G Forces and Loosing Traction
08-07-2014, 11:28 AM
#1
Racer
Thread Starter
G Forces and Loosing Traction
I'm wondering how many G Forces would it take for my '05 with Z51 to loose traction and have the rear end come around with traction control on and also traction control off? I know there are variables such as tires, weather, etc but generally speaking.
08-07-2014, 01:25 PM
#5
Le Mans Master
There are so many variables that it is almost impossible to give a meaningful answer. Some others to consider would include throttle position, road camber, road surface material (including add-ons such as gravel, oil, water, etc.), road surface temperature, suspension tuning, etc. I'm sure I left a bunch out.
08-07-2014, 01:37 PM
#7
Racer
Thread Starter
08-07-2014, 02:37 PM
#9
Drifting
08-07-2014, 03:27 PM
#10
Definetly respect the power of the car !!! Common sense comes in effect here also... Stock I thought they were fast - increased to 670 HP car is definetly a hand full !!!
08-07-2014, 03:36 PM
#11
Racer
Thread Starter
Discounting a couple of spin outs on snow covered roads during my 44 years of driving, I have never lost traction to the point of spinning a car around. But then, I have never had a car as powerful as my Vette. I never even spun out my 350z or 370z and they were my daily drivers. So yes...I would agree that common sense is of course the key. I was just looking for a more exact point of loss of traction in relation to G Forces that is displayed on the HUD but perhaps there is no exact answer.
08-07-2014, 04:11 PM
#12
Think your right... there is no right answer for this !!! Type of concrete - tires - ... I noticed I seemed to respect even more the car... Play safe I guess is my motto !!!
08-07-2014, 06:28 PM
#13
Right about .92g according to GM 
This would be for the base model. The GS and Z06 are at .98 and 1.02 IIRC.
Of course that's on a track/skid pad and with the OEM tires.
I've had the ends swap on a 79 Chevette in the rain with larger than stock tires. In the snow in a 4X4 pickup that was in 2 wheel drive at the time powering up a hill around a corner (was having fun, no damage).
In an Audi Allroad on a wet skid pad in a driving school. VSA off and had to use the emergency brake to do it, otherwise it would just push.
I have yet to turn off the goodies in the C6 and until I get to a track with plenty of runoff room I'll just leave them on
This would be for the base model. The GS and Z06 are at .98 and 1.02 IIRC.Of course that's on a track/skid pad and with the OEM tires.
I've had the ends swap on a 79 Chevette in the rain with larger than stock tires. In the snow in a 4X4 pickup that was in 2 wheel drive at the time powering up a hill around a corner (was having fun, no damage).
In an Audi Allroad on a wet skid pad in a driving school. VSA off and had to use the emergency brake to do it, otherwise it would just push.
I have yet to turn off the goodies in the C6 and until I get to a track with plenty of runoff room I'll just leave them on
08-07-2014, 06:52 PM
#14
Race Director
Take your car to the middle of a large empty parking lot, hold the Ttraction Control/Active Handling button down till the DIC shows everything is off, turn the steering wheel partway then floor the accelerator. Hardly any G force but the rear end will come around fast.
08-11-2014, 11:32 AM
#16
Racer
Thread Starter
Right about .92g according to GM This would be for the base model. The GS and Z06 are at .98 and 1.02 IIRC.
Of course that's on a track/skid pad and with the OEM tires.
I've had the ends swap on a 79 Chevette in the rain with larger than stock tires. In the snow in a 4X4 pickup that was in 2 wheel drive at the time powering up a hill around a corner (was having fun, no damage).
In an Audi Allroad on a wet skid pad in a driving school. VSA off and had to use the emergency brake to do it, otherwise it would just push.
I have yet to turn off the goodies in the C6 and until I get to a track with plenty of runoff room I'll just leave them on
This would be for the base model. The GS and Z06 are at .98 and 1.02 IIRC.Of course that's on a track/skid pad and with the OEM tires.
I've had the ends swap on a 79 Chevette in the rain with larger than stock tires. In the snow in a 4X4 pickup that was in 2 wheel drive at the time powering up a hill around a corner (was having fun, no damage).
In an Audi Allroad on a wet skid pad in a driving school. VSA off and had to use the emergency brake to do it, otherwise it would just push.
I have yet to turn off the goodies in the C6 and until I get to a track with plenty of runoff room I'll just leave them on
08-11-2014, 11:34 AM
#17
Racer
Thread Starter
Take your car to the middle of a large empty parking lot, hold the Ttraction Control/Active Handling button down till the DIC shows everything is off, turn the steering wheel partway then floor the accelerator. Hardly any G force but the rear end will come around fast.
08-12-2014, 04:46 PM
#18
Safety Car
Take your car to the middle of a large empty parking lot, hold the Ttraction Control/Active Handling button down till the DIC shows everything is off, turn the steering wheel partway then floor the accelerator. Hardly any G force but the rear end will come around fast.
You will lose traction because the limited slip differential will "lock" and cause both rear tires to rotate at the same speed, which forces the outer tire to "under" spin, and the inner tire to "over" spin.
That's why the rear end will break loose so easily in a tight turn.
With a long sweeping turn, this is hardly noticeable, like on a highway road.
There, if you have fairly new tires, and they are "warmed up" you can easily achieve over .9 G's (and more) with just about any vette and tire combo, if you are steering smoothly.
And, this roughly translates to being over triple the posted recommended speed limit of most curves....
08-12-2014, 07:27 PM
#19
Drifting
I just autocrossed my Z06 this past weekend and hit a peak of 1.08G's (according to the HUD) multiple times. I was definitely understeering past that. This was on Bridgestone Potenza RE050A Pole Positions RFT as well. The rear felt planted and didn't step out unless I my right foot got heavy.
08-12-2014, 07:27 PM
#20
Drifting
I just autocrossed my Z06 this past weekend and hit a peak of 1.08G's (according to the HUD) multiple times. I was definitely understeering past that. This was on Bridgestone Potenza RE050A Pole Positions RFT as well. The rear felt planted and didn't step out unless I my right foot got heavy.