerte des Modells 1331 RS
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