Thu, Apr 28, 2022 page16

• F1 teams are stripping off paint to go faster

  • Reuters, LONDON
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  Formula One teams seeking to go faster have been stripping paint from the cars they revealed with pride before the season started.

  McLaren, Aston Martin and Williams were among those at last weekend’s Emilia Romagna Grand Prix in Imola, Italy, with notable expanses of raw, black carbon fiber replacing previously liveried areas.

  New rules for this year, with the introduction of larger wheels and an increased use of standard parts, have left some struggling to get down to a new minimum weight limit of 798kg. Every excess 10kg translates into about 0.3 seconds of lost time per lap.

  

  McLaren driver Lando Norris drives in the Emilia Romagna Grand Prix in Imola, Italy, on Sunday.

  Photo: AFP

  “With the halo, the bigger tires, the longer cars, we were all overweight. I think all but maybe one team,” McLaren chief executive officer Zak Brown said. “When you’re overweight you do everything you can to save anything you can, and it’s all incremental.”

  Brown said some sponsorship deals, such as McLaren’s with Google’s Android, had accelerated the process of stripping paint.

  “Our engine cover was initially papaya, but that was before we landed Google as a partner. We took the opportunity: “Hey, you want black? Fantastic,’” he said.

  “We didn’t modify anything that wasn’t kind of in line with our brand or what a partner wanted, but it saved some weight. Not a lot, but it’s about finding a little bit in a lot of different places.”

  Saving weight by going back to bare metal, or carbon fiber, has a long history in motor racing.

  According to lore, the original 1930s Mercedes Silver Arrows acquired their nickname when the cars raced with bare aluminum bodies after the team removed lead-based paint to shave off 1kg and come in under a maximum weight.

  The paint on a Formula One car weighs about 6kg, Alfa Romeo team manager Beat Zehnder said.

  Aston Martin’s technical head Andrew Green last month said that removing some of his car’s green paint had saved 350g.

  In 2016, McLaren sponsor AkzoNobel said painting each car involved six liters of paint and three liters of gloss lacquer totaling more than 8m2 of painted surface.

  Dave Robson, Williams’ head of vehicle performance, was reluctant to quantify the exact gain from removing paint, but said it was “meaningful.”

  “The paint might be light, but to get a good finish you end up doing quite a lot of filler work and prep on the bare carbon before you put the paint on,” he said.

  Robson said that stripping off paint was the fastest way to remove weight, and even if a car was below the limit, it was still beneficial to have an extra saving so the team could add ballast to improve balance.

  “It will be expensive and time consuming to find the weight [saving] some other way,” Robson said, indicating that the bare look is set to stay even if marketing departments are less happy.

  “The car has to have some visible personality, but at the same time it’s in the sponsors’ interests to make it as quick as possible,” he added.
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