Sliding pillar suspension
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A sliding pillar
independent front suspension for light cars. The stub axle and wheel assembly are attached to a vertical pillar or kingpin which slides up and down through a bush or bushes which are attached to the vehicle chassis, usually as part of transverse outrigger assemblies, sometimes resembling a traditional beam axle, although fixed rigidly to the chassis.[1]
Steering movement is provided by allowing this same sliding pillar to also rotate.
Sliding pillar independent suspension was first used by
semi-elliptic leaf spring. This system was copied by Sizaire-Naudin
a few years later.
In around 1904, the
unibody 600
model.
Sliding pillar suspension systems have also been used by several cyclecar manufacturers, the French maker Tracta, and in several prototype vehicles.
In 1909,
H.F.S. Morgan introduced a fundamentally similar system using a sliding stub axle on a fixed pillar, used first on Morgan Motor Company cyclecars, then on their cars up to the current time.[3]
The Morgan design is an inverted sliding pillar, as are most of the later designs; the pillar is attached to the chassis and the stub axle is carried by the sliding sleeve over this.
A drawback of the sliding pillar system is that the
suspension geometry).[1]
This suspension system is rare, but was used most notably in the groundbreaking Lancia Aurelia coupe (1950–58).
See also
- Plunger suspension - A similar sliding suspension, used for the rear suspension of some motorcycles.
References
Wikimedia Commons has media related to Sliding pillar suspension.
- ^ The Autocar(c. 1935). Autocar Handbook (13 ed.). London: Iliffe & Sons. pp. 145–147.
- ISBN 0-85613-230-6.
- ^ "Morgan Motorpedia ALL models, history and specifications". Auto Report. Retrieved 2023-03-30.