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Old 02-25-2014, 07:56 AM   #1
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Camaro Z/28 Flying Car Logic mode


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No joke indeed!


Performance Traction Helps Camaro Z/28 Soar on Track
Algorithm helps maintain momentum for faster lap times

DETROIT – Engineers call it "flying car" logic. On the 2014 Chevrolet Camaro Z/28, the Performance Traction Management system delivers faster lap times on an undulating race track by helping maintain the car's full power and momentum even if the tires briefly lose contact with the ground, in certain track conditions.

Created for track use only, the "flying car" logic woven into the Z/28's standard PTM system integrates the chassis mode selection, Traction Control and Active Handling Systems. Each is tuned specifically in the Z/28 for optimal track performance and consistency, and is activated by the driver pressing a button in the center console.

Without "fly car logic", the PTM would interpret the force reduction on the tires as a loss of traction and reduce torque to restore it. Such an intervention would likely slow the car and reduce momentum.

"PTM uses torque, lateral acceleration and rear-axle wheel slip to define the amount of traction control required, but when the car clears a rise on the track, it normally wants to decrease torque to increase traction," said Bill Wise, Camaro Z/28 vehicle performance engineer.

"The unique logic in the system uses the ride-height sensors to determine the reduction in force on the tires that's unique to track driving and allows the car to continue with uninterrupted momentum and, ultimately, a better lap time."

Technologies such as PTM and the track-oriented logic helped the Camaro Z/28 log a lap on Germany's legendary Nürburgring road course that was four seconds faster than the Camaro ZL1, and beat published times for the Porsche 911 Carrera S and the Lamborghini Murcielago LP640. The Flugpltaz section of the Nürburgring has a rise that engaged the logic during the Z/28's 7:37 lap time.

Additionally, PTM enables the driver to press the accelerator pedal to wide open at the exit of the corner and manages acceleration based on the given vehicle dynamics. Five performance levels, or modes, are available to accommodate a variety of driving conditions.

The track-oriented "flying car" logic is available in all PTM modes, but it is most effective in Mode 5, calibrated for the fastest lap times. The Z/28 represents the first non-Magnetic Ride Control application of PTM, pioneered on the Corvette ZR1 and incorporated in the Camaro ZL1. Engineers further refined it for the car on the road course at GM's Milford Proving Ground in Michigan and on Virginia International Raceway and Road Atlanta.

Like the Flugpltaz, a section of the Milford course proved particularly effective in calibrating the logic. It features a hill sandwiched between turns Pahrump 1 and 2, named for and based on a pair of challenging corners on the 3.4-mile-long road course at Spring Valley Motorsports Ranch, in Pahrump, Nev.

"The hill between Pahrumps 1 and 2 is ideal for testing the feature," said Wise. "The car noticeably lifts as it clears the top of the rise. Without the logic built into PTM, the torque reduction would unnecessarily slow the car. With it, the car receives full torque over the rise, which helps reduce the lap time – and it is part of the reason why PTM Mode 5 can be as good, or better, than a driver's best effort, on certain track conditions."

Complementing PTM, the Z/28's reflexes over rises and grip around corners are competition-derived spool-valve dampers, specific suspension bushings, coil springs and stabilizer bars, a unique zero-preload limited-slip differential and 19-inch wheels wrapped with Pirelli PZero Trofeo R motorsport-compound tires.

"The new Camaro Z/28 was bred on and for the track," said Wise. "From the hardware bolted to the chassis to the software such as the "flying car" logic, every element built into it was designed to help deliver faster lap times, with consistency, control and dependability."

Ready for the track
The 2014 Camaro Z/28 is the fastest Camaro ever on a track, with improved speed coming from three areas:
• Increased grip: The Z/28 is capable of 1.08 g in cornering acceleration, due to comprehensive chassis revisions
• Increased stopping power: The Z/28 features Brembo carbon ceramic brakes capable of 1.5 g in deceleration, and consistent brake feel, lap after lap
• Reduced curb weight: The naturally aspirated Z/28 is 55 pounds lighter than the Camaro SS 1LE, with changes ranging from lightweight wheels to thinner rear-window glass.

Power comes from the 7.0L LS7 engine, rated at an SAE-certified 505 horsepower (376 kW) and 481 lb-ft of torque (652 Nm). A close-ratio six-speed manual transmission is the only transmission offered and power is distributed to the rear wheels via a limited-slip differential featuring a helical gear set, rather than traditional clutch packs, for optimal traction.

Founded in 1911 in Detroit, Chevrolet is now one of the world's largest car brands, doing business in more than 140 countries and selling more than 4.9 million cars and trucks a year. Chevrolet provides customers with fuel-efficient vehicles that feature spirited performance, expressive design, and high quality. More information on Chevrolet models can be found at www.chevrolet.com.

And from Autoblog... by Brandon Turkus
Posted Feb 25th 2014 8:00AM

If you're on a race track, there are three simple guidelines that will prevent you from having a very bad time. First, keep the car on the track. Next, keep the shiny side up. Finally, don't hit anything or anybody. If you follow these three rules, you might notice a commonality - keeping all four wheels on the ground. What if, though, you're on a track like the Nürburgring, and you're in a car fast enough to catch some air? Well, if you're the owner of a new Chevy Camaro Z/28, the engineers behind the car have prepared for just such an eventuality.

When the new Z/28 arrives at dealers, its performance traction management will be equipped with something called "flying car mode." No, that's not a joke. As explained in the video below, when engineers were catching air during the Z/28's development, the lack of resistance led the wheels to spin up and the traction control to kick. When the car came down, the car would slow.

To counteract that, engineers developed flying car mode, which basically shuts the traction control off as soon as the ride-height sensors detect a wheel going airborne. Once the Z/28 makes contact with terra firma again, traction control is reengaged. According to Chevy, adding this trick feature to the track-ready Camaro allowed it to skim five seconds off its Nürburgring time.

Take a look below for a short video on flying car mode, as well as a more detailed press release on the new traction tech:


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Old 02-25-2014, 08:08 AM   #2
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So I'm wondering how similar the 5 PTM modes in the Z/28 are to the 5 PTM modes in the ZL1? Does the ZL1 have this "flying car" logic or was this a new thing integrated into GM's PTM?
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Old 02-25-2014, 08:11 AM   #3
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I have seen the valley, and it is good.
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Old 02-25-2014, 09:18 AM   #4
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I have seen the valley, and it is good.
The surprises from Chevy keep coming. Wow.
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Old 02-25-2014, 09:32 AM   #5
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Old 02-25-2014, 09:38 AM   #6
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I have never owned a car with active traction modes and I always thought one would be faster with it disabled. So based on this the ring run video was using traction control???
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Old 02-25-2014, 09:59 AM   #7
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I like it nice find
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Old 02-25-2014, 10:41 AM   #8
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This thing just keeps getting better . . . .
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Old 02-25-2014, 11:59 AM   #9
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So with this car they said, if it does not say it cant be done in the rule books its legal to do it.
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Old 02-25-2014, 12:12 PM   #10
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Per that video, he said it saves up to 5 seconds on the lap. SO if the ZL1 doesn't have this "flying car" logic that means the Z/28 is about the same time or slower than the ZL1 (when not using "flying car" logic).
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Old 02-25-2014, 12:16 PM   #11
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Per that video, he said it saves up to 5 seconds on the lap. SO if the ZL1 doesn't have this "flying car" logic that means the Z/28 is about the same time or slower than the ZL1 (when not using "flying car" logic).
I was thinking the same thing. My guess is that GM will not ever test that scenario.
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Old 02-25-2014, 12:35 PM   #12
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I still think that with better weather conditions the Z/28 will turn an even better time. So I would still guess its faster than a ZL1. That being said either one is faster than 99% of us can drive. Hell my 1LE is faster than I can make bot go on a track. I'm definitely the weakest link.

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Old 02-25-2014, 01:57 PM   #13
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"Flying car logic"...would THAT have saved THIS?!

This is one of TWO unfortunate results at Road America, for TWO different CTS-Vs after cresting the hill before the turn...NO BRAKES! On Lap 2...
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Old 02-25-2014, 02:39 PM   #14
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Oh, I have seen this before, this is not new...
KITT had it on KnightRider, but they called it "turbo boost."
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Old 02-25-2014, 03:01 PM   #15
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Hmmmmm, I wonder if we can install this technology on my 2010??
I hate when the power drops while I am airbourne.
No seriously, I hate when that happens!!!!
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Old 02-25-2014, 03:17 PM   #16
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WOW!
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Old 02-25-2014, 03:58 PM   #17
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Hmmmmm, I wonder if we can install this technology on my 2010??
I hate when the power drops while I am airbourne.
No seriously, I hate when that happens!!!!
Are you (by any chance) Lieutenant Frank Bullitt? If so, I'm glad you got rid of the 'Stang...
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Old 02-25-2014, 04:00 PM   #18
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ftw.
that's just awesome. lol
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Old 02-25-2014, 04:32 PM   #19
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Per that video, he said it saves up to 5 seconds on the lap. SO if the ZL1 doesn't have this "flying car" logic that means the Z/28 is about the same time or slower than the ZL1 (when not using "flying car" logic).
The Z/28 ran a dry lap of almost 7:30.00 however since there is no video of that run they use the rain run instead which puts it in the high 7:30.00 second range.

I expect to eventually see a dry run with the Z/28 break the 7:30 barrier......
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Old 02-25-2014, 04:43 PM   #20
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I think it is funny and amazing at the same time.

That is paying attention to detail, way to go GM and the Camaro team
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Old 02-25-2014, 05:15 PM   #21
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Hmmmmm, I wonder if we can install this technology on my 2010??
I hate when the power drops while I am airbourne.
No seriously, I hate when that happens!!!!
Turn your TC off and you will not have the issue. I don't when I get airborne at Autobahn CC. Granted it is not for 5 seconds, more like 1-2, but it happens.

T.
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Old 02-25-2014, 06:46 PM   #22
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Old 02-25-2014, 07:12 PM   #23
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So the Z/28 can fly?
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Old 02-25-2014, 07:27 PM   #24
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I read that we would all be driving Flying cars by year 2000 in Popular Mechanics back in the 60's. It's about time.
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Old 02-25-2014, 09:31 PM   #25
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Damn it , I want it now so I can run me down some Z/28's when they "fly" by me while I'm losing power in mid-air.
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