Force India to persist with wheel nut system

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Force India will continue to use the captive wheel nut system that let them down during the Malaysian Grand Prix.

Paul di Resta and Adrian Sutil and to retire their VJM06s from the race as a problem with the wheel nuts meant their front-left tires could not be changed.

Captive wheel nut systems are already being used by other teams to speed up pit stops. It keeps the nut with the wheel, allowing the mechanic changing it to save precious tenths of a second while swapping the wheels over.

Force India believe they understand the cause of their problems in Malaysian and have taken advantage of the three-week gap between races to work on a solution.

“Even though the last race in Malaysia was very disappointing, I know we have the potential to bounce back quickly and get a good result in Shanghai,” said team owner Vijay Mallya. “Throughout the Sepang weekend, we had a quick car and the drivers felt good about their chances.”

“We were confident of bringing both cars home in the points until the wheel nut issue let us down. We’ve had three weeks to understand what went wrong and have worked hard fix the root cause of the problem.”

Force India showed promising pace before their double retirement, with Sutil quickest in Q1.

“The other teams will not stand still so we need to keep pushing hard and keep up this momentum,” he warned. “We will have a new tire combination in China – the soft and the medium – and we appear to be quite good at managing our tires so we need to use that to our advantage.”

Hartley happy with ‘big progression’ on first day with Toro Rosso

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With 69 laps completed (28 in free practice one and 41 in free practice two) and respectable lap times in both sessions, Brendon Hartley quickly acclimated to a modern day Formula 1 chassis in his first run with Scuderia Toro Rosso in Friday practice for the United States Grand Prix.

The Porsche factory driver has been drafted into the team following a convoluted series of musical chairs that sees Daniil Kvyat back after a two-race absence, Carlos Sainz Jr. now at Renault and Pierre Gasly racing at the Super Formula season finale in Suzuka.

Over the time in the car today, Hartley experienced changeable conditions in FP1 before a more normal FP2, and discovered the new F1 cockpit after a day learning in the garage yesterday.

“A steep learning curve today! It all went pretty smoothly and I kept the car on track without making too many mistakes, so I’m quite happy,” the New Zealander reflected at day’s end.

“I didn’t really know what to expect from today because I just had so much to learn! I think I made quite a big progression throughout the day.

“The biggest difference from what I’m used to is the high-speed grip, it’s incredible here in Formula 1…it was quite an eye-opener! Another challenge are the tires, which are also quite different to what I’m used to. On the other hand, the long-run looks quite positive and I did a good job managing the tires there – the biggest thing I need to work on now is the new tire pace, and I’ll get another crack at it tomorrow morning before qualifying.

“All in all, I’d say it’s all coming together. We’ll now work hard and go through plenty of data tonight and hopefully I’ll make another step forward tomorrow.”

His best lap was 1.1 seconds up on Friday driver Sean Gelael, the Indonesian Formula 2 driver, in FP1 (1:39.267 to 1:40.406, good enough for 14th) and 1.1 seconds off the returning Kvyat in FP2 (1:37.987 to 1:36.761, good enough for 17th). Interestingly, the Gelael/Hartley combination in FP1 marked the second time in three races that Toro Rosso had a pair of drivers in its cars without a single Grand Prix start between them – Gasly’s debut at Malaysia was the other, when he and Gelael were in in FP1.

Coming into Friday’s running, Hartley said he was more ready for this opportunity now than he had been as a teenager. He admitted he’d called Red Bull’s Helmut Marko in the wake of Porsche’s LMP1 withdrawal news earlier this year to say he was game for any chance that might come.

“I’m a lot stronger than I was back then, basically. I wasn’t ready at 18 years old. I like to think I’m ready now,” he said.

“I haven’t driven a single-seater since 2012, but I like to think that Porsche LMP1 has hopefully prepared me well.”

As for the rest of his weekend, it’s been made more complicated by Hartley being assessed a 25-spot grid penalty, even though Hartley had done nothing to accrue the penalties.

The roundabout sequence of driver changes at Toro Rosso saw Gasly replace Kvyat, Kvyat replace Sainz, and now Hartley replace Gasly, as is outlined by NBCSN pit reporter Will Buxton below.