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#1 David Beard

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Posted 30 December 2005 - 11:25

DSJ on the change to AvGas in 1958…

Because the F.I.A. deemed it wise to run Grand Prix cars on aviation petrol, and reduce race lengths to 200 miles, there has been a distinct trend towards building smaller and lighter Grand Prix cars and in consequence there has been a search for reducing the unsprung weight on the cars. By a logical series of steps the design trend of today's Grand Prix car is undergoing a radical change, for without the possibility of using wasteful alcohol, fuel consumption has improved from something like 4?5 m.p.g. to 9?10 m.p.g.; the shorter races have reduced the total carrying capacity required, this large reduction in weight has allowed smaller tyres and lighter suspension parts to be used, and a smaller overall car has permitted smaller and lighter brakes and the whole character of Grand Prix racing is changing from one where driver, mechanics, team?manager and designer all had to work as a unit, to one where each member of the team does his job and then sits back and watches the next man do his.



Was he correct in saying that the coming of AvGas fundamentally influenced the way the cars were designed? I feel that perhaps he was overstating its impact, and that the cars were going in that direction anyway…

And his comments on teamwork are interesting in the light of today’s races, so often won in the pits…

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#2 Ray Bell

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Posted 30 December 2005 - 11:35

He was right, though there were other factors that were contributing...

The rear engine revolution brought with it reduced frontal area, which in itself reduced the need for the horsepower of the front engined cars. Tyre technology was going to take a hold too, and it must have been contributing to some degree in 1958.

More than anything, though, was the commitment of the two leading British 'lightweight' teams to stick with their lightweight theme.

#3 Catalina Park

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Posted 30 December 2005 - 11:40

I can't see a Lotus 18 carrying enough alcohol fuel to run a 3 hour GP. :lol:

#4 HDonaldCapps

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Posted 30 December 2005 - 11:44

Originally posted by David Beard
DSJ on the change to AvGas in 1958…

Was he correct in saying that the coming of AvGas fundamentally influenced the way the cars were designed? I feel that perhaps he was overstating its impact, and that the cars were going in that direction anyway…

And his comments on teamwork are interesting in the light of today’s races, so often won in the pits…


If anything, DSJ is understating the influence of AvGas and its impact on Grand Prix racing. The consequences of AvGas desision alone were significant, but when coupled with a reduction in the length of a grand prix to a mere 300-odd kilometers, you reached a point of critical mass where the consequences of this produce a blinding acceleration of any existing threads towards the lighter cars. Had it been one or the other, the direction may have taken longer, but both in tandem.....

If anything, the most significant change in the techical regulations by the CSI for GP racing in the post-War era was the move to AvGas. It was the catalyst for the shifts in technical direction which followed: Try to imagine the Twiddlers having to go 500km with alcohol fuel.....