Lost brakes on track
04-30-2007, 11:03 AM
#61
Drifting
Originally Posted by Vlocity
Has anyone used the titanium inserts between the pad and caliper in order to help reduce heat transfer into the caliper?
Doing a search, I found them here, and they will fit my GT due to it having Big Reds which are the same as 993 TT front brakes:
http://www.racersedge-inc.com/racers...enumodelbytype
As soon as I get home I will be buying a set!
04-30-2007, 01:49 PM
#62
Race Car
I have regular S4 brakes and could only find the titanium shields in sizes that fit the rear. Availability may be an issue for those of us running "standard" brakes.
04-30-2007, 02:01 PM
#63
Drifting
Originally Posted by James-man
I have regular S4 brakes and could only find the titanium shields in sizes that fit the rear. Availability may be an issue for those of us running "standard" brakes.
MC-6210
Fits Front: 911 Turbo 91-92, 911 95-98 (993), 928 86-91, 944 Turbo S 88-89, 944S2 and 968 w/sport susp
From here:
http://www.racersedge-inc.com/racers...enumodelbytype
04-30-2007, 03:09 PM
#64
Rennlist Member
how does a piece of metal between pad and caliper pistons reduce heat transfer? I know there are statistics, but companies like KN also say their air filters give you better gas mileage too!
I think the key here is having a big fat pad that doesnt transfer the heat as much. I think a lot of the heat is the fact that the calipers are in close proximity to a 1000 degree rotor!
MK
I think the key here is having a big fat pad that doesnt transfer the heat as much. I think a lot of the heat is the fact that the calipers are in close proximity to a 1000 degree rotor!
MK
Originally Posted by SwayBar
I was just thinking about this today as I had those in my Z06, and they worked very well; the manufacturer reported that the caliper ran over 100 degrees cooler due to reduced heat transfer from the pad to caliper.
Doing a search, I found them here, and they will fit my GT due to it having Big Reds which are the same as 993 TT front brakes:
http://www.racersedge-inc.com/racers...enumodelbytype
As soon as I get home I will be buying a set!
Doing a search, I found them here, and they will fit my GT due to it having Big Reds which are the same as 993 TT front brakes:
http://www.racersedge-inc.com/racers...enumodelbytype
As soon as I get home I will be buying a set!
04-30-2007, 04:16 PM
#65
Rennlist Member
Join Date: Jan 2006
Location: central cal
Posts: 975
Likes: 0
Received 0 Likes
on
0 Posts
Mark, different materials have different heat-transfer characteristics. Titanium's heat-transfer rate is about 1/3 that of steel. A major contributor to heat in the caliper is the direct transfer from the hot pad into the piston, so if you interrupt that path, the fluid and the caliper stay cooler. Some pads even have a ceramic plate between the friction material and the steel backing plate...
04-30-2007, 04:45 PM
#66
Race Car
Originally Posted by mark kibort
how does a piece of metal between pad and caliper pistons reduce heat transfer? I know there are statistics, but companies like KN also say their air filters give you better gas mileage too!
I think the key here is having a big fat pad that doesnt transfer the heat as much. I think a lot of the heat is the fact that the calipers are in close proximity to a 1000 degree rotor!
MK
I think the key here is having a big fat pad that doesnt transfer the heat as much. I think a lot of the heat is the fact that the calipers are in close proximity to a 1000 degree rotor!
MK
The ti heat transfer question is valid, however. How much heat transfer does an insert prevent? 10, 20, 30 degrees?
I think the caliper heating is mostly directly from pad to caliper. Everything else seems to have airspace and airflow around it. Just an opinion.
06-07-2007, 09:18 PM
#69
Rennlist Member
Thread Starter
Originally Posted by MK
anyone want to split a set? I dont need them on the rears
06-07-2007, 10:18 PM
#70
Race Car
Originally Posted by Charley B
Isn't one set for the front of one car only? One on the outside of each pad for a total of four, covering the front?
06-08-2007, 03:29 AM
#72
Rennlist Member
To the best of my knowledge, "per axle" means for two wheels - however many calipers/pistons/pads that entails.....
06-08-2007, 03:36 AM
#73
Rennlist Member
Originally Posted by svp928
Mark, different materials have different heat-transfer characteristics. Titanium's heat-transfer rate is about 1/3 that of steel. A major contributor to heat in the caliper is the direct transfer from the hot pad into the piston, so if you interrupt that path, the fluid and the caliper stay cooler. Some pads even have a ceramic plate between the friction material and the steel backing plate...
06-08-2007, 10:52 AM
#74
Three Wheelin'
I have tried to find a compromise of a dual use brake pad and have come to the conclusion that it doesn't exist. The Hawk Street plus Track pad that I am currently using gets the job done in the DE's, but it squeels like a pig to the point that it is embarrasing. i have made the decision to go to dedicated track pads going forward.
I use the Castrol SRF brake fluid. It is damn expensive, but has never boiled on me. I will be honest and say that I have run DE's on 12 month old brake fluid. I know that it is not the right thing to do. The SRF wet boiling point is so high that I don't believe that you need to change it every 6 months like the other fluids. Maybe I am wrong, but so far no problems.
I use the Castrol SRF brake fluid. It is damn expensive, but has never boiled on me. I will be honest and say that I have run DE's on 12 month old brake fluid. I know that it is not the right thing to do. The SRF wet boiling point is so high that I don't believe that you need to change it every 6 months like the other fluids. Maybe I am wrong, but so far no problems.
06-08-2007, 11:07 AM
#75
Race Car
I hear ya with the Hawks, Cameron. What are you going to try? I understand that I can drive on as well as get to and from the track on Hawk Blues. That will be my next pad purchase.
How expensive is SRF? I remember talking to someone once that used fluid that cost close to $100 - probably the same stuff.
The economics of minimizing or eliminating brake boiling and brake-intensive tracks involves a variety of options:
1) Ti front shields $80ish
2) Custom brake duct work $___
3) Upgrade from dish wheels for better venting $600+
4) SRF fluid. $___
5) Drive Slower: Free
Why doesn't anyone choose #5?
How expensive is SRF? I remember talking to someone once that used fluid that cost close to $100 - probably the same stuff.
The economics of minimizing or eliminating brake boiling and brake-intensive tracks involves a variety of options:
1) Ti front shields $80ish
2) Custom brake duct work $___
3) Upgrade from dish wheels for better venting $600+
4) SRF fluid. $___
5) Drive Slower: Free
Why doesn't anyone choose #5?