*The FL5 Track Junkie Thread*

[svvitch]

Road Atlanta stands as one of the most thrilling places I’ve driven in the country. High Risk - High Reward.

The videos I've watched look like a blast. There are several days upcoming this fall. I am debating going in October or not.

Sponsored

 

[MooMoo]

Anyone gonna be at Pineview run with Masstuning this Saturday by any chance?

 

[Gansan]

I'm going to bring up some points in the braking discussion:

If you a slowing a car down a certain amount, whether you do it with max braking or 70% braking, the change in the car's kinetic energy is identical. Therefore, the total amount of heat energy generated by friction in the brakes is the same. (Exclude aero drag, bearing friction, etc.) The difference is that maximum braking will generate the heat at a higher rate for a shorter time.

This can help marginally because long braking gives time for the heat to soak into the thick rotors compared to a quick but intense burst. But these are relatively small differences and I wouldn't worry about it until you're running endurance races. The real reason to brake hard is to shorten your braking zones.

ABS
Could the ABS pump, a small 12 volt motor cycling for a few seconds, generate much energy at all compared to the total kinetic energy accumulated by a 300hp gas engine at full throttle down the entire straight? No. Can that tiny amount of heat travel through many feet of thin, uninsulated tubing without radiating away to the air? Not really.

 

[PointByPatrol]

I'm going to bring up some points in the braking discussion:

If you a slowing a car down a certain amount, whether you do it with max braking or 70% braking, the change in the car's kinetic energy is identical. Therefore, the total amount of heat energy generated by friction in the brakes is the same. (Exclude aero drag, bearing friction, etc.) The difference is that maximum braking will generate the heat at a higher rate for a shorter time.

This can help marginally because long braking gives time for the heat to soak into the thick rotors compared to a quick but intense burst. But these are relatively small differences and I wouldn't worry about it until you're running endurance races. The real reason to brake hard is to shorten your braking zones.

ABS
Could the ABS pump, a small 12 volt motor cycling for a few seconds, generate much energy at all compared to the total kinetic energy accumulated by a 300hp gas engine at full throttle down the entire straight? No. Can that tiny amount of heat travel through many feet of thin, uninsulated tubing without radiating away to the air? Not really.

Also factor in if the cars weren't braking from the same speed. Floored to the 3 vs floored to the 5. Kinetic energy would increase.

 

[Gansan]

Also factor in if the cars weren't braking from the same speed. Floored to the 3 vs floored to the 5. Kinetic energy would increase.

Very true. That would tend to increase the heat load during hard braking. However, that's only a few percent and not a huge difference.

 

[MooMoo]

Awesome day at Pineview run. What a car. Very fun track, 1.8 miles and felt more like a big auto cross with a faster straight (like 90mph) and rest lower speeds, very technical. A bit bumpy as they are still working on it but a lot of fun. I had no idea what the line was (could not find anything on youtube with a guide since its a fairly new track) so I spent the whole day just having fun and trying to figure it out. Car did not even come close to over heating, was only 80 out and I was not pushing that hard/not a super fast track.

Still struggling with the brake judder, although was way better than my last track day where the car was barely drivable. It got much better after sanding the pads but after a couple of events its back at the same. I think its the paragon pads, they are prone to leave deposits. I can't say for sure but I am going to get something else, likely either CSG or Ferodos.

 

[svvitch]

Give the ebc sr11 a try. Curious other thoughts on them.

Looks like a fun track. Similar to my local track I think. Did it flow well despite being busy?

 

[PointByPatrol]

Awesome day at Pineview run. What a car. Very fun track, 1.8 miles and felt more like a big auto cross with a faster straight (like 90mph) and rest lower speeds, very technical. A bit bumpy as they are still working on it but a lot of fun. I had no idea what the line was (could not find anything on youtube with a guide since its a fairly new track) so I spent the whole day just having fun and trying to figure it out. Car did not even come close to over heating, was only 80 out and I was not pushing that hard/not a super fast track.

Still struggling with the brake judder, although was way better than my last track day where the car was barely drivable. It got much better after sanding the pads but after a couple of events its back at the same. I think its the paragon pads, they are prone to leave deposits. I can't say for sure but I am going to get something else, likely either CSG or Ferodos.

Ferodo's are excellent pads, but the price is crazy! You get a lot of bang for the buck with Paragon's. I'm not really running into the brake judder issue. I'm on R5's, but I have the dust shields removed. I wonder if super high heat is causing your judder issue???

 

[MooMoo]

Ferodo's are excellent pads, but the price is crazy! You get a lot of bang for the buck with Paragon's. I'm not really running into the brake judder issue. I'm on R5's, but I have the dust shields removed. I wonder if super high heat is causing your judder issue???

Yeah it definitely is heat related as it gets worst as the session goes. It was mostly solved a month ago, braking was feeling good after I sanded the pads. Then did a auto cross (5-10 minute sessions so not really a traditional autox) and on the way home I could feel the juddering, was hoping would go away with some driving but not really. Then was hoping maybe a few hard braking at the track could get rid of the deposits but nope. It was fine first too sessions but by the 4th session it was pretty bad. My next try is to actually sand the rotors a bit and re bed.

Also you give me a good idea about heat, I won't remove the shields but I do have a mesh on the brake vent and its the one that came with the mud flaps which i always thought was way too restrictive, going to change it to my own mesh that is what I would use in front of a radiator.

As far as braking though, the paragons were fine, I like a bit more initial bit but they brake great and nice modulation.

 

[keller]

Give the ebc sr11 a try. Curious other thoughts on them.

Looks like a fun track. Similar to my local track I think. Did it flow well despite being busy?

I've just used SR11 for the first time, with brand new paragon rotors and A005 slicks. What a beast of a brake pad. Could easily overload the slicks, yet very good to modulate with low pedal pressure. I won't ever go back to rpx now...

 

[MooMoo]

Give the ebc sr11 a try. Curious other thoughts on them.

Looks like a fun track. Similar to my local track I think. Did it flow well despite being busy?

will look into EBC SR11, thank you.

The track flows pretty well, pretty fun. At first I thought there were going to be too many people on it (its not a super short track, 1.8 miles but being a bit of a slower track since very technical) but probably the best I ever seen with the point bys, people were on point and giving out point bys immediately which meant things were flowing nicely and for the first time I never once ran into a train.

 

[svvitch]

Wow that's nice no trains lol. No one wants a 20 minute parade ?

 

[MooMoo]

What are people using as rears if using EBC SR11 fronts?

 

[MooMoo]

I've just used SR11 for the first time, with brand new paragon rotors and A005 slicks. What a beast of a brake pad. Could easily overload the slicks, yet very good to modulate with low pedal pressure. I won't ever go back to rpx now...

What did you use on the rear?

 

[svvitch]

I have ebc blue at the moment.

Sponsored