Ladder Frame Design
The design is based on the Volvo PV sedan and shares its engine and front suspension with that model. However, unlike the PV, which had a unibody design and a coil spring rear suspension, the Duett used a ladder frame with leaf springs supporting the rear.
While the Duett has been criticized as a regressive design by those who point out that the ladder-frame car was based on Volvo's first unibodied car; the use of a separate ladder chassis provided Volvo with an easy solution in their desire to produce a suitable commercial vehicle. The availability of the bare chassis also allowed Swedish coach builders such as Grip, Valbo and Nordbergs to build Duett-based pickup trucks, convertibles and specialized commercial vehicles. The versatility of the ladder-frame design also made the Duett a popular choice as a base for customized vehicles such as hot rods and EPA tractors.
The Duett was the only automobile marketed by Volvo in the United States that used a separate frame. All other models were of unibody construction.
Read more about this topic: Volvo Duett
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