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Last Updated: Friday, 9 July, 2004, 19:43 GMT 20:43 UK
F1 changes to be revealed
By Andrew Benson
Motorsport editor at Silverstone

FIA chief Max Mosley
Mosley expects teams to agree to the changes
Formula One teams will be presented next week with the new rules that motorsport's governing body wants to impose next year to boost safety.

A dossier to be sent by the FIA will feature three speed-cutting proposals, on aerodynamics, engines and tyres.

FIA president Max Mosley told BBC Sport that he expected the teams to fall into line with his ideas.

"I don't think there will be a lot of dispute. At a technical level it's all going to be fairly smooth," he said.

The FIA proposals outlined to BBC Sport broadly match a set of ideas discussed and agreed at a meeting of the F1 teams' top technical people on Wednesday.

The Technical Working Group came up with a change which they believe will slow the cars by 1.5 to two seconds per lap by reducing the effectiveness of the rear of the cars in producing aerodynamic downforce.

Mosley said that the TWG's idea - combined with his plans to drastically reduce the number of tyres allowed per weekend and make engines last for two races - would probably be enough to bring about the reduction in speeds he desired.

The key items in the FIA's dossier will be as follows:

  • Changes to the cars that will ensure downforce is reduced by 20-25%.

  • From 2005, engines will have to last two entire race weekends, and in 2006 engine size will be cut from the current three-litre V10s to 2.4-litre V8s. Mosley believes this will slow down the rate of engine development.

  • Teams will be restricted to two sets of tyres for the entire weekend, with only one to be used for both qualifying and the race.

The teams have two months to come up with alternative suggestions if they do not agree with the FIA's ideas.

If they fail to do so, the FIA will give them three alternatives to choose from, and if they do not choose one of those within 45 days, the governing body can impose the rules of its choice.

The diffuser thing stands out as the best thing to do
Max Mosley

However, Mosley believes things will not go that far.

"We are going to give the teams some ideas at the end of next week, which will be an indication of what we think would be good, and if they all fail to agree probably what we would impose," he said.

"But it may well be that the teams decide to start preparing according to those regulations.

"There was a considerable degree of agreement (at the Technical Working Group). I don't think there is going to be a lot of dispute. And I think that at a technical level it's all going to be fairly smooth, as far as I understand."

The aerodynamic change agreed unanimously at the TWG is to limit the size of the diffuser, which channels air out of the rear of the car.

Diffusers are crucial in producing downforce, and any restriction has a dramatic effect on the overall performance of the car.

The TWG was not unanimous on the change to the engine rules, with both Honda and Mercedes objecting to the plans to make engines last two races.

But that is unlikely to prevent the change being accepted as only eight out of the 10 teams need to agree for a rule to be passed in this situation.

Mosley said he broadly accepted the TWG's proposals to change the diffuser design, but said the FIA's technical department was looking into the idea further.

He said: "From the information I currently have, the diffuser thing stands out a mile as being the best thing to do, but I don't want to pre-judge it."

He added that he was confident that the three proposals together would be sufficient to slow the cars as much as he required.

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