Randy takes C7 ZR1 to Willows
10-19-2018, 02:25 AM
#21
Burning Brakes
The issue was with the Z07 cars at Willow. The track surface was too bumpy and that is why GM went back and developed the rough track calibration.
Looks like the slide was mid corner so it wasn't a function of not putting the power down. More likely just a tad too much brake or too late on the brakes?
Looks like the slide was mid corner so it wasn't a function of not putting the power down. More likely just a tad too much brake or too late on the brakes?
10-19-2018, 04:33 AM
#22
Randy's laps in the ZR1 and the Z06 are included here, but I don't know if the Z06 time was done with or without the magnetic ride calibration update. ZR1: 1:23.70, Z06: 1:25.0.
http://fastestlaps.com/tracks/willow-springs
http://fastestlaps.com/tracks/willow-springs
10-19-2018, 08:36 AM
#23
Originally Posted by Palantirion
- Willow was bumpy??? It's really smooth except for the ripples in the braking area to 1 and some apex bumps at 8. And since manufacturers keep insisting on testing at the 'Ring you would think they would have that as their rough surface benchmark. It's way bumpier than anything in CA - even Streets of Willow.
10-19-2018, 10:36 AM
#26
Race Director
Willow Springs lap times
Rank Vehicle DriverTime PS / KG
1.Porsche 911 GT2 RS (991) Randy Pobst 1:21.08 700 / 1511
2.Dodge Viper ACR (Mk V) Chris Winkler 1:21.24 654 / 1536
3.McLaren 720S Randy Pobst 1:21.75 720 / 1428
4.Huracán Performante Randy Pobst 1:22.53 640 / 1556
5.Porsche 918 Spyder Randy Pobst 1:23.54 887 / 1665
6.Ford GT (Mk II) Randy Pobst 1:23.69 656 / 1527
7.Chevrolet Corvette ZR1 Randy Pobst 1:23.70 765 / 1651
8.Porsche 911 Turbo S unknown 1:24.26 580 / 1602
9.McLaren 675LT Randy Pobst 1:24.29 675 / 1328
10.Porsche 911 GT3 unknown 1:24.66 500 / 1443
11.Chevrolet Corvette Z06 (C7) Randy Pobst 1:25.00 659 / 1606
Rank Vehicle DriverTime PS / KG
1.Porsche 911 GT2 RS (991) Randy Pobst 1:21.08 700 / 1511
2.Dodge Viper ACR (Mk V) Chris Winkler 1:21.24 654 / 1536
3.McLaren 720S Randy Pobst 1:21.75 720 / 1428
4.Huracán Performante Randy Pobst 1:22.53 640 / 1556
5.Porsche 918 Spyder Randy Pobst 1:23.54 887 / 1665
6.Ford GT (Mk II) Randy Pobst 1:23.69 656 / 1527
7.Chevrolet Corvette ZR1 Randy Pobst 1:23.70 765 / 1651
8.Porsche 911 Turbo S unknown 1:24.26 580 / 1602
9.McLaren 675LT Randy Pobst 1:24.29 675 / 1328
10.Porsche 911 GT3 unknown 1:24.66 500 / 1443
11.Chevrolet Corvette Z06 (C7) Randy Pobst 1:25.00 659 / 1606
Last edited by Ruz; 10-19-2018 at 10:40 AM.
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NW-99SS (10-19-2018)
10-19-2018, 11:19 AM
#27
Willow Springs lap times
Rank Vehicle DriverTime PS / KG
1.Porsche 911 GT2 RS (991) Randy Pobst 1:21.08 700 / 1511
2.Dodge Viper ACR (Mk V) Chris Winkler 1:21.24 654 / 1536
3.McLaren 720S Randy Pobst 1:21.75 720 / 1428
4.Huracán Performante Randy Pobst 1:22.53 640 / 1556
5.Porsche 918 Spyder Randy Pobst 1:23.54 887 / 1665
6.Ford GT (Mk II) Randy Pobst 1:23.69 656 / 1527
7.Chevrolet Corvette ZR1 Randy Pobst 1:23.70 765 / 1651
8.Porsche 911 Turbo S unknown 1:24.26 580 / 1602
9.McLaren 675LT Randy Pobst 1:24.29 675 / 1328
10.Porsche 911 GT3 unknown 1:24.66 500 / 1443
11.Chevrolet Corvette Z06 (C7) Randy Pobst 1:25.00 659 / 1606
Rank Vehicle DriverTime PS / KG
1.Porsche 911 GT2 RS (991) Randy Pobst 1:21.08 700 / 1511
2.Dodge Viper ACR (Mk V) Chris Winkler 1:21.24 654 / 1536
3.McLaren 720S Randy Pobst 1:21.75 720 / 1428
4.Huracán Performante Randy Pobst 1:22.53 640 / 1556
5.Porsche 918 Spyder Randy Pobst 1:23.54 887 / 1665
6.Ford GT (Mk II) Randy Pobst 1:23.69 656 / 1527
7.Chevrolet Corvette ZR1 Randy Pobst 1:23.70 765 / 1651
8.Porsche 911 Turbo S unknown 1:24.26 580 / 1602
9.McLaren 675LT Randy Pobst 1:24.29 675 / 1328
10.Porsche 911 GT3 unknown 1:24.66 500 / 1443
11.Chevrolet Corvette Z06 (C7) Randy Pobst 1:25.00 659 / 1606
10-19-2018, 02:57 PM
#28
Race Director
Member Since: Aug 1999
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Randy sure was not happy with the car in Motortreand. Surprising
10-19-2018, 03:55 PM
#29
Safety Car
I realize the video is just that, a cut up video but that's alot of sliding around, looks more like a drift competition lap. Cars a beast, ton of power and GM has done well, very well to put a platform under it to support that.
PC
PC
10-19-2018, 03:57 PM
#30
Melting Slicks
Thread Starter
10-19-2018, 08:05 PM
#31
He doesn’t handle oversteer well. Hence the small delta at Laguna between the Z06 and ZR1 for Randy. Also why he preferred the ACR to the Z06.
He alludes to this in the full length best drivers car vid.
The performance of the ZR1 relative to it’s peers is poorest with Randy driving.
I’m a huge Randy fan, going back to way before MT and YT made him popular. But.
He alludes to this in the full length best drivers car vid.
The performance of the ZR1 relative to it’s peers is poorest with Randy driving.
I’m a huge Randy fan, going back to way before MT and YT made him popular. But.
Last edited by turbo8765; 10-19-2018 at 08:06 PM. Reason: spelling
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desmophile (10-22-2018)
10-19-2018, 08:47 PM
#33
Le Mans Master
That lap was the hot lap they used for the official time printed in the magazine. I hand timed it at 1:23.68. Hot lap starts at 1:38 but there is a problem.....
At 2:23 Randy basically drifts through the turn with opposite lock. I don't know willow that well but it's nearly impossible that this was the fastest way through that corner. He lost a considerable amount of time there.
I have confidence in Randy's credentials and opinion, but that lap as shown was not an accurate depiction based on that one corner. I don't know if they did all the drifting before hand and wrecked the tires or if maybe the tires were bad to begin with, but that was a huge slide. Maybe they edited in one of his impression laps instead of acrual hot lap footage. These are the gray areas where magazines can show bias. Poorly inflated tires, wearing them out before the hot lap etc. There are a number of small things you can do to intentionally sabotage lap time. Controversy sells magazines, and manufacturers pull strings.
I haven't seen the lap from the other two cars but I bet that GT2 didn't drift through there. I have encountered one turn where a very small four wheel drift was beneficial. This slide was too big to be that.
Calling it like I see it. No dog.
At 2:23 Randy basically drifts through the turn with opposite lock. I don't know willow that well but it's nearly impossible that this was the fastest way through that corner. He lost a considerable amount of time there.
I have confidence in Randy's credentials and opinion, but that lap as shown was not an accurate depiction based on that one corner. I don't know if they did all the drifting before hand and wrecked the tires or if maybe the tires were bad to begin with, but that was a huge slide. Maybe they edited in one of his impression laps instead of acrual hot lap footage. These are the gray areas where magazines can show bias. Poorly inflated tires, wearing them out before the hot lap etc. There are a number of small things you can do to intentionally sabotage lap time. Controversy sells magazines, and manufacturers pull strings.
I haven't seen the lap from the other two cars but I bet that GT2 didn't drift through there. I have encountered one turn where a very small four wheel drift was beneficial. This slide was too big to be that.
Calling it like I see it. No dog.
