What drivers said after Auto Club 400

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Martin Truex Jr. — WINNER:Honestly, it just feels good to win. I don’t really care. I don’t really worry about who’s winning, who else is fast. Obviously (Kevin Harvick) has been quick. They’v got a great team. Kevin is an awesome driver. They had it going on the last couple weeks. As we seen today, we can put together a run like that as well. I think most of all it feels good we’re able to find that speed we’ve been looking for the last couple weeks. Like I said, we’ve been close, but not quite close enough.  We knew we were off a bit, so it wasn’t a surprise that we weren’t winning. Today I felt really good about what we had. It was really fast. It’s just kind of reassurance that what we’re doing is working. We have a lot of things we have to look forward to this year. That’s because of the hard work of the guys, just everybody in our program, Toyota, TRD, all the guys in Denver, JGR chassis, all we do together with them. It’s been an unbelievable couple of seasons. Hopefully, we can keep it rolling.

Kyle Larson — Finished 2nd: “We were racing really hard, and I was better than (Kevin Harvick) in three and four, and he was better than me in one and two. I would side draft him down the frontstretch, and he would side draft me down the backstretch, and I don’t know if he was just coming down to side draft me or what, but we made contact, and it spun his car to the right. So, you never want to make contact with anybody, but all in all, it was a good day for our DC Solar Chevrolet team. We had a lot of weird issues like vibrations and stuff that made us have to restart in the back, and we would have to go back forward. It always seemed like we would get to third or fourth and kind of stall out there. But it was still a very good day. (Martin Truex Jr.) was really good, and I think (Kevin Harvick) was probably the best car again although he didn’t get to race a whole lot.  We are right there, and we just have to continue to work hard.”

Kyle Busch — Finished 3rd: “Just thought we were closer than that but obviously not. We were right on top of the 78 (Martin Truex Jr.) yesterday. The first run I thought we were really good and showed some strength, but from there on out showed no strength.”

Brad Keselowski — Finished 4th: “We had exceptional speed today with the Wurth Ford Fusion on the short runs, but not very much for them there on the long runs, that’s for sure. I was hoping to get a late-race caution, and I could make it exciting for the fans that are here, but it didn’t pan out that way. I still think the 4 car (Kevin Harvick) is probably the best car in the field right now. Things didn’t come together for him today. There will probably be a race in the future where he’s not the fastest, and it does come together. That’s how things work.

Joey Logano — Finished 5th: “The 78 had a great car.  I was in front of him for about five laps and I was like, ‘Hey,’ but it was short-lived. Overall, it was a good weekend. We got a top-five here, and a win yesterday is great. I would have liked to sweep the races here at Auto Club, and we’re just trying to get this Auto Club Fusion to Victory Lane at Auto Club Speedway. I’ve been so close for quite some time now, and it’s been a great race track for us and a lot of fun to race here, I just need more speed to be able to keep up there. We made one change that the car didn’t like right before the last stage, and we lost some track position there, and by the time we were able to start catching back up it was too late. We probably could have finished fourth, maybe third at the end if we didn’t have that bad run, but overall that’s where we’re at.”

Denny Hamlin — Finished 6th: “We just had a mistake on our pit stop. I flew through my box again. Once I got that remedied, it looked like were somewhere around a fourth or fifth-place car. Even a third place at times. In the long-run we were exceptional but we were just too slow on the short run to keep up. Those guys would pull 7 seconds on us, and we’d maintain after that and gain a little.”

Erik Jones — Finished 7th: “It was a really consistent day. We fought the handling here on the SiriusXM Camry. We couldn’t quite get it to turn the center and stay with the drive-off all day. Struggled a little bit with that in practice. A good day overall. We had about a seventh-place car, and we finished there. So we did a good job of running where we supposed to and not making any mistakes all day. We have to keep doing that. We need to be a little bit faster, and I think we’ll get there. It’s going to take a little bit of time. We’re working hard but a good finish.”

Jimmie Johnson — Finished 9th: “Each week, we have been getting a little bit better. We are definitely not happy with where we are right now, but we are seeing the improvements. We have been seeing it internally. We are making the cars drive better and better, and we are getting more competitive.”

Austin Dillon — Finished 10th: “It was a pretty solid day. We struggled, truthfully. I thought we were way closer in practice, and it just didn’t work out. We took off. We were plowing. We freed up way too much. Our balance was decent at the end, we just weren’t far enough up front to really do anything. I think we were a top-five car at the end. We just waited too late to get there.”

Clint Bowyer — Finished 11th: “We got really lucky to finish this race today. That tire was coming apart, and I didn’t think we had any chance of making it to the checkered flag, but it did. We wanted more than 11th, and at times today we were really good. We got some stage points, but we have some work to do. We’ll be ready for Martinsville.”

Ryan Newman — Finished 21st: “We made a major overhaul to our Chevrolet Accessories Camaro ZL1 last night. Our car fired off fast but wasn’t as fast as we needed it to be on the long run like our teammate’s car. Unfortunately, from the beginning, our handling was way off. Our car was so tight in the corners and loose off. We’re scratching our heads right now figuring out what went wrong. It wasn’t for a lack of trying on our part. We threw everything at it, had one run in the top 10 but could never get the handling in our favor to stay up with the lead pack.”  

Ty Dillon — Finished 27th: This was a real test of our team and how much fight we have in us because Auto Club Speedway was not kind to our Twisted Tea Camaro ZL1 today. It’s such a rough and old surface that it wears out your tires and can make car control incredibly difficult. Like a lot of other cars this weekend, I tagged the wall early in Stage 1 and got some pretty heavy right-side damage. We adjusted around that as best we could, but then we had to deal with a broken track bar at the end of Stage 2. It was certainly not the day we wanted to have, but I’m proud of my guys for battling back and not giving up. It’s easy to get down, but our team kept going. Even though it’s disappointing, we will not let this get to us. We will turn our focus to preparing for Martinsville and be ready for them next weekend.”

KEVIN HARVICK — Finished 35th: “I went down to side draft, and he was coming up, and we touched, and it just knocked the thing to the right and spun out. I don’t know that it’s his fault. I think that’s my fault for coming down the race track right there and trying to side draft and then as we touch it just came back up the race track. I was just trying to get a little too much right there. I knew the stage was coming in. I’ve just got to thank all of my guys. They did a great job on our Busch Beer Ford, and it was just my fault back there.”

Trevor Bayne – Finished 37th: “It’s not something where you would normally keep it on the outside of him (Ryan Newman). He was a little faster than us, but (the leader Martin Truex Jr.) was coming. I saw (Paul Menard) was having issues, so you have to stay in that lucky dog spot or the free pass, so I stayed on the outside of (Newman), and he just kept coming up and squeezed us into the fence. I think he thought he would clear us, and I was still just there. It’s unfortunate. It wasn’t really that much contact and I didn’t smell that bad of smoke through turn one and two, but then coming down the back I thought we better just hit pit road because we had a lot more to lose than to gain by staying on the race track. I turned to come down pit road and as soon as I turned off the wall the right-front blew at 200-whatever we’re doing here and the problem with here is you see the wall coming forever, so that’s not a fun ride when you’re on the brakes, and it isn’t slowing down, and it’s not turning. You know you’re going to hit hard, and I feel like I should be hurting right now as hard as that was, so that’s a testament to what NASCAR has done with safety because I feel like I should be looking at you funny right now, and I feel great. That was a hard hit.”

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Drivers for Drive for Diversity combine revealed

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The 13 drivers who will participate in the Advance Auto Part Drive for Diversity Combine were revealed Thursday and range in age from 13-19.

The NASCAR Drive for Diversity Development Program was created in 2004 to develop and train ethnically diverse and female drivers both on and off the track. Cup drivers Bubba Wallace, Daniel Suarez and Kyle Larson came through the program.

The 2020 and 2021 combines were canceled due to the impact of COVID-19.

“We are thrilled that we are in a position to return to an in-person evaluation for this year’s Advance Auto Parts Drive for Diversity Combine,” Rev Racing CEO Max Seigel said in a statement. “We are energized by the high-level of participating athletes and look forward to building the best driver class for 2023. As an organization, we have never been more positioned for success and future growth.”

The youngest drivers are Quinn Davis and Nathan Lyons, who are both 13 years old.

The group includes 17-year-old Andrés Pérez de Lara, who finished seventh in his ARCA Menards Series debut in the Sept. 15 race at Bristol Motor Speedway.

Also among those invited to the combine is 15-year old Katie Hettinger, who will make her ARCA Menards Series West debut Oct.. 14 at the Las Vegas Bullring. She’s also scheduled to compete in the ARCA West season finale Nov. 4 at Phoenix Raceway.

 

 

Name

Age Hometown
Justin Campbell 17 Griffin, Georgia
Quinn Davis 13 Sparta, Tennessee
Eloy Sebastián

López Falcón

17 Mexico City, Mexico
Katie Hettinger 15 Dryden, MI
Caleb Johnson 15 Denver, CO
Nathan Lyons 13 Concord, NC
Andrés Pérez de Lara 17 Mexico City, Mexico
Jaiden Reyna 16 Cornelius, NC
Jordon Riddick 17 Sellersburg, IN
Paige Rogers 19 New Haven, IN
Lavar Scott 19 Carney’s Point, NJ
Regina Sirvent 19 Mexico City, Mexico
Lucas Vera 15 Charlotte, NC

 

Dr. Diandra: Crashes: Causes and complications

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Two drivers have missed races this year after hard rear-end crashes. Kurt Busch has been out since an incident in qualifying at Pocono in July. Alex Bowman backed hard into a wall at Texas and will miss Sunday’s race at the Charlotte Roval (2 p.m. ET, NBC).

Other drivers have noted that the hits they’ve taken in the Next Gen car are among the hardest they’ve felt in a Cup car.

“When I crashed it (at Auto Club Speedway in practice), I thought the car was destroyed, and it barely backed the bumper off. It just felt like somebody hit you with a hammer,” Kevin Harvick told NBC Sports.

The three most crucial parameters in determining the severity of a crash are:

  • How much kinetic energy the car carries
  • How long the collision takes
  • The angle at which the car hits

Angle

The last of these factors requires trigonometry to explain properly. You can probably intuit, however, that a shallower hit is preferable to a head-on — or rear-on — hit.

A graphic show shallower (low-angle) hits and deeper (high-angle) hits
Click for a larger view

When the angle between the car and the wall is small, most of the driver’s momentum starts and remains in the direction parallel to the wall. The car experiences a small change in velocity.

The larger the angle, the larger the change in perpendicular speed and the more force experienced. NASCAR has noted that more crashes this season have had greater angles than in the past.

Busch and Bowman both had pretty large-angle hits, so we’ll skip the trig.

Energy — in pounds of TNT

A car’s kinetic energy depends on how much it weighs and how fast it’s going. But the relationship between kinetic energy and speed is not linear: It’s quadratic. That means going twice as fast gives you four times more kinetic energy.

The graph shows the kinetic energies of different kinds of race cars at different speeds. To give you an idea of how much energy we’re talking about, I expressed the kinetic energy in terms of equivalent pounds of TNT.

A vertical bar graph showing kinetic energies for different types of racecars and their energies

  • A Next Gen car going 180 mph has the same kinetic energy as is stored in almost three pounds of TNT.
  • Because IndyCars are about half the weight of NASCAR’s Next Gen car, an IndyCar has about half the kinetic energy of a Next Gen car when both travel at the same speed.
  • At 330 mph, Top Fuel drag racers carry the equivalent of six pounds of TNT in kinetic energy.

All of a car’s kinetic energy must be transformed to other types of energy when the car slows or stops. NASCAR states that more crashes are occurring at higher closing speeds, which means more kinetic energy.

Longer collisions > shorter collisions

That seems counterintuitive, doesn’t it? Who wants to be in a crash any longer than necessary?

But the longer a collision takes, the more time there is to transform kinetic energy.

A pitting car starts slowing down well below it reaches its pit box. The car’s kinetic energy is transformed into heat energy (brakes and rotors warming), light energy (glowing rotors), and even sound energy (tires squealing).

The same amount of kinetic energy must be transformed in a collision — but much faster. In addition to heat, light and sound, energy is transformed via the car spinning and parts deforming or breaking. (This video about Michael McDowell’s 2008 Texas qualifying crash goes into more detail.)

The force a collision produces depends on how long the car takes to stop. Compare the force from your seat belt when you slow down at a stop sign to what you feel if you have to suddenly slam on the brakes.

To give you an idea of how fast collisions can be, the initial wall impact in the crash that killed Dale Earnhardt Sr. lasted only eight-hundredths (0.08) of a second.

SAFER barriers use a car’s kinetic energy to move a heavy steel wall and crush pieces of energy-absorbing foam. That extracts energy from the car, plus the barrier extends the collision time.

The disadvantage is that a car with lower kinetic energy won’t move the barrier. Then it’s just like running into a solid wall.

That’s the same problem the Next Gen car seems to have.

Chassis stiffness: A Goldilocks problem

The Next Gen chassis is a five-piece, bolt-together car skeleton, as shown below.

A graphic showing the five parts of the Next Gen chassis.
Graphic courtesy of NASCAR. Click to enlarge.
The foam surrounding the outside of the rear bumper
The purple is energy-absorbing foam. Graphic courtesy of NASCAR. Click for a larger view.

That graphic doesn’t show another important safety feature: the energy absorbing foam that covers the outside of the bumpers. It’s purple in the next diagram.

All cars are designed so that the strongest part of the car surrounds the occupants. Race cars are no different.

The center section of the Next Gen chassis is made from stout steel tubing and sheet metal. Components become progressively weaker as you move away from the cockpit. The bumper, for example, is made of aluminum alloy rather than steel. The goal is transforming all the kinetic energy before it reaches the driver.

Because the Next Gen car issues are with rear impacts, I’ve expanded and highlighted the last two pieces of the chassis.

The rear clip and bumper, with the fuel cell and struts shaded

The bumper and the rear clip don’t break easily enough. The rear ends of Gen-6 cars were much more damaged than the Next Gen car after similar impacts.

If your initial thought is “Just weaken the struts,” you’ve got good instincts. However, there are two challenges.

I highlighted the first one in red: the fuel cell. About the only thing worse than a hard collision is a hard collision and a fire.

The other challenge is that a chassis is a holistic structure: It’s not like each piece does one thing independent of all the other pieces. Changing one element to help soften rear collisions might make other types of collisions harder.

Chassis are so complex that engineers must use finite-element-analysis computer programs to predict their behavior. These programs are analogous to (and just as complicated as) the computational fluid dynamics programs aerodynamicists use.

Progress takes time

An under-discussed complication was noted by John Patalak, managing director of safety engineering for NASCAR. He told NBC Sports’ Dustin Long in July that he was surprised by the rear-end crash stiffness.

The Next Gen car’s crash data looked similar to that from the Gen-6 car, but the data didn’t match the drivers’ experiences. Before addressing the car, his team had to understand the disparity in the two sets of data.

They performed a real-world crash test on a new configuration Wednesday. These tests are complex and expensive: You don’t do them until you’re pretty confident what you’ve changed will make a significant difference.

But even if the test goes exactly as predicted, they aren’t done.

Safety is a moving target.

And always will be.

NASCAR weekend schedule for Charlotte Motor Speedway Roval

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NASCAR Cup Series drivers race on the road for the final time this season Sunday, as the Charlotte Motor Speedway Roval course ends the playoffs’ Round of 12.

The 17-turn, 2.28-mile course incorporating the CMS oval and infield will determine the eight drivers who will advance to the next round of the playoffs. Chase Elliott won last Sunday at Talladega Superspeedway and is the only driver who has qualified for a spot in the Round of 8.

Entering Sunday’s race, Austin Cindric, William Byron, Christopher Bell and Alex Bowman are below the playoff cutline. Bowman will not qualify for the next round because he is sidelined by concussion-like symptoms.

The race (2 p.m ET) will be broadcast by NBC.

Charlotte Motor Speedway Roval (Cup and Xfinity)

Weekend weather

Friday: Sunny. High of 81 with a 6% chance of rain.

Saturday: Mixed clouds and sun. High of 67 with a 3% chance of rain.

Sunday: Sunny. High of 68 with a 3% chance of rain.

Friday, Oct. 7

(All times Eastern)

Garage open

  • 12 – 5 p.m. — Xfinity Series

Saturday, Oct. 8

Garage open

  • 7 a.m. – 2:30 p.m. — Cup Series
  • 8:30 a.m. — Xfinity Series

Track activity

  • 10 – 10:30 a.m. — Xfinity practice (NBC Sports App)
  • 10:30 – 11:30 a.m. — Xfinity qualifying (NBC Sports App)
  • 12 – 1 p.m. — Cup practice (NBC Sports App, USA Network coverage begins at 12:30 p.m.)
  • 1 – 2 p.m. — Cup qualifying (USA Network, NBC Sports App)
  • 3 p.m. — Xfinity race (67 laps, 155.44 miles; NBC, Peacock, Performance Racing Network, SiriusXM NASCAR Radio)

Sunday, Oct. 9

Garage open

  • 11 a.m. — Cup Series

Track activity

  • 2 p.m. — Cup race (109 laps, 252.88 miles; NBC, Performance Racing Network, SiriusXM NASCAR Radio)

 

Rodney Childers fined $100,000, suspended for four races

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NASCAR has suspended Rodney Childers, Kevin Harvick‘s crew chief, for four races and fined him $100,000 for what the sanctioning body called modification of a part supplied by a vendor.

The team was penalized for a modification to the deck lid.

Harvick, who is out of the Cup Series playoffs, and the Stewart-Haas Racing No. 4 team were docked 100 points.

Harvick’s car and that of Martin Truex Jr. were taken to NASCAR’s Research and Development Center in Concord, N.C. after last Sunday’s race at Talladega Superspeedway. There were no penalties assessed to the Truex team.

Harvick has been particularly critical of the Next Gen car in recent months, once referring to the “crappy-ass parts” provided by suppliers.

Harvick’s car erupted in flames during the Southern 500 Sept. 4 at Darlington Raceway. After he climbed from the smoking car, Harvick blamed the fire on “just crappy parts on the race car like we’ve seen so many times. They haven’t fixed anything. It’s kind of like the safety stuff. We just let it keep going and keep going.

“The car started burning and as it burned the flames started coming through the dash. I ran a couple laps and then as the flame got bigger it started burning stuff up and I think right there you see all the brake fluid that was probably coming out the brakes and part of the brake line, but the fire was coming through the dash.

“What a disaster for no reason. We didn’t touch the wall. We didn’t touch a car, and here we are in the pits with a burned-up car, and we can’t finish the race during the playoffs because of crappy-ass parts.”

MORE: AJ Allmendinger to return to Cup Series in 2023

Unless the team appeals, Childers would miss races at Charlotte, Las Vegas, Homestead and Martinsville and would return for the season finale at Phoenix.

NASCAR president Steve Phelps told the Associated Press that officials have not targeted Harvick. “I would say that’s ridiculous,” he said. “No one has a vendetta against Kevin Harvick or Rodney or anyone at Stewart-Haas Racing.”

On Wednesday afternoon, Harvick tweeted, “Seems strange…” A Childers tweet called the penalty “Shocker…..”.

NASCAR also announced Wednesday it has suspended Young’s Motorsports crew chief Andrew Abbott indefinitely for a behavioral violation during pre-race inspection. He must undergo anger-management training to be reinstated. The team races in the Camping World Truck Series.