Friday 5: Daytona 500, Speedweeks prove costly to teams

2 Comments

Crashes collected an alarmingly high number of cars in the Daytona 500 for a fourth consecutive year.

Thirty-two of the 40 cars — 80% of the field — in this year’s Daytona 500 were involved in a crash based on NASCAR’s race report and video review.

In the last four years, 81.3% of the cars in the season-opening Cup race were involved in an accident. 

Despite the number of cars damaged in Daytona 500 crashes, Ryan Newman is the only Cup driver taken to a hospital in the past four years. He was released from Halifax Medical Center on Wednesday but will not race this weekend at Las Vegas Motor Speedway, ending his streak of 649 consecutive Cup starts that dates to his rookie season in 2002.

While there is an expectation of cars wrecking in the sport’s most prestigious race because of the tight racing, it hasn’t always been this extreme.

From 2013-16, the percentage of cars involved in an accident in the Daytona 500 was 42.6% — nearly half the percentage of cars damaged in crashes the past four years. 

Among the reasons for the dramatic increase is that more crashes begin toward the front of the field.

The 19-car crash in Monday’s Daytona 500 started when a shove from Joey Logano pushed Aric Almirola into Brad Keselowski’s car. Keselowski, running second, was turned into the outside wall in front of the field.

A nine-car crash in overtime started when Ross Chastain, running fourth, got out of shape after contact with Ryan Preece’s car and came up the track into Preece and Logano.

And Newman’s crash coming to the checkered flag happened while he led.

In 2019, 21 cars were involved in a crash with less than 10 laps left in the scheduled distance. It started when Matt DiBenedetto, running fifth, turned in front of the field after contact from behind by Paul Menard.

The 2018 race featured a 12-car crash that started when Kurt Busch, running third, got hit from behind and spun in front of the field, forcing the race to go to overtime.

In the 2017 race, 17 cars crashed after Jimmie Johnson, running third, was hit and spun in front of the field.

Blocking also has been cited for an increase in incidents. As to what is considered fair when blocking, Martin Truex Jr. said a few days before this year’s race: Well, I think lately anything is fair. It tends to cause a lot of crashes, too, but it seems like that’s par for the course in speedway racing these days is just block until you crash and go to the next one.”

All the cars crashed in this year’s Daytona 500 pushed the total number of vehicles in a wreck during Speedweeks to 102 for the Cup, Xfinity and Truck Series.

It’s the third time in the last eight years the number of damaged vehicles exceeded 100 for Speedweeks.

Included in that total were all 18 cars in the Busch Clash. Winner Erik Jones was listed in three crashes in that exhibition race.

2. Xfinity drivers get help

This season marks the first full season Xfinity drivers will be able to look at some data from competitors, much like Cup drivers do.

“I think it changes the game, especially for the rookies,” Chase Briscoe told NBC Sports.

Xfinity drivers could look at the data in the last two races of last season, Phoenix and Miami. Briscoe said the technology, which translates data to virtual effects via live tracking of cars, helped him at Phoenix.

“I’ve always told everybody that Phoenix is my worst racetrack,” Briscoe said. “For me to be able to have SMT (sports media technology) and see what guys do different (helps). We don’t have the SMT that the Cup guys have, we don’t have throttle, brake or steering. We only have GPS so we can literally only see what the car is doing line-wise and acceleration-wise. I can’t see what Kyle Busch is doing inside his race car, but I can see where his car is line-wise compared to mine and where he enters the corner.

“I know my crew chief is super excited about it. He wants me to sit down in the shop and watch two hours of the track we’re going to before we go that weekend. It’s definitely going to be a tool that we’re going to use a lot of.”

Briscoe says the technology looks like a video game, and he can change the camera angle to study another competitor.

Brandon Jones said a key is that the team can look at the data live, so his crew chief can help him change lines during a race. At Miami last year, Jones was told by his team he wasn’t driving deep enough in the corner based on the data they were looking at.

“That gave me a thought to say, hey, this is what we’ve got to do to get the car to able to do that, so it’s going to help me with adjustments,” Jones said.

3. On to Las Vegas

Among the key storylines this weekend for Cup teams at Las Vegas Motor Speedway will be the performance of the Chevrolet teams with the new Camaro.

Changes were made from last year’s car to improve the aerodynamics. Chevrolet teams won 11 of 72 races in 2018-19 — its fewest wins in a two-year period since the manufacturer scored four victories in 1981-82. A Chevrolet has not made the championship Cup race since Jimmie Johnson won the 2016 title.

“I feel like last year Chevy came, they just missed the ball,” car owner Richard Petty said. “You know what I mean? They thought they had something good. 

“This year they corrected a lot of these mistakes. We hope they corrected it enough that we’re going to be competitive everywhere we go. I think from that standpoint, Chevrolet and all the Chevrolet people are really looking forward to making up for what we did last year.”

Chevrolet did win two races on 1.5-mile tracks last year (tracks the same size as Las Vegas). Alex Bowman won at Chicagoland Speedway, and Kurt Busch won at Kentucky Speedway.

4. Leaner driver

Ty Dillon says he’s lost more than 30 pounds since focusing on a workout program. He weighed 167 pounds before the season.

“I thought naively as a driver who had raced his whole life, as a Cup driver I didn’t really need to work out and take my physical (role) seriously,” said Dillon, who has former driver Blake Koch as a trainer. “In the past few years I’ve taken it serious for the first time. It has made me a better driver.”

Dillon, who is beginning his fourth season in Cup, admits: “I didn’t think I was heavy. I didn’t think I needed to workout. I just relied purely on my skill.

“I just feel different (now). I’m stronger, mentally stronger, more confident. You look back at those pictures, and you just see you’re just naive and young. You mature and grow as a person, and I think you start realizing what is important.”

5. Phoenix adjustment

Phoenix Raceway will have the PJ1 traction compound again applied to the track for next month’s races. That event marks the debut of the short track package for Cup that is intended to tighten the racing.

The traction compound will be applied in the corners but will be applied more along the driving line. Last fall, the traction compound was applied close to the wall. It will not be as high this time in the turns.

 and on Facebook

Drivers for Drive for Diversity combine revealed

0 Comments

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

0 Comments

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

0 Comments

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

1 Comment

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.