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 Post subject: 2011 Mustang GT500 - 9 seconds faster at VIR
PostPosted: Tue May 18, 2010 2:30 pm 
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We know firsthand that both the 2011 Ford Mustang V6 and GT aren't just plenty quick – they're downright scary fast compared to their predecessors. It should follow, that the king of the heap 2011 GT500 should be similarly faster than the 2010 model. Let's just go ahead and call that one an understatement. Ford just dropped a tasty video on the interwebs showing the car lapping one of our favorite tracks – Virginia International Speedway.

Ford's engineers had it in their minds that the new aluminum block with its 120-pound weight savings should help the car click off the 4.1-mile Grand West portion of the track about three seconds quicker than the outgoing car. Thing is, the 2011 GT500 managed to lap the track in 2:58.5 – a full nine seconds faster than last year's version.

Progress is most definitely a good thing. Hit the jump to see the car do the dance.


Image


http://www.autoblog.com/2010/05/18/vide ... e-seconds/

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 Post subject:
PostPosted: Tue May 18, 2010 2:32 pm 
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For those of us less familiar with VIR, what kind of cars run around 2:58 on that configuration?

I see the accelerometer peaking around 1.1G. I'm guessing this was done on race rubber, not street rubber. I don't see that mentioned in the article though.


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 Post subject:
PostPosted: Tue May 18, 2010 2:41 pm 
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That's Corvette ZR-1, Porsche GT2 territory.

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 Post subject:
PostPosted: Tue May 18, 2010 3:13 pm 
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Faster than

Audi R8
Exige S
09 M3
Camaro SS
370Z
Jag XKR


http://www.caranddriver.com/features/09 ... 09-feature

Pretty damn impressive

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 Post subject:
PostPosted: Tue May 18, 2010 3:52 pm 
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Marty Howard wrote:
That's Corvette ZR-1, Porsche GT2 territory.


The ZR-1 did it 6.7 seconds faster (according to the C&D article) so it depends on how you define "territory" I guess. Still damn fast though.

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 Post subject:
PostPosted: Tue May 18, 2010 3:59 pm 
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Vincent Keene wrote:
Marty Howard wrote:
That's Corvette ZR-1, Porsche GT2 territory.


The ZR-1 did it 6.7 seconds faster (according to the C&D article) so it depends on how you define "territory" I guess. Still damn fast though.


I was thinking the Sub 3:00 club, but yeah the ZR-1 was quite a bit faster.

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 Post subject:
PostPosted: Tue May 18, 2010 8:14 pm 
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ZR-1 looked to be a bit less dramatic... when I compared the footage from 2009.

check out the corrections he puts into the wheel at 9 and 10 with the mustang :shock:

I also noticed the front end getting more wavy than the zr-1 braking into "the bitch."

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 Post subject:
PostPosted: Tue May 18, 2010 10:00 pm 
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JamesMilko wrote:
For those of us less familiar with VIR, what kind of cars run around 2:58 on that configuration?

I see the accelerometer peaking around 1.1G. I'm guessing this was done on race rubber, not street rubber. I don't see that mentioned in the article though.


I assume you mean "DOT-R" tires. If so, do they squeal like these did? They sound like street tires to me but I'm not exactly current on what R tires sound like.

Here is what Ford says the car has with the performance package:

The SVT Performance Package features the first application of the all-new Goodyear Eagle F1 SuperCar G: 2, a tire that offers superb dry traction and precise handling, complete with a high-performance tread compound with more grip. SVT engineers worked directly with Goodyear to develop the new compound, and it’s only available on the 2011 Shelby GT500. The tire is unidirectional, corner-specific – meaning the directional tread must match its specific location

http://media.ford.com/article_display.c ... e_id=31977

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 Post subject:
PostPosted: Tue May 18, 2010 10:19 pm 
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I assume Ford used a professional driver. If so, I'm a little surprised by what appears to be the wrong gear initially exiting turn one. It looks like a downshift to 4th in the braking zone, easy throttle in the turn, full throttle at low revs at the exit, and then a very quick downshift to 2nd when the driver apparently discovered his error.

Dick

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 Post subject:
PostPosted: Tue May 18, 2010 10:41 pm 
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DickRasmussen wrote:
I assume Ford used a professional driver. If so, I'm a little surprised by what appears to be the wrong gear initially exiting turn one. It looks like a downshift to 4th in the braking zone, easy throttle in the turn, full throttle at low revs at the exit, and then a very quick downshift to 2nd when the driver apparently discovered his error.

Dick


i wasn't knocked out by the driving either. the above mentioned gear selection, resting his hand on the shifter instead of keeping it on the wheel, blowing south bend, questionable line after stevie wonder, and ugly thru hogpen. lots of second gear too, with that much torque and a six speed box i'd expect third to be better, second is good for sliding the tail and looking dramatic (ditto for smacking the hell out of the curbs) but probably not any faster. a clean lap minus the drama might be a couple of seconds faster.


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 Post subject:
PostPosted: Tue May 18, 2010 10:58 pm 
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DickRasmussen wrote:
I assume Ford used a professional driver. If so, I'm a little surprised by what appears to be the wrong gear initially exiting turn one. It looks like a downshift to 4th in the braking zone, easy throttle in the turn, full throttle at low revs at the exit, and then a very quick downshift to 2nd when the driver apparently discovered his error.


Agreed. Definitely an error there. Bad enough I'm surprised they posted the video.

Jason Tower wrote:
i wasn't knocked out by the driving either. the above mentioned gear selection, resting his hand on the shifter instead of keeping it on the wheel, blowing south bend, questionable line after stevie wonder, and ugly thru hogpen. lots of second gear too, with that much torque and a six speed box i'd expect third to be better, second is good for sliding the tail and looking dramatic (ditto for smacking the hell out of the curbs) but probably not any faster. a clean lap minus the drama might be a couple of seconds faster.


His gear selection was fine for the speed he was carrying. Problem is he could have been carrying more speed in a couple places (particularly Oak Tree) that I could see (assuming sticky tires...but I'm not sure he was on sticky tires). Not sure if it would have been enough to change which gear he was in (in fact, I doubt it). His "error" in South Bend wasn't one that cost him more than a tenth or two, though. There's terminal velocity and then there's *slightly* above it, which is what he was. Slightly above it gains you a tenth or two, and then you lose a couple tenths not being able to get on the gas *quite* as early. That's it. He didn't touch the dirt, so he didn't lose hardly anything.

I take issue with the "smacking the hell out of the curbs" part, too. He drove the VIR curbing with a car that could CLEARLY handle it just fine. If the curbs don't upset your car at VIR then he drove pretty much exactly where you should drive for clean consistent laps. You can go even faster if you just dirt track VIR, but that becomes much higher on the risk/reward model. Check out Leh Keen wheeling the Cayman at VIR in the GS race for an example of what I mean. He wrung everything you could get out of that car and then some.

If you have the ability to control your springs and shocks and you're *not* able to be faster driving the curbs at VIR just like this driver, well, either your car setup is bad or you need to try harder. :D

I do agree there appeared to be a couple more seconds in the car, and I'm surprised *this* was the video they showed. This was definitely a professional driver, but it did NOT look like anything but a fairly early lap in his testing.

All MHO, of course.


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 Post subject:
PostPosted: Tue May 18, 2010 11:36 pm 
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i'll concede that hitting the curbing that hard may not have slowed him down, considering i've never driven a 2011 gt500 and have no idea how it handles such abuse. i do wonder how much time the south bend goof cost. speed at corner entry was 86mph and would normally have increased, but instead he going 82 mph at track out. i'd love to see the data from those laps.

incidentally there was a 2011 mustang gt at shenandoah this past weekend, it looked and sounded pretty good but was in a different group than me. my students (a married couple) were codriving a 425hp challenger, sadly an automatic but it had coilovers and sways. and they let me drive it not once but twice, the second time was right after the husband's session. i got in and hit the track with her riding shotgun, on the first turn the brake pedal went right to the floor. the brake fluid (ate super blue) was ok when we came in but apparently boiled after sitting for a couple of minutes on grid. their friend was there in a supercharged challenger (570hp) and he went straight off at the end of the back straight when his brakes went bye bye.


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 Post subject:
PostPosted: Wed May 19, 2010 7:51 am 
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Jason, do you really consider hitting the curbing at VIR "abuse"? As in do you feel for a fast lap time you never get on top of one?

As for the Mustang, I'm not surprised about the brakes. I had no trouble cooking them down in the school cars at Miller. My entire second day was an exercise in brake management if I wanted to have ANY fun.

I think they have a brake upgrade option on the GT now, though.


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 Post subject:
PostPosted: Wed May 19, 2010 8:25 am 
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Donnie Barnes wrote:
Jason, do you really consider hitting the curbing at VIR "abuse"? As in do you feel for a fast lap time you never get on top of one?

As for the Mustang, I'm not surprised about the brakes. I had no trouble cooking them down in the school cars at Miller. My entire second day was an exercise in brake management if I wanted to have ANY fun.

I think they have a brake upgrade option on the GT now, though.


--Donnie


Donnie,

I think it was the Challenger brakes that cooked . . . not that a Mustang wouldn't have also if driven hard.

The 2011 GT has bigger standard brakes than 2010 and I think the V6 has "roughly" the previous GT brakes. The GT has a Brembo upgrade package available and the V6 has a GT brake package option.

FYI according to one of the mag road tests Ford "surveys" indicate that under 30's don't even want to "hear" about V8's . . . hence the new emphasis on having suspension, tire, and brake upgrades for the V6.

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 Post subject:
PostPosted: Wed May 19, 2010 8:33 am 
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Donnie,

Is it surprising that a heavy solid axle street car can handle curbs so well? i.e. should we be impressed?

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