05-15-2019, 05:44 PM | #29 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
Location: Canada, eh!
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In my layman terms, the lower the torque from a pad the less heat gets generated. That's why normal dd pads are very hard and will last years, while performance pads are soft and will last a fraction of the time (as a generic comparison).
DTC70 is the most aggressive Hawk pad there is!!! (Per MU and temp resistance specs). Hence it will produce the most kinetic energy (resulting in shorter stops) but produce most thermal energy as a result (heat). Note that race teams pick pads based on a type of track and event duration. Heck even iRacing permits you to choose a pad type as part of a car's set up. Interestingly, many "aliens" pick low friction pads (vs medium or high), as they permit better brake modulation in corner entry and often times that's prefered over absolute stopping distances. But that's off topic. From a few posts ive read here, it seems that anyone (?) using top dog DTC70 runs into some sort of heat issue either boiling the fluid, or frying the calipers. OTOH a bunch of fast guys use DTC60 and dont seem to run into any issues. Of course stock Ferodos are no doubt the best choice for heat management as they dont even require DOT4 fluid per se. Hope this explains where i am coming from. Cheers! |
05-15-2019, 09:26 PM | #30 |
Drives: 1LE Join Date: Sep 2017
Location: East Coast
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Actually they have a DTC 80 now
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05-15-2019, 09:56 PM | #31 |
Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012
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Not the first time that i stand corrected: thank you!
DTC80 is ultra high torque with even higher optimum operating temps vs DTC70. May i suggest a sponsor to fund the brake budget lol! BTW DTC70 is described as extremely high torque vs DTC60 high torque. |
05-16-2019, 08:14 AM | #32 | |
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
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Quote:
The rate of heat generation should be independent of pad mu but you might perceive it to be greater because you wouldn't be using as much foot pressure on the pedal to make it happen. You'd be subconsciously linking heat generation to the amount of your effort required, which might feel like you're getting more heat output from less pedal input. At any rate, it's a thermal transient problem, where more severe transients (faster stops) would cause surface temperatures at the surfaces being heated to be significantly higher than the average through-thickness temperatures. In less severe transients, either from fewer mph's slowed or longer times taken to make happen, those temperature differences should be lower. If nothing else for the longer stops, air has more time to do some cooling. Norm
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05-16-2019, 12:19 PM | #33 |
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Thanks Norm! I was hoping you'd jump in here with more technical explanation
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05-16-2019, 12:32 PM | #34 | |
corner barstool sitter
Drives: 08 Mustang GT, 19 WRX Join Date: Jul 2012
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Quote:
Norm
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'08 GT coupe 5M (the occasional track toy)
'19 WRX 6M (the family sedan . . . seriously) |
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05-16-2019, 01:03 PM | #35 | |
Drives: 2018 ZL1 1LE Join Date: Feb 2009
Location: Bettendorf, Iowa
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I'm using the Essex AP kits front & rear. Inaugural outing back in March went well.....but was screwing around with some other things on the car and candidly wasn't getting much clean track. Headed back Memorial Day weekend with Chin and my best track bud and hope to push harder and really test them out. Sorry that'll be another week or so but will let you know how they compare to the stock ZLE Brembos. I can tell you that pedal feel was far better with the AP's. Will see if that holds up with higher speeds and better lap times.
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2018 ZL1 1LE "RAZECAR" 2016 2SS Convertible "NOTOPSS" (Sold) 2015 Z/28 #306 "ITZFAST" 2010 2SS Coupe "FASSTER" (Sold) 2002 SS/RS "02FASST" (Sold) 2007 Factory Five Racing GTM "REDBLUR" (Sold) "There are two kinds of cars. Red....and everything else!" |
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05-16-2019, 01:22 PM | #36 |
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Oh my...the AP rotors look much smaller vs stockers...what pads did ya decide on?
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05-16-2019, 09:51 PM | #37 | |
Drives: A few Join Date: Oct 2017
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HPDE/DD: 2018 Camaro ZL1 1LE || HPDE/DD: 2015 Subaru BRZ ||Tow Vehicle: 2004 GMC Sierra 2500 8.1L || Weekend toy: 1994 MR2 Turbo || The other weekend toy: 1993 MR2 Turbo || Track car: 1998 Integra Type-R || Race car: 1996 Integra GS-R || New race car build: 1992 Honda Civic Hatchback Too many cars.. never. |
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05-16-2019, 09:52 PM | #38 | |
Drives: A few Join Date: Oct 2017
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Also pads that are MUCH thicker result in it making financial sense eventually also. Now for a ZL1 1LE.. maybe not. But for an SS 1LE it could be worth it if you'll track it for years.
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-Dave
HPDE/DD: 2018 Camaro ZL1 1LE || HPDE/DD: 2015 Subaru BRZ ||Tow Vehicle: 2004 GMC Sierra 2500 8.1L || Weekend toy: 1994 MR2 Turbo || The other weekend toy: 1993 MR2 Turbo || Track car: 1998 Integra Type-R || Race car: 1996 Integra GS-R || New race car build: 1992 Honda Civic Hatchback Too many cars.. never. |
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05-16-2019, 09:56 PM | #39 | |
Drives: A few Join Date: Oct 2017
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OK Now I'm very interested. I haven't reached the limits of the brakes yet but pedal feel in the Camaros is.. well.. shit IMO.
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HPDE/DD: 2018 Camaro ZL1 1LE || HPDE/DD: 2015 Subaru BRZ ||Tow Vehicle: 2004 GMC Sierra 2500 8.1L || Weekend toy: 1994 MR2 Turbo || The other weekend toy: 1993 MR2 Turbo || Track car: 1998 Integra Type-R || Race car: 1996 Integra GS-R || New race car build: 1992 Honda Civic Hatchback Too many cars.. never. |
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05-16-2019, 11:59 PM | #40 | |
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Quote:
Ive run double thickness DSUNOs on my Vette and from my recollection i did gain soms longevity but not all that much, yet the price point was dear. What pads are you using RedSS??? |
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05-17-2019, 12:04 AM | #41 |
Drives: 1LE Join Date: Sep 2017
Location: East Coast
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AP sure are pretty.
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05-17-2019, 06:28 AM | #42 |
Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
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