Cyro treated rotors
10-31-2009 | 06:41 PM
#21
Joined: Sep 2004
Posts: 6,224
Likes: 4
From: Orange County, CA
If I didn't worry about cost, I think I'd be driving my car a lot harder. I know there are places where I hold back out of partially mechanical sympathy, but more so because I know there are things I'd like to last longer, and I don't want to break things.
I know you've spent more cuz my car is almost stock
I know you've spent more cuz my car is almost stock
10-31-2009 | 07:11 PM
#23
Joined: Sep 2004
Posts: 6,224
Likes: 4
From: Orange County, CA
So, to sum it up, Yes, they are worth it for street use, No for track use?
My street set has had about 36k miles of use + 2 track days (on OEM pads) on them. My track set has gone through 8 track days with Carbotech XP10/8 + drive to/from track.
I apologize for bringing in irrelevant discussion.
My street set has had about 36k miles of use + 2 track days (on OEM pads) on them. My track set has gone through 8 track days with Carbotech XP10/8 + drive to/from track.
I apologize for bringing in irrelevant discussion.
10-31-2009 | 07:41 PM
#24
Banned
Joined: Oct 2009
Posts: 161
Likes: 0
you're driving like a wuss
which is yes bigger than yours
10-31-2009 | 08:47 PM
#26
Joined: Aug 2007
Posts: 652
Likes: 1
From: San Deigo
I have asked the Cryo rotor treatment qustion to a few professional race divers and crews. The answer has been;
"Racers always use what they can to get an edge where ever they can. They try all the new options to get that edge. No one uses cryo rotors that I know of"
"Racers always use what they can to get an edge where ever they can. They try all the new options to get that edge. No one uses cryo rotors that I know of"
10-31-2009 | 09:12 PM
#27
Joined: Sep 2004
Posts: 6,224
Likes: 4
From: Orange County, CA
Credible? Who knows
Anyone know if this would apply to the metal used in brake rotors?
Originally Posted by wikipedia
The process has a wide range of applications from industrial tooling to improvement of musical signal transmission. Some of the benefits of cryogenic treatment include longer part life, less failure due to cracking, improved thermal properties, better electrical properties including less electrical resistance, reduced coefficient of friction, less creep and walk, improved flatness, and easier machining.
It has been found and proved that cryogenic treatment improves wear resistance of many alloy steels to a great extent.
It has been found and proved that cryogenic treatment improves wear resistance of many alloy steels to a great extent.
Originally Posted by wikipedia
Cryogenic hardening is a cryogenic heat treating process where the material is cooled to approximately −185 °C (−301 °F), usually using liquid nitrogen. It can have a profound effect on the mechanical properties of certain steels, provided their composition and prior heat treatment are such that they retain some austenite at room temperature. It is designed to increase the amount of martensite in the steel's crystal structure, increasing its strength and hardness, sometimes at the cost of toughness. Presently this treatment is being practiced over tool steels, high-carbon, and high-chromium steels to obtain excellent wear resistance. Recent research shows that there is precipitation of fine carbides (eta carbides) in the matrix during this treatment which imparts very high wear resistance to the steels.[1]
10-31-2009 | 09:14 PM
#28
Banned
Joined: Oct 2009
Posts: 161
Likes: 0
I never said anything about wear. They lasted longer on my heavy and fairly powerful WRX with STI drivetain than a set of "premium" centrics. The premiums had a couple issues. The weren't balanced out of the box and they warped to unusable in 3 track days. The cryoed centrics ARE balanced (you can see the marks) and they're going on 6-8 track days with no signs of problems. Some normal heat checking I can barely catch a fingernail on.
It may have nothing to do with cryo treatment and might be that the cryoed rotors start with higher quality blank. That's what I believe anyway.
What rotors are most of you track guys running then on the S? OEM, premium centrics or something better?
It may have nothing to do with cryo treatment and might be that the cryoed rotors start with higher quality blank. That's what I believe anyway.
What rotors are most of you track guys running then on the S? OEM, premium centrics or something better?