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Kubica concerned about rivals' F-duct progress

ESPNF1 Staff
May 28, 2010 « Raikkonen was never considered by Red Bull | »
Robert Kubica is worried Renault might fall behind © Sutton Images
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Robert Kubica has admitted concern at the progress his competitors are making with their F-ducts in relation to his Renault.

His team is still working on the innovation, while the likes of Red Bull, Mercedes and Force India are all trialling new rear wing-stalling devices on their cars this weekend.

"Some of our competitors have the F-duct now which will give them better top speed," Kubica is quoted by Germany's Auto Motor und Sport.

"In Barcelona Sauber showed how much you can get out of it when the system is working. We don't have it, so it may be that we will fall behind somewhat."

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