Champions Renault have turned the focus of their factory on next year's car after blaming their late start on this year's car as the main cause for their disappointing season.

Technical director Bob Bell said some aerodynamic improvements were planned for Turkey and Monza but the focus was now on 2008.

"It’s no surprise to hear me say that this year has been a big disappointment. Our level of performance so far has been well below our expectations at the start of the season. But having said that, there have been a number of positives too, most importantly the way in which the team has handled, and responded to, what was a tough situation for all concerned," he said in a team interview.

"We are not taking our foot off the pedal, and we are still working very hard for the final six races in the 2007 championship – and beyond. We will have some minor aerodynamic upgrades in Turkey, and a new aero package in Monza adapted to the very low drag set-up we require there. We will also be working hard to extract more performance at the track from our most recent developments. Back at the factory, though, the moment has come to focus our energies on 2008. We have always said that our problems this year would not compromise next year’s programme, and that remains the case".

Asked about his expectations for the race weekend in Turkey, Bell said that although teams had not been allowed to test everybody would have been working hard back at the factory.

"We have made progress, and I am sure other people have too. I think that the overall picture will be similar to recent races, and indeed should stay relatively stable until the end of the season in my opinion. Turkey is not a race that presents any extreme challenges, apart from the high temperatures we will have to face. And our objective will, as always, be to get the most out of our package. "The top two teams are clearly still a step ahead, and it will be difficult for anybody to race with them. Looking at BMW, they have taken a definite step forward in the last few races and they remain, at this stage of the year, quicker than us. Williams and Toyota have moved forward too. I think that it we continue to work well and to get the most from the car, then we are capable of beating BMW on a number of occasions before the end of the year. That remains our target.

As for work on next year's car, Bell said work on the car began early and the approach had been quite different to recent years.

"First and foremost, we had to be certain that our development tools were working correctly. Once this was confirmed, we began putting a lot of energy into the design of the new car. The project is on time, and we have been exploring some very interesting new development paths."

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