Paragon 400mm rotors

[TrackDay]

Has anyone tried these in an aggressive road course scenario? Since I need to replace my rotors for next year anyway I'm considering a move to the 21+ rotors and this looks like a reasonable option since I don't have a 21+ factory center hat.
https://paragonbrakes.com/2-piece-r...34mm-21-dodge-charger-challenger-srt-hellcat/

I have the ACR calipers so it's just a different spacer for them and I can use the larger rotors.

 

[rayzazoo]

Has anyone tried these in an aggressive road course scenario? Since I need to replace my rotors for next year anyway I'm considering a move to the 21+ rotors and this looks like a reasonable option since I don't have a 21+ factory center hat.
https://paragonbrakes.com/2-piece-r...34mm-21-dodge-charger-challenger-srt-hellcat/

I have the ACR calipers so it's just a different spacer for them and I can use the larger rotors.

I've run fronts for ~1 year. I swapped from the NOA Brembo P37018N to the non-NOA Brembo P37018 shortly after a few drives. The braking difference was noticeable since the NOA are ceramic based vs non-NOA semi-metallic. Unfortunately, I haven't had them on a road course or with track-focused pads.

From a weight perspective:

OEM Hat: 1.8lbs
OEM 390mm: 29.2 lbs (31 total)
390mm: 25.6 lbs (27.4 total)
400mm: 26.3 lbs (28.1 total)

A few pictures here
https://www.hellcatforum.org/threads/paragon-brake-rotor-rings-oem-hat.15704/#post-448564

There's also https://www.ceramicdisctech.com/ and still in development.

 

[TrackDay]

Thanks for the feedback.

 

[rayzazoo]

Thanks for the feedback.

You're welcome, and it would be great to see a track comparison of Paragon versus Demon Performance rotors.

You mentioned Viper ACR calipers. It's the same rotor/caliper size as the 2015-2020 Hellcats, but with the benefit of lighter/prolonged heat transfer titanium pistons (~2 lbs savings per front caliper).

The 2021+ cars have 400mm rotors and that's ~16lbs added in unsprung weight vs 2015-2020. Wesley Motorsports had a 2021 Charger Redeye and venture to say that is why the opt'd for the Viper ACR Caliper/rotors; 400mm to 390mm and piston benefit.

Material:
Demon Performance: proprietary cast iron
Paragon: CM-250 special formulated high carbon alloy cast iron

400mm rotors
OEM: 38.65 lbs (with OEM hat)

Demon Performance: 30.75 lbs (with DP aluminum hat)

Paragon: 29.7 lbs (with Paragon aluminum hat)

https://paragonbrakes.com/2-piece-r...34mm-21-dodge-charger-challenger-srt-hellcat/

390mm rotors
OEM: 31 lbs (with OEM hat)

Demon Performance: 25.39 lbs (with DP aluminum hat)
Demon Performance: ~24 lbs (rotor ring)

Paragon: 27.4 lbs (with OEM hat)
Paragon: 25.6 lbs (rotor ring)

360mm rotors (SuperStock/Demon)
OEM: 22.6 lbs

Demon Performance: 22.6 lbs

Brake Pads
Hawk DTC-70

• Type: Motorsport-grade race pad
• Material: High-performance race compound
• Friction Coefficient (μ): 0.80 ~ 0.90
• Operating Temperature Range: 400°F to 1,600°F (204°C to 871°C)
• Optimal Temperature Range: 800°F to 1,200°F (427°C to 649°C)
• Torque: Extremely high
• Initial Bite: Aggressive and controllable
• Modulation & Release: Superior
  
  

Paragon PBP690T6-15 R7

• Type: Advanced high-speed track/competition pad
• Material: Metallic
• Friction Coefficient (μ): 0.48 ~ 0.53
• Operating Temperature Range: 212°F to 1,562°F (100°C to 850°C)
• Recommended Use: Advanced high-speed track events, competitions, and heavier cars requiring maximum braking performance

Brembo P37018

• Material: Low-Metallic
• Friction Coefficient (μ): 0.35 ~ 0.45
• Operating Temperature Range: -40°F to 1,200°F (-40°C to 650°C)

https://www.hellcatforum.org/threads/demon-performance-rotors-for-road-courses.13473/page-2

 

[TrackDay]

Thanks. I'm not too concerned about weight of the rotors. My focus is at least getting a little more surface area and thus heat capacity in the rotors to help me avoid brake fade. At Road America I can fade the DTC70 in 2 hard laps. I have a set of DTC80 front pads that are still in the box, waiting for the next time I think I've changed the hardware enough to possibly move the needle.
I know 390 to 400mm is a small difference, but it's an easy experiment when I replace the rotors.

 

[BULL]

Thanks. I'm not too concerned about weight of the rotors. My focus is at least getting a little more surface area and thus heat capacity in the rotors to help me avoid brake fade. At Road America I can fade the DTC70 in 2 hard laps. I have a set of DTC80 front pads that are still in the box, waiting for the next time I think I've changed the hardware enough to possibly move the needle.
I know 390 to 400mm is a small difference, but it's an easy experiment when I replace the rotors.

Given your ability to move your calipers out to accommodate 400mm, I'd do it..

.25

 

[rayzazoo]

Thanks. I'm not too concerned about weight of the rotors. My focus is at least getting a little more surface area and thus heat capacity in the rotors to help me avoid brake fade. At Road America I can fade the DTC70 in 2 hard laps. I have a set of DTC80 front pads that are still in the box, waiting for the next time I think I've changed the hardware enough to possibly move the needle.
I know 390 to 400mm is a small difference, but it's an easy experiment when I replace the rotors.

Paragon could perform similarly to GiroDisc/Demon Performance. Maybe benefit/tradeoff is Paragons are 2lbs heavier, indicating more material/heat capacity. Would need to test.

Thoughts on directing cool air to the rotors aside from the updated belly pan with brake ducts and additional air deflectors?

Could double the size of the current brake deflector by overlapping with another kit.



Or attach brake duct to the current brake deflector from the underbelly duct:



Perhaps adding something fabricated like a dust shield with brake duct tube (visual reference below) and attaching it to the caliper bolts (red). The areas in blue used to be the dust shield mounting points for the older SRTs with smaller rotors.

 

[DGatzby]

Thanks. I'm not too concerned about weight of the rotors. My focus is at least getting a little more surface area and thus heat capacity in the rotors to help me avoid brake fade. At Road America I can fade the DTC70 in 2 hard laps. I have a set of DTC80 front pads that are still in the box, waiting for the next time I think I've changed the hardware enough to possibly move the needle.
I know 390 to 400mm is a small difference, but it's an easy experiment when I replace the rotors.

Let’s try to go over to RA in May for MPV’s weekend. FYI that is one of things I really want to do next year, along with running one or more Donnybrooke.

 

[2ndgen]

Anyone have a solution as to how to mount those brake ducts on the AAD suspension parts?