[Z06] Braking
Thread Starter
6th Gear
Joined: May 2005
Posts: 6
Likes: 1
Braking
Hello, I'm new to the forum (Black03Z). I have a question about some of the claims made by aftermarket brake vendors. This one advertises that their rotors will improve 60-0 stopping distances from 125 to 90 ft. My question is that if the tire is at the critical friction point trying to stop the car that has ABS, how will a different rotor stop me any faster?
Team Owner
Joined: Oct 2001
Posts: 56,377
Likes: 79
Originally Posted by Z06tr
Hello, I'm new to the forum (Black03Z). I have a question about some of the claims made by aftermarket brake vendors. This one advertises that their rotors will improve 60-0 stopping distances from 125 to 90 ft. My question is that if the tire is at the critical friction point trying to stop the car that has ABS, how will a different rotor stop me any faster?
Thread Starter
6th Gear
Joined: May 2005
Posts: 6
Likes: 1
Thanks for having me. The add said 125 ft. I don't know where they got that from.
This is the link for the add.
http://www.accuratetechnologies.com/...rcategoryid=18
This is the link for the add.
http://www.accuratetechnologies.com/...rcategoryid=18
Team Owner
Joined: Oct 2001
Posts: 56,377
Likes: 79
Originally Posted by Z06tr
Thanks for having me. The add said 125 ft. I don't know where they got that from.
This is the link for the add.
http://www.accuratetechnologies.com/...rcategoryid=18
This is the link for the add.
http://www.accuratetechnologies.com/...rcategoryid=18
E-Town's 1/4-mile strip was also our brake-testing venue, although the 100-0 and 60-0 testing was cut short due to radar equipment malfunctions. But let it be known that with Baur behind the wheel, the best 100-0 stop came in at 317 feet. The Z06 also recorded multiple 117-foot 60-0 readings. Brake fade came into play only slightly, and Steve touted the 12.6-inch front/11.8-inch rear brakes and the quick-cycling ABS system for sucking the 'Vette to the pavement while providing drama-free panic stops. It doesn't get more effortless than this.
http://www.gmhightechperformance.com...es/0410htp_zo/
Team Owner
Joined: Oct 2001
Posts: 56,377
Likes: 79
Originally Posted by Z06tr
Thanks for having me. The add said 125 ft. I don't know where they got that from.
This is the link for the add.
http://www.accuratetechnologies.com/...rcategoryid=18
This is the link for the add.
http://www.accuratetechnologies.com/...rcategoryid=18
Item #: 373-0013
Price: $1,195.00
They better do something!!!!!!!
I'm going to post this thread in Racing and see what the experts say.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Originally Posted by CPT Z06
Well, TI rotors may have more of an effect on braking than an after market iron rotor. They reduce the rotational mass so much that the tires can work better. I don't know if they can make a 117' to 90' difference but I think they would make a noticeable difference. For:Item: C-5 Corvette Titanium Rotors
Item #: 373-0013
Price: $1,195.00
They better do something!!!!!!!
I'm going to post this thread in Racing and see what the experts say.
Item #: 373-0013
Price: $1,195.00
They better do something!!!!!!!
I'm going to post this thread in Racing and see what the experts say.
There have been a few totally anonoumous tests of these rotors as well. Stopping was ok not great at first, but as the stops became for frequent as in racing they faded real fast. Part of the braking process is friction - or converting Kinetic energy( energy in mortion ) to Static energy ( energy at rest )with a by product of heat. Ti is not a good heat absorption material so he heat had to go someplace. Well the pads glazed over and brake fade was persistant.
In short for that kind of money better to get big Brake Kit from StopTech, Wilwood, Alcon or Brembo.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Team Owner
Joined: Oct 2001
Posts: 56,377
Likes: 79
Originally Posted by AU N EGL
We had several discsions with the developer of the Ti rotors. He finally came out and said that Ti rotor were NOT for 3000+ lbs cars but more for 1800 lbs cars.
There have been a few totally anonoumous tests of these rotors as well. Stopping was ok not great at first, but as the stops became for frequent as in racing they faded real fast. Part of the braking process is friction - or converting Kinetic energy( energy in mortion ) to Static energy ( energy at rest )with a by product of heat. Ti is not a good heat absorption material so he heat had to go someplace. Well the pads glazed over and brake fade was persistant.
In short for that kind of money better to get big Brake Kit from StopTech, Wilwood, Alcon or Brembo.
There have been a few totally anonoumous tests of these rotors as well. Stopping was ok not great at first, but as the stops became for frequent as in racing they faded real fast. Part of the braking process is friction - or converting Kinetic energy( energy in mortion ) to Static energy ( energy at rest )with a by product of heat. Ti is not a good heat absorption material so he heat had to go someplace. Well the pads glazed over and brake fade was persistant.
In short for that kind of money better to get big Brake Kit from StopTech, Wilwood, Alcon or Brembo.
Former Vendor
Joined: Dec 2004
Posts: 220
Likes: 0
From: Wixom Michigan
ATI Performance has a vehicle dedicated to brake development. I have data on 60-0 stops with the OEM brakes and I will be evaluating the Red Devil Brake kit early next week. The marketing on our website is direct from the manufacturer. After we have the data I will post on our website.
We have been using Red Devil Brakes on our track car since the start of last season, but we are evaluating other kits, pads, and our own ABS control algorithms. At the moment we only cary parts on our site that we have used in competition and feel comfortable recomending to our local comunity. So the information we have listed is to the best of our knowledge true, if we find the information different than the manufacturer then we will post it. If we find a better product we will support that on our site.
Please feel free to contact me if you have any questions.
We have been using Red Devil Brakes on our track car since the start of last season, but we are evaluating other kits, pads, and our own ABS control algorithms. At the moment we only cary parts on our site that we have used in competition and feel comfortable recomending to our local comunity. So the information we have listed is to the best of our knowledge true, if we find the information different than the manufacturer then we will post it. If we find a better product we will support that on our site.
Please feel free to contact me if you have any questions.
Le Mans Master
Joined: Aug 2000
Posts: 8,762
Likes: 2
From: Murphy TX
The ultimate limiter in braking distance on a vehicle is the friction of tire to road surface, i.e. impending lockup.
So the question remains - how do you shorten the braking distance on a vehicle under threshold braking?
Now, fully understand the other issues associated with racing, fade, modulation etc. etc. so clearly understand the value of different friction setups, MOTs and the like, and the effect of optimizing bias.
But as far as 60-0 as the mags and testers do, how does this distance shorten? There's only so much friction available between the tire and the road surface.
Also, I'm not talking a hard stab at the brakes to purposefully induce lockup (overcoming static friction through high impulse) I mean approaching the threshold through increased pressures.
So the question remains - how do you shorten the braking distance on a vehicle under threshold braking?
Now, fully understand the other issues associated with racing, fade, modulation etc. etc. so clearly understand the value of different friction setups, MOTs and the like, and the effect of optimizing bias.
But as far as 60-0 as the mags and testers do, how does this distance shorten? There's only so much friction available between the tire and the road surface.
Also, I'm not talking a hard stab at the brakes to purposefully induce lockup (overcoming static friction through high impulse) I mean approaching the threshold through increased pressures.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
I guess 60 to 0 does not mean much to me. But 140- to 60 mph slow downs 3 times evey 2 minutes 30 minuets at time. would be more benifical.
so that is 45 stops from 140 down to 60 mph with in 30 minutes.
Good luck with your tests.
so that is 45 stops from 140 down to 60 mph with in 30 minutes.
Good luck with your tests.
Le Mans Master
Joined: Sep 2004
Posts: 5,707
Likes: 4
From: Los Angeles
Originally Posted by yellow01
The ultimate limiter in braking distance on a vehicle is the friction of tire to road surface, i.e. impending lockup.
So the question remains - how do you shorten the braking distance on a vehicle under threshold braking?
Now, fully understand the other issues associated with racing, fade, modulation etc. etc. so clearly understand the value of different friction setups, MOTs and the like, and the effect of optimizing bias.
But as far as 60-0 as the mags and testers do, how does this distance shorten? There's only so much friction available between the tire and the road surface.
Also, I'm not talking a hard stab at the brakes to purposefully induce lockup (overcoming static friction through high impulse) I mean approaching the threshold through increased pressures.
So the question remains - how do you shorten the braking distance on a vehicle under threshold braking?
Now, fully understand the other issues associated with racing, fade, modulation etc. etc. so clearly understand the value of different friction setups, MOTs and the like, and the effect of optimizing bias.
But as far as 60-0 as the mags and testers do, how does this distance shorten? There's only so much friction available between the tire and the road surface.
Also, I'm not talking a hard stab at the brakes to purposefully induce lockup (overcoming static friction through high impulse) I mean approaching the threshold through increased pressures.
Except it's not IMPENDING lockup, it's INSIPIENT lockup.
If a given brake pad/rotor setup is capable of locking the wheels, the limiting factor is tire size and weight distribution. A tall car with front engine will require the front tires to do 90% of the braking. A low profile car or better yet, one with a rear engine/weight bias, which helps keep some of the stopping duty on the rear will win. As Au_n_egl pointed out, it's the repeatability that counts in a roadrace.
