128 vs Maxi Part 3 : Spring Song

We return to our two stars of the spring 1969 season with a look at the different approaches to chassis design adopted at Longbridge and Lingotto.  One car defied convention, the other defined the new orthodoxy.

Image: BMC

Raw facts first:  The Fiat 128 uses MacPherson struts at the front, with coil springs and a transverse anti-roll bar, and a fully independent system at the rear, comprising a transverse leaf spring, struts, and a single wishbone per side. The Austin has Hydrolastic springing and interconnection, with upper and lower links in a parallelogram arrangement at the front, and fully trailing arms at the rear.

That disregards the detail, which is significant in the understanding of the designers’ mindsets. Continue reading “128 vs Maxi Part 3 : Spring Song”

Theme : Suspension – Hydrolastic Rubbery Goodness

A long time ago the Midlands of Britain were at the cutting edge of suspension design.

Hydrolastic suspension: source
Hydrolastic suspension: source

In 1955 Citroen presented their DS which had a suspension system markedly different from the ones with which drivers were familiar. The British Motor Corporation picked up Citroen’s fragrant gauntlet. Their attempt to improve ride and handling went under the name hydrolastic and they offered it first on the period’s equivalent of a bog-standard family car, the 1100-series (born as ADO16). Continue reading “Theme : Suspension – Hydrolastic Rubbery Goodness”