Who here has tracked their Emira?

[Blackthought_]

Anyone here track their Emira? If so, did you track the car 100% stock or did you upgrade parts? Particularly interested if you changed out the brake fluid, pads, tires, etc.

 

[gcmak]

These pads https://www.seriouslylotus.com/performance-friction-front-brake-pads-emira
Pads are down about a third maybe closer to half worn.
Cracks started to appear on my second track day, on the third after a session you could watch and hear them appear.

Thanks, the vagueness and shaky cam photo is amazing haha. Not surprised by the heat-checking and ultimate cracking of the cross drilled holes when using aggressive pads. You might still hear popping/crackling of the your new rotors on cool-down - it's usually more of the contraction of the ring to the rotor hat/bell - at least the noise doesn't change for me on different cars regardless of rotor type (as long as it's a 2 piece or especially floating type rotor).

Appreciate you sharing the photos and info though, helpful data-point for me on this platform.

 

[Martylemoo]

That’s the boxes for the pads.

 

[crashprash]

Original discs are not up to track work, no discs that have holes are. That’s why race teams don’t have discs with drilled holes.
You can see how destroyed my fronts are after three hard track days.
Lotus won’t entertain a conversation about upgrades so I am going it alone to make it work.
Not looking for increased braking just discs that don’t fall apart.

@Warren-RB curious to know why your discs (non-CCB) are drilled and slotted as opposed to just slotted?

 

[Tomwa]

I don't think the rules about drilled v slotted holds for Carbon Ceramics.

I've seen plenty of Carbon Carbon race brakes with drilled holes. Though on more serious "F1" style I guess you do also see something more like

But I don't think I've ever seen a Slotted Carbon rotor.

 

[crashprash]

I don't think the rules about drilled v slotted holds for Carbon Ceramics.

I've seen plenty of Carbon Carbon race brakes with drilled holes. Though on more serious "F1" style I guess you do also see something more like

View attachment 53103

But I don't think I've ever seen a Slotted Carbon rotor.

Yep, hence why I was curious about non-CCB (iron rotors).

 

[Wolfmayhem]

I tracked mine at an open track event this past Saturday. Nelson Ledges Road Course in Garrettsville, OH.

One question for you guys. Every session I went out the brakes were smooth for approximately the first ten minutes but then for the last ten minutes of each session there was a vibration when braking. I thought I cooked the brakes the first time this happened but then it was smooth again for the first ten minutes of the next session. I think I had a total of 5 twenty minute sessions during the day. In the end, though, very pleased with the car. Balanced and a lot of fun on a road course.

Anyone have an idea of why this would happen?

 

[Jinba ittai]

Sounds to me like the rotors are heating up, distorting, then cooling down and contracting back to normal. I’m not an experienced track guy and I’m not sure if that’s actually possible. Best theory I’ve got though.

 

[Blackthought_]

I tracked mine at an open track event this past Saturday. Nelson Ledges Road Course in Garrettsville, OH.

One question for you guys. Every session I went out the brakes were smooth for approximately the first ten minutes but then for the last ten minutes of each session there was a vibration when braking. I thought I cooked the brakes the first time this happened but then it was smooth again for the first ten minutes of the next session. I think I had a total of 5 twenty minute sessions during the day. In the end, though, very pleased with the car. Balanced and a lot of fun on a road course.

Anyone have an idea of why this would happen?

Are you sure that’s not the ABS kicking in? (Maybe it’s coming up after you push the car harder after warm up laps)

 

[lynchy73]

Are you sure that’s not the ABS kicking in? (Maybe it’s coming up after you push the car harder after warm up laps)

I noticed something similar and my OEM brakes weren’t the same after a few sessions. Not terrible, but felt a bit off. Later I swapped in Endless pads on the front and did a few more sessions, I started to get pretty strong vibration when braking that didn’t clear up. Tried re bedding but made no difference.

I suspect the OEM pads left lots of residue on the disks and this showed up more after changing to a different pad. I’ve since skimmed the disks and are now bedding them in (no vibrations now).

Need to be careful with those OEM pads. They aren’t really up to track usage and I suspect they can leave lots of residue on the disks that are difficult to remove.

 

[KAR120C]

I tracked mine at an open track event this past Saturday. Nelson Ledges Road Course in Garrettsville, OH.

One question for you guys. Every session I went out the brakes were smooth for approximately the first ten minutes but then for the last ten minutes of each session there was a vibration when braking. I thought I cooked the brakes the first time this happened but then it was smooth again for the first ten minutes of the next session. I think I had a total of 5 twenty minute sessions during the day. In the end, though, very pleased with the car. Balanced and a lot of fun on a road course.

Anyone have an idea of why this would happen?

I’ve had it happen on track to my Emira as well as other cars with street pads. I’ve heard that it’s due to uneven pad material transferring to disk. It goes away after it’s cooled down but unsettling when it happens. I’ve never had it happen when I’ve run a more aggressive pad. So must be something about the friction material getting too hot on a street pad.

 

[Jinba ittai]

I’ve had brake fade from hot pads. However I wouldn’t describe that as causing a vibration. The brakes just stopped working very well. Maybe that’s something different.