- The vacuum-powered Chaparral 2J.

The story of Chaparral - Beyond What's Normal

A mini-article I wrote during my spare time based on one of my older articles.

Normal. Adjective. Conforming to a standard, usual, typical, or expected. Example: It is normal for fast cars to have an aluminium engine block, automatic gearbox, active aerodynamics, lightweight composite wheels and on-board telemetry. But a fast car, or even a race car is not considered normal when it contains vacuum powered down force which is internally generated which eliminates the requirement for wings, or a race car powered by a high-revving fan to race in the Indy 500.

Meet Chaparral, the race engineering company that re-defines what is considered normal with every innovation they make. Some of their innovations are implemented into most cars today and can be widely seen throughout the auto industry such as active aerodynamics, an automatic gearbox, an aluminium engine block, lightweight composite wheels and on-board telemetry.

But all of their innovations were considered ahead of it’s time when they were newly developed and applied. Even until today, some of their developments were never considered normal despite being decades old, and are still not implemented in cars today, such as vacuum-powered internal down force and a fan powered, or even air powered car, which would take decades to re-master and re-develop for road use, and even more time to legalize them.

The Chaparral 1

The Chaparral 1 (Source: Ultimatecarpage.com)

The Chaparral 1 (Source: Ultimatecarpage.com)

In 1957, race engineers Troutman and Barnes built the Chaparral 1. It had the looks of a Shelby Cobra, and was made for track-only purposes. It was their first race car. Not much was known about Troutman and Barnes since, or how the car was used. A customer named Jim Hall purchased two Chaparral 1s to be used on the racetrack, both of which would soon become a legend in the racing world.

Jim Hall was the motivating force of Chaparral Racing, together with his assistant, Hap Sharp. They were the founding brothers of the company. Based on his hometown in Midland, Texas, they both built race cars and participated in some notable races, such as the United States Road Racing Championship, and the Can-Am Cup.

Their first cars, the two Chaparral 1s that they had just bought, were used in some races. It was heavily modified beforehand. Not much was known about what they won, what races they participated in, etc. But the cars Hall and Sharp built afterwards will change the face of racing forever.

The Chaparral 2A and 2B

The Chaparral 2A

The Chaparral 2A

In 1958, one year after their foundation, Chaparral and Chevrolet formed a partnership together. On the same year, the Chaparral 2 Series was born, starting with the Chaparral 2A, based on Chevrolet's Corvette GS-II Research Vehicle. It featured fiberglass for a chassis material, a first of its kind. It was an advantage to the car, which made it’s overall weight lighter.

In 1963, it hit the track for the first time. Slowly, race-by-race, it was developed into a dominating car for the Can Am series in 1966 and 1967, one of the most prestigious endurance races in the world which could stretch for as long as 200 miles. But two years ago, it’s crowning achievement was earned. The 2A raced and won the 12 Hours of Sebring, one of the roughest tracks in the North America, under horrible weather conditions and pouring rain.

As time went on, the Chaparral 2A was evolved into the Chaparral 2B. Not much has changed from the car besides some new parts put onto it. It still retained the fiberglass chassis that was featured on the Chaparral 2A. But the 2C will feature the most groundbreaking innovation used in the automotive world.

The Chaparral 2C, 2D and 2E

The Chaparral 2E with its massive wing deployed. (Source: Ultimatecarpage.com)

The Chaparral 2E with its massive wing deployed. (Source: Ultimatecarpage.com)

The Chaparral 2C was the first car in the world to feature an adjustable rear wing, designed to lie flat for low drag on straight racetracks and raise up when cornering. It was based on a Chevrolet Aluminium chassis, which gave the 2C an overall smaller size compared to the 2B and the 2A. Alongside the development of aerodynamics was Hall’s development of race tires. Jim Hall owned Rattlesnake Raceway adjacent to his race shop, which allowed him to develop and test new tires on his race cars. Jim Hall nicknamed the car the EBJ, short for "eye ball jiggler."

The 2D was the first closed cockpit variant of the 2-series, designed for endurance racing in 1966. It won the 1000 kilometers of Nürburgring in 1966 with Phil Hill and Joakim Bonnier driving. It also competed in the 1966 24 Hours of Le Mans, withdrawing after 111 laps. The Chaparral 2D was equipped with an aluminum alloy Chevrolet engine combined with an automatic gearbox, another world first, producing 420 horsepower, and the car weighed only 924 kg.

Meanwhile, the 2D evolved into the 2E, still based on the 2D, which would revolutionize racing altogether. It looked great, and screamed function and form. The wing evolved, featuring a curved shape opposite of an aircraft wing. The wing also could not just go up and down, it could also flatten and lift to reduce drag with the push of a pedal, which is featured in most super cars and hyper cars today. In addition, an interconnected air dam closed off the nose ducting for streamlining as well.

The Chaparral 2F, 2G and 2H

The ultra-streamlined Chaparral 2H without its massive wing.

The ultra-streamlined Chaparral 2H without its massive wing.

Hall applied what he had learnt during the development of the 2E to the older fiberglass chassis 2D for the 1967 racing season. Playing around with aerodynamics, he placed a movable wing in the rear of the car while an air dam kept the front end to the ground. A new engine, an aluminium 7-liter Chevrolet "big block" engine had replaced the 5.3-liter engine powering the 2D. However, its extra power had taken a toll on the car's gearbox, so a new one was developed for the 2F

The 1967 2G was mostly based on the 2E, featuring wider tires and a 427 aluminium Chevrolet V8 engine. While being en par with competitors in terms of power, Chaparral had one main advantage, weightlessness. The cars that Hall drove were lighter compared to the rest of the competition. The 2G's chassis was pushed to the limits, and the only thing keeping the car competitive was Hall's driving skill.

Hall noted that the increasing down-force also created enormous drag. Seeking a competitive edge, the 2H was built in 1969 as the replacement for the 2G to minimize drag, rather than maximize down-force. However, the anticipated gains in speed were more than offset by the reduced cornering speeds and the car was consistently slower than anticipated. It was eventually fitted with a huge wing jutting out of the middle of the car.

The Chaparral 2J

The Chaparral 2J

The Chaparral 2J

The 2J was the most unusual car to come out of the racing world. It’s also the strangest hybrid car, not powered by an engine and electric motors, but by an engine paired together with two fans. On the chassis’ sides bottom edges were articulated plastic skirts that sealed against the ground, a technology that would later appear in F1. In it’s rear, two fans sourced from a military tank engine powered by a two-stroke, two cylinder engine. Inside it, it contained a vacuum that could create artificial down force of up to 1.5 G, one and a half times the force of gravity, eliminating the need for aerodynamic parts.

The 2J competed in the Can-Am series and qualified at least two seconds quicker than the next fastest car, but was not a success as it was plagued with mechanical problems. It ran for only one season, in 1970, after which it was outlawed by the Sports Car Club of America. There were also complaints from other drivers saying that whenever they drove behind it the fans would suck in and throw stones at their cars. McLaren argued that if the 2J were not outlawed, it would likely kill Can-Am racing because it was too good...

Chaparral released their next Indy Car to replace the 2J, because it was banned, called the 2K. The 2K was a Formula One-inspired ground effect Indy car designed by John Barnard. It went on to win six races in 27 starts over three seasons. Its greatest success came in 1980, when Johnny Rutherford won both the Indy 500 and the CART championship.

The Chaparral 2K

The Chaparral 2K (Source: Ultimatecarpage.com)

The Chaparral 2K (Source: Ultimatecarpage.com)

The Chaparral 2K was a Formula One-inspired ground effect Indy car designed by John Barnard, and was the final car that Chaparral had made. Debuting in 1979 with driver Al Unser Sr, it went on to win six races in 27 starts over three seasons. Its greatest success came in 1980, when Johnny Rutherford won both the Indy 500 and the CART championship. Not a lot of information is known about this car though.

Chaparral Today

The Chaparral 2X on Gran Turismo 6

The Chaparral 2X on Gran Turismo 6

Sadly, Chaparral Racing’s glory didn’t last so long. Jim Hall abandoned the company, and he would later turn to using off-the-shelf race cars to race in his Indy car team which was renamed “Jim Hall Racing” until 1996, when he retired from racing altogether. Chaparral didn’t survive long after.

But in 2014, Chevrolet designed and developed an in-game car in Gran Turismo 6 which re-defined the power source of a car in homage to Chaparral. It was designed as a preview of the future of Motorsport and is inspired by the combined sensations of flying in a wing suit and a riding a Moto GP race bike. The 2X’s Chevrolet power unit is unlike anything seen on the track before. It’s laser powered. It literally thrusts itself down the track with laser pulse shock waves generated by an advanced propulsion system from Chevrolet. IT'S POWERED BY LASERS FOR CRYING OUT LOUD!

It was not controlled by a steering wheel, its powered by your body. You literally slip into the car lying down, and leaning your body which controls the car’s steering, just like in a wingsuit, and pushing your hand into a pedal which accelerates it. Because of the car’s absurd source of power, Gran Turismo had to re-research and apply new physics to this car, because it was laser powered.

You could play this car on Gran Turismo 6 right now. But only time will tell if the technology is available to create this car in real life, adding laser-powered cars to the already long list of Chaparral’s revolutions despite being defunct.

In Conclusion

The Chaparral 2E

The Chaparral 2E

Chaparral might be dead, but it’s legacy still lives on. It’s innovations were once considered groundbreaking and weird, but now, you could find them in most super cars and race cars today. Active aerodynamics, lightweight materials and even an automatic transmission, from the racetrack to our everyday cars on the road.

Now all we need to wait for is the fan powered car…

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Comments (7)

  • Very cool I am planning a trip to the Chaparral museum in Midland Texas later this year.

      1 year ago
  • Another top article. Chaparral are superb madness at its very best.

      1 year ago
  • Great post, I’ve seen them on Forza but didn’t know much about them

      1 year ago
  • Fantastic article!

      1 year ago
  • Laser powered.

      1 year ago

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