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Trebron DRC suspension

Trebron DRC suspension

Trebron DRC suspension

(OP)
I've just found a copy of "Automobile Suspensions" by Colin Campbell in my office. It was published in 1981, and it's got a section on the Trebron double roll centre suspension, which at that time its inventor, a Canadian called Norbert Hamy, had been working on for more than a decade - i.e. since about 1970. It utilises a separate bulkhead, connected on each side to the chassis and to the top wishbone by a swinging link, to carry the SLA suspension arms. The geometry of the swinging links gives the bulkhead its own, very high, roll centre so that it banks into a corner, whereas the rest of the sprung mass rolls as normal. As a result, the swinging links modify the tyre cambers to compensate for roll. A similar aim to the Michelin OPT system, but does anyone know anything more about it? Apparently it was fitted to a Broadspeed Gp5 Ford Escort with "very promising" results, but the regs were changed which made it illegal.

Andy

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