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  Chevron B21 BMW
 

  Article Image gallery (42) Chassis (1) Specifications  
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Country of origin:Great Britain
Produced in:1972
Numbers built:28 (all engines)
Designed by:Derek Bennett
Predecessor:Chevron B19 Cosworth
Author:Wouter Melissen
Last updated:May 01, 2012
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Click here to download printer friendly versionDerek Bennett's Chevrons were never complicated or ground-breaking racing cars. They were developed with a single purpose; to win races. And they did just that and quite often straight out of the box. One of the main reasons for the instant success was that Bennett rarely designed a new car from scratch. Most of the time the new Chevron was actually a subtle development of the previous season's car. This certainly was also the case with the Chevron B19 that was driven to a class victory at its debut during the 1971 Oulton Park Sports, GT and Clubmans race.

It might be hard to imagine when placed side by side but the B19's basic design can be traced back to the B6 of 1967. Both featured a reinforced steel spaceframe but instead of steel and duraluminium the B19 used mostly aluminium as reinforcements. The front part of the chassis consisted of a separate steel spaceframe to make accident repairs easier. Suspension was by double wishbones at the front and lower wishbones with top links at the rear. While a choice of engines was available almost all customers opted for the Cosworth FVC engine. Although displacing over 200 cc less than the displacement limit of two litre, it was considered the most competitive option.

The B19's immediate predecessor was the B16 and more specifically the single Spyder version built of this model. The fixed head B16 had lost its edge halfway through the 1970 season to the open and much lighter Lola T210, so Chevron's Works driver Brian Redman asked Bennett to make him an open version. This was easier said than done; for a conservative engineer as Bennett, designing a brand new body was a big step especially with no wind tunnel available to test it. Redman helped out by suggesting to style it after the Porsche 908/3 he had piloted with much success that same season. Incorporating a few tweaks of his own, Bennett did just that.

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  Article Image gallery (42) Chassis (1) Specifications