Voici l'article détaillant la partie technique du podcast de Hongrie réalisée par itv-f1 :
http://www.itv-f1.com/news_article.aspx?id=49016 Renault ready to debut F-duct at Spa
Wednesday, 04 August 2010 01:47
Renault has confirmed it will be ready to finally introduce an F-duct onto its R30 for the Belgian Grand Prix at the end of the month.
The Enstone-based outfit has been the only one of Formula 1’s major teams not to race with the McLaren-pioneered device which helps increase straightline speeds, most of its main rivals having had the system since the early European rounds.
Team technical director James Allison says the F-duct is set to appear on the Renault for the first time at Spa, although he acknowledges it will be a challenge to get the concept working properly straight away.
“We should have that available in Spa,” he said in Renault's post-Hungary podcast.
“Clearly, we’ve seen team after team bring it and noticed the step up in their fortunes once they’ve got it working, but we’ve also seen it isn’t necessarily as easy as falling out of bed to make it work so we’ll have our work cut out in Spa to make sure that we get it working from the off.”
Once the benefits of the F-duct on the McLaren MP4-25 became clear in the opening flyaway rounds, the majority of its chief rivals made the development of their own versions of the device one of their top priorities.
Allison, however, said he made the decision at the time to prioritise developments already in the pipeline at Enstone as he was sure that combined they were going to produce a big step forward in performance.
But while there are just seven rounds remaining in the season, he thinks introducing the F-duct at this stage of the year still makes sense.
“It was very clear from the moment we saw the McLaren in pre-season what they’d done,” he said.
“It was also very clear that it wouldn’t be trivial to emulate it. I think it took most teams three or four races before they had their first versions of it, and some teams longer still.
“We’re the last significant major team to put it on our car and that was a deliberate policy of mine.
“Whether right or wrong, I knew we had a lot of good stuff coming through [in the development process] of a more conventional nature, [and] knew that that was going to tie up a lot of our design capacity and manufacturing capacity, but was very confident that I could get a lot of performance on the car that way.
“Whilst we were pressing on with that, we started to work in the background on trying to figure out how to do an F-duct on our car.
“We had one stillborn attempt that should have debuted two races ago which didn’t work out for us aerodynamically and we had to put it back a couple of races.
“But better late than never.”
With the rear-wing stalling device set to provide a timely straightline speed boost for the flat-out challenges of Spa and Monza, Allison is confident Renault will be ready to attack the final phase of the season in competitive shape on the back of its strong showing last weekend in Hungary.
Indeed he reckons the team may be able to give McLaren a run for its money over the Belgian weekend.
“We’ve no reason to think that we shouldn’t be running I would say strongly up with the McLarens,” Allison predicted.
“So I would hope that we can be ahead of the Mercedes’ and the other [midfield] guys and maybe giving the McLarens a hard time.”
En résumé Renault, contrairement aux autres écuries ,n'a pas fait du F-duct une priorité, préférant développer d'autres projets planifiés. Beaucoup d'écuries ont pataugé avec ce sytème avant qu'il ne soit efficace, perdant ainsi beaucoup de temps.
Renault a fait une tentative ,il y a deux courses environ, mais les résultats n'ont pas été bon d'où report de sa sortie.
James Allison espère que le F-duct marchera du premier coup à Spa.
Avec les progrès en Hongrie, James pense que Renault terminera l'année en bonne forme devant Mercedes et le peloton, pas loin des Mc Laren qui auront peut être des soucis à se faire
Article en français :
http://motorsport.nextgen-auto.com/Rena ... r-Spa.html