The 2014 Camaro Z/28 had a difficulty spinning its tires. Not doing standard burnouts, thoughts, the rubber was truly rotating on the wheels. Nicely it did, until finally Chevrolet engineers observed the vibration that it brought on and fixed the flaw.
Chevy observed the concern while it was running laps of the Z/28 on a track. It claims that the Camaro’;s aggressive Pirelli P Zero Trofeo R tires and have been generating so significantly traction that under braking, the rubber was really slipping on their wheels. The engineers say that the vehicle can develop one.5 g of force below deceleration thanks to its Brembo carbon-ceramic brake rotors.
They at first suspected an problem with the tires or wheels, and the test was comparatively simple. The engineers marked a chalk line relative to the valve stem and took the Camaro out for a lap. When it came back, they identified that the Pirellis had rotated 360 degrees or much more.
Of program, now Chevy had to resolve it. Scroll down to watch a video of the Camaro Z/28’;s engineers explaining the difficulty and their novel remedy, plus the press release about it. We have reached out to Chevy with some additional concerns but have yet to hear back. Search for an update to this publish if and when we do.
Tire grip, braking capability demand action to avert wheels rotating in tires
DETROIT – Even though running fast laps at numerous of the country’;s most demanding tracks, Camaro Z/28 engineers noticed the tires have been delivering so much traction and the brakes so significantly stopping force that the wheels rotated inside the tire – an unexpected challenge that necessary quick pondering.
“We had been advised to develop a fast vehicle – period,” mentioned Mark Stielow, Camaro Z/28 system manager and pro-touring skilled. “We knew on Day 1 we would want to deliver some of the ideal suppliers onboard to make it happen.”
The suppliers included Pirelli and its P Zero™ Trofeo R tires and Brembo for carbon-ceramic brake rotors. The Trofeo R tires have a track-oriented tread design and compound that, collectively with the carbon-ceramic rotors, assist the Z/28 obtain up to one.5 g in deceleration force.
It was a perfect blend, but engineers speedily found that when the Z/28’;s capability was examined, the wheels were rotating – slipping – inside the tires. They sought the root of the difficulty by marking a single of the Pirelli P Zero™ Trofeo R tires at the beginning of a lap with a chalk line relative to the valve stem on the wheel. At the end of the lap, they recorded in which the chalk line ended up and noticed the tire had rotated at least a total 360 degrees from in which they began.
Racers use an abrasive paint all around the bead of the wheel, the place the tire meets the rim, to combat the issue on race vehicles. The Z/28’;s engineers experimented with it, but it was not sturdy ample to avert the slippage, so other approaches had been experimented with. Finally, they tried media blasting, which includes shooting a gritty material by means of an air gun at the wheel’;s surface, incorporating texture to the paint for the tire to grip.
“Media-blasting the wheel created an incredibly aggressive grit on the rim, which ultimately received the tire to hold,” explained Stielow.
Along with the tires and brakes, some of the tire slip can also be attributed to the 7.0L LS7 engine assisting spin the wheels with an SAE-certified 505 horsepower (376 kW) and 481 lb-ft of torque (652 Nm). While going around corners, the helical-gear limited-slip rear differential also sends power to the wheels so effectively that variations in tire slip can be observed from side to side on the rear axle.
The 2014 Camaro Z/28 arrives in dealerships this spring.
Founded in 1911 in Detroit, Chevrolet is now a single of the world’;s largest auto manufacturers, carrying out company in more than 140 countries and offering far more than 4.9 million vehicles and trucks a year. Chevrolet supplies consumers with fuel-effective autos that function spirited functionality, expressive layout, and high good quality. Far more info on Chevrolet designs can be located at www.chevrolet.com.