IMSA: DeltaWing explains latest development updates, gearbox and differential

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In an effort to improve overall performance, the DeltaWing Racing Cars team has made numerous updates to the revolutionary DeltaWing coupe in recent weeks. As the team heads to the Mobil 1 SportsCar Grand Prix Presented by Hawk Performance at Canadian Tire Motorsports Park – a fast, flowing track that allows the innovative sports car prototype to maximize its straight line speed – team manager Tim Keene and race engineer Alan Mugglestone highlight these updates.

The main areas of development have been the gearbox and the differential. As the coupe increases in performance, the balance between the car’s light weight and the need for stronger components has been a very delicate proposition. The team incrementally added to the strength and layout of the gearbox, with wider gears, stronger bevel gears and now a stronger mounting. The team works with suppliers for these components but the bulk of the DeltaWing coupe’s parts are designed and built by the team.

The team has also successfully tested a differential, which raced for the first time at Watkins Glen. The DeltaWing was originally designed with a very complicated and experimental electronic differential that would not only help the car drive, but turn under braking. For a number of reasons, the concept was abandoned in favor of an “open” differential. The new differential performed well at tests last month and helped put the DeltaWing coupe in the top seven for much of the first two hours at The Glen, while the car’s fuel efficiency put the car in the lead during pit stops before a problem with the gearbox mounting ended the day.

Keene and Mugglestone are optimistic heading into the weekend at CTMP, where the team saw competitive times last season.

“The DeltaWing coupe is more suited to a track that allows constant momentum,” said Keene. “The Daytona Prototypes have so much more horsepower and torque off of slow corners than we do, so the more we can keep the smaller engine revved up the better it is for us – and these next two tracks lend themselves to that. Given the weight of the car, our aero is very efficient for high speed because most of our downforce comes from the bottom of the car rather than large wings or dive planes. It’s a much more efficient way to create downforce with less drag, which is the car’s basic concept.”

“The DeltaWing concept doesn’t produce a huge amount of downforce compared to a DP or a P2,” Mugglestone added. “It was designed to be a very low drag, fuel efficient car. So when you lose a small amount of downforce as we did when we went from the roadster to the coupe, it’s a much larger percentage. The switch to Continental tires – with a bit less width on the rear tire – enabled us to modify the floor and get some of that downforce back.

“With the limited slip differential we’re running now, an unloaded wheel will transfer torque to the loaded wheel. So we picked up traction in the corners, which puts the gearbox under the same stress but for longer periods of time. We’ve backed off the horsepower to the point where we know the engine is not breaking the gearbox, because we’re below the recommended torque. We’re going faster because we have more grip, both from the tires and from the fact that we now have two rear wheels driving forward. The stronger gearbox should be able to handle that.”

As IMSA finds the balance of performance between the three disparate members of the Prototype class – the Daytona Prototype, the P2 and the DeltaWing coupe – where does the DeltaWing slot in alongside its competitors?

“We’re somewhere between a DP and a P2 in speed,” said Mugglestone. “We don’t have the DP’s power, but we’re lighter weight and we have less drag, so we actually have the acceleration of a DP – but because we didn’t have a differential in the car, we haven’t been able to use it. The P2s are at the opposite end of the scale, with much better cornering ability than either the DP or us but more drag and less horsepower. If you break down the numbers, we’re actually closer to a DP. That’s why CTMP should suit the car, since we can use the straight line speed and keep momentum going.”

As the season continues, the DeltaWing team goal is simple: to maintain the delicate balance between performance, weight and reliability.

“The changes we’ve made will strengthen us for the remainder of the year,” said Keene, “and I expect to see the results of that starting this weekend. We’re looking forward to a good weekend, since fast, flowing tracks like CTMP are favorable to the DeltaWing. So getting to the finish is the priority and if we do that, I expect a good result.”

Katherine Legge joins a returning Andy Meyrick (coming off two Blancpain victories in the Bentley GT3) behind the wheel of the DeltaWing coupe at Canadian Tire Motorsports Park in Bowmanville, Ontario, Canada this weekend.

Toro Rosso extends contract for technical director James Key

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Scuderia Toro Rosso technical director James Key will continue with the team for the foreseeable future, following a contract extension announced on Tuesday.

Key joined the team in 2012 and has seen the Faenza-based squad solidify its role in the upper midfield, with occasional surprise finishes that have pushed the team near the top three or four teams on the grid.

“I am delighted to continue with Toro Rosso and remain part of the Red Bull family,” he said. “This is a team which I have great respect for and have thoroughly enjoyed working with for the past 5 years; now I look forwards to continuing our project into the future.

“STR is unique, facing the challenges of being spread over two countries and fulfilling the roles of both a team in its own right and an important part of the Red Bull driver program: they are challenges that the team takes in its stride and, whilst doing so, continues to grow and improve year on year.

“Most importantly, the people I have had the pleasure to work with at STR are second to none: professional, ambitious and focussed, they have all worked incredibly hard to improve the team’s performance and will continue that hard work with the same dedication and optimism in the coming years too. I would like to thank Franz Tost and Red Bull for their continued support and confidence. We have more work to do, and I look forwards to taking the next steps with Toro Rosso towards our goals.”

Team principal Franz Tost added, Formula 1 is a team sport, but one in which an individual can still make a difference. So far, in his time with us, James has proved that he can indeed make that difference, leading the technical side of the operation.

“Not only has he been adept at producing chassis-aero packages that are well regarded throughout the paddock, he has also shown the management skills necessary to get the most out of all the various departments that work together both here in Faenza and in Bicester. I am therefore delighted that James will be with us for the foreseeable future to continue this fruitful process.”

Teams load up on supersoft tires for Italian GP

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There’s almost no variety in team Pirelli tire selections for the Italian Grand Prix, with nearly all teams going with two sets of softs and 10 sets of supersofts for next week’s race. All teams have selected just one set of mediums.

The only variance comes with Mercedes, Force India and Haas going with three sets of softs and nine supersofts. The rest are all the same choice, two softs and 10 supersofts.

Monza comes a week after Spa this week.

Pirelli’s tire breakdown is below.

Jackie Joyner-Kersee to serve as Gateway grand marshal

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The Verizon IndyCar Series’ return to Gateway Motorsports Park for the Bommarito Automotive Group 500 presented by Valvoline will feature quite an excellent grand marshal, in the form of three-time Olympic gold medalist Jackie Joyner-Kersee.

The full release from the track is below.

An Olympic champion has been selected to give the command to start engines for the Bommarito Automotive Group 500 presented by Valvoline comes to Gateway Motorsports Park in Madison, Illinois on August 26. Jackie Joyner-Kersee, considered to be one of the greatest athletes of all time, will serve as the grand marshal for the Verizon IndyCar Series event.

“I am humble,” said Joyner-Kersee, who is a native of East St. Louis, Illinois. “I do not take this honor for granted to be the INDYCAR race’s grand marshal at Gateway Motorsports Park. Very few people are asked to give the command and I am grateful to be one of the few. Thank you!”

Track-and-field star Joyner-Kersee has won three Olympic gold medals, as well as one silver and two bronze. She was the first American to win gold for the long jump and the first woman to earn more than 7,000 points in the seven-event heptathlon, making her the most decorated female athlete in Olympic track and field history.

As a teen, she won the National Junior Pentathlon championships for consecutive years and received widespread honors in high school in various sports, including track, basketball and volleyball. During her junior year, she set the Illinois high school long jump record for women, with a 6.68-meter jump. Joyner-Kersee attended the University of California, Los Angeles on a full scholarship and continued to gain fame on both the court and field. In 1981, at the age of 19, she began to focus on training for the Olympics, specifically for the heptathlon — an Olympic track-and-field competition comprised of seven separate events, including the 200-meter run, 800-meter run and 100-meter hurdles. She graduated from UCLA in 1985.

Joyner-Kersee won a silver medal in the heptathlon at the 1984 Summer Olympics, as well as gold and bronze medals in the long jump in 1988 and 1992, respectively, and is currently the heptathlon world record-holder.
Following her retirement from competition, she founded the Jackie Joyner-Kersee Youth Center Foundation. The mission of the foundation is to instill youth in the a Greater East St. Louis area with the dream, drive and determination necessary to succeed in academics, athletics and leadership. “Winners In Life.”

Chuck Wallis, Vice President of the Bommarito Automotive Group, will serve as honorary starter and will wave the opening green flag.

Kimi Raikkonen confirmed at Ferrari for 2018 F1 season

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Scuderia Ferrari has confirmed that Kimi Raikkonen will remain with the team for the 2018 Formula 1 season after being given a new one-year contract.

Raikkonen, 37, has raced with Ferrari since 2014, and has been on a one-year rolling contract since the end of 2015.

The Finn has been a regular focus for the F1 driver market’s ‘silly season’ given his age and struggle for form compared to teammate Sebastian Vettel, who currently leads the drivers’ championship.

Raikkonen has scored 86 less points than Vettel through the opening 11 races of the 2017 season, but has nevertheless done enough to secure a new contract, confirmed by Ferrari on Tuesday.

“Ferrari announces that Scuderia Ferrari has renewed its technical and racing agreement with Kimi Raikkonen,” a brief statement from Ferrari reads.

“The Finnish driver will therefore race for the Maranello team in the 2018 Formula One World Championship.”

Raikkonen is the first of the big-name free agents to have his plans for 2018 confirmed, with Vettel, ex-Ferrari racer Fernando Alonso and Mercedes’ Valtteri Bottas yet to announce a drive for next year.

Raikkonen first joined Ferrari in 2007, winning the F1 drivers’ championship in his first season, but left at the end of 2009 to take some time out from the sport.

A return in 2012 with Lotus saw Raikkonen display plenty of his old spark, taking two wins for the financially-hamstrung team before leaving at the end of 2013 over a pay row.

Raikkonen moved back to Ferrari for 2014 alongside Fernando Alonso, with Vettel arriving the following year.

Questions over Raikkonen’s motivation and ability have been rife for some time, but without any outstanding candidates for a seat available as things stand, the news is not overly surprising.

Nevertheless, it does defuse some of the silliness of ‘silly season’, with Vettel’s confirmation at Ferrari seemingly set to follow.