“I think when you get the F-duct working properly you have … down-force in the corners and then turn drag off on the straight,” Brawn said. “At the moment we are not turning off enough drag on the straight.
“McLaren were clever enough to come up with the concept and have a lot more experience of it. You are seeing certain teams abandoned in Turkey and when it works properly it is a very, very powerful tool. We are persevering with it.”
Regardless of this, both Rosberg and Schumacher are optimistic about Canada. “Our Mercedes-Benz engine will certainly be a big help on the main straight,” Rosberg said. “We’ll have some further upgrades for the race weekend and the fact that the circuit characteristics are quite different from Istanbul Park makes me go there with high hopes. I think we might just put in a great result.”