TRAKCAR does ED
10-15-2015, 08:00 PM
#556
Former Vendor
Peter
The pads that you run are supposed to develop a transfer layer. This improves disc wear. The shutter is most likely down to not running at the ideal brake temp.
But as you told me already, the issue went away later in the day with higher brake temps.
The pads that you run are supposed to develop a transfer layer. This improves disc wear. The shutter is most likely down to not running at the ideal brake temp.
But as you told me already, the issue went away later in the day with higher brake temps.
10-16-2015, 02:45 AM
#557
Rennlist Member
Thread Starter
Peter. Re the pad transfer issue have had this recently when I did 3 dry track days on new pads (endless = far from endless!!). I think I may have warped the front rotors but was hard to tell as it appears later it may be transfer. I just keep on driving through it and it didn't affect overall brake performance. Threw harder pads on (oem left overs) and it started to clean the issue up nicely ) have now replaced front rotors and put new oem pads on ( original discs had equivalent of perhaps 10 plus track days on them). They could have gone another 2-3 but decided on tbd cautious side. If you have transfer or even run out my advice drive through it. If it's not upsetting abs then it will just give vibration through wheel and pedal and transmit a bit if vibration to cabin but they will still do the job...
Stay safe.
Stay safe.
Looks like it's staying dry today so it will be completely gone after a couple of laps.
10-16-2015, 02:57 AM
#559
Rennlist Member
some trips for snow - TC off, pull fuse for ABS (there's a reason Audi quattros came with a switch) and stay in high gear, all comes down to momentum, feel and deftness of reactions- can be great fun if you don't over extend your self i.e keep straight line speed down and avoid the brakes and enjoy the slides through corners at 15mph at max angle of attack.
Hope Chris brings the Ozzy weather with him... not to rub it in its been 30+ last few days (our spring)
Hope Chris brings the Ozzy weather with him... not to rub it in its been 30+ last few days (our spring)
10-16-2015, 09:39 PM
#562
Rennlist Member
Thread Starter
Wow, what a couple of days here in Dijon.
Bitterly cold.
Its really hard for me to learn a track in the rain (Snow even) and then the second day unlearn that and figure out this difficult track. Dijon Pernois is one of the most difficult tracks I have ever been to.
Granted; I only did about 30 laps due to 2 red flags this morning and lots of much slower and much faster cars then me on a 1:35 laptime means you have to account for those cars and give them some room. There where AMG GT3 cars, 991 CUP cars, Clio CUP cars etc. but also stock 4cyl BMW's with green drivers..Then I corded my tires at 3PM so done for the day. So maybe it will be better Sunday.
I was really lucky to share a garage box with a bunch of Swiss guys that were super nice. They own a raceshop, one was a Porsche technician and they helped me out a lot.
They jumped in the car with me to show me the line (This is their home track) and were just fun to be around. Funny guys.
I corded my left rear tire and it was only my 3rd track day; 1 day Paul Ricard, one day Dijon slick as snot so no wear and just 20 laps today. This track is coarse, low grip, stupid aggressive on killing tires, crazy cupping of the tires wear. My outer left front is also taking a beating but much less than the rear. Strange because the car understeers out of the corners.
So with chunks of my left rear outside tire missing we go to the onsite Yokohama trailer only to find out that their machine cant handle 21" Great guys but didn't have the equipment.
Its France, Friday 4PM now....
So my new Swiss friends start Googling and hammering away on their phones.
Porsche Dijon; they are too busy, rude and don't give a ****. They have an opening Thursday...
Porsche assistance; call Porsche Dijon, or they send a flatbed... To tow it to Porsche Dijon. So absolutely useless.
Porsche Lyon; no way, to busy screw off. I'm offering to pay any special fee's they can come up with. No go. No suggestions, no interest.
I have 3 track days to go before I get to a Porsche dealer where I do have an appointment....
Start calling BMW, Mercedes dealers. They are now closing at 5PM but at least very friendly and helpful, they give us independent shops that can handle 21". Called them all. None of those wanted to do it..
Finally we get lucky and a Michelin Truck tire place that will do it and will wait for us, we borrow the tools from Yokohama to change CL wheels and drive there. Got is done for 80Euro. 2 new tires installed the right one I kept as a spare in great shape still. The Swiss guys missed their dinner reservation so I took them all out for dinner, we left there at midnight..
According to the Porsche mechanic who was also a very fast driver and who has setup 991's and even has test driven Pre-production test cars with Porsche my alignment is pretty good except for too much caster in the front but he was happy how the tires looked but this track is just crazy. We didn't have the time, but I was now ready to stiffen the rear sway bar up because this is a complex track that can use more car rotation than I am able to get out of the car now. Had high speed understeer that we could have easily fixed but didn't have the time for, hopefully Sunday.
The track is coming to me now, but I have a lot to learn here still and I will have to take it a bit easy on my last rear tires, only a few flyers where I can kill the tires onto the straight..
Anyway, aping some fast drivers in GT3's and even a 991RS (Went home killed his rear tires as well) with some advise from the Swiss guys this is the best I could do today with a 220lb passenger aboard; It was hard work, really look forward to warmer weather and more track time Sunday!!
Bitterly cold.
Its really hard for me to learn a track in the rain (Snow even) and then the second day unlearn that and figure out this difficult track. Dijon Pernois is one of the most difficult tracks I have ever been to.
Granted; I only did about 30 laps due to 2 red flags this morning and lots of much slower and much faster cars then me on a 1:35 laptime means you have to account for those cars and give them some room. There where AMG GT3 cars, 991 CUP cars, Clio CUP cars etc. but also stock 4cyl BMW's with green drivers..Then I corded my tires at 3PM so done for the day. So maybe it will be better Sunday.
I was really lucky to share a garage box with a bunch of Swiss guys that were super nice. They own a raceshop, one was a Porsche technician and they helped me out a lot.
They jumped in the car with me to show me the line (This is their home track) and were just fun to be around. Funny guys.
I corded my left rear tire and it was only my 3rd track day; 1 day Paul Ricard, one day Dijon slick as snot so no wear and just 20 laps today. This track is coarse, low grip, stupid aggressive on killing tires, crazy cupping of the tires wear. My outer left front is also taking a beating but much less than the rear. Strange because the car understeers out of the corners.
So with chunks of my left rear outside tire missing we go to the onsite Yokohama trailer only to find out that their machine cant handle 21" Great guys but didn't have the equipment.
Its France, Friday 4PM now....
So my new Swiss friends start Googling and hammering away on their phones.
Porsche Dijon; they are too busy, rude and don't give a ****. They have an opening Thursday...
Porsche assistance; call Porsche Dijon, or they send a flatbed... To tow it to Porsche Dijon. So absolutely useless.
Porsche Lyon; no way, to busy screw off. I'm offering to pay any special fee's they can come up with. No go. No suggestions, no interest.
I have 3 track days to go before I get to a Porsche dealer where I do have an appointment....
Start calling BMW, Mercedes dealers. They are now closing at 5PM but at least very friendly and helpful, they give us independent shops that can handle 21". Called them all. None of those wanted to do it..
Finally we get lucky and a Michelin Truck tire place that will do it and will wait for us, we borrow the tools from Yokohama to change CL wheels and drive there. Got is done for 80Euro. 2 new tires installed the right one I kept as a spare in great shape still. The Swiss guys missed their dinner reservation so I took them all out for dinner, we left there at midnight..
According to the Porsche mechanic who was also a very fast driver and who has setup 991's and even has test driven Pre-production test cars with Porsche my alignment is pretty good except for too much caster in the front but he was happy how the tires looked but this track is just crazy. We didn't have the time, but I was now ready to stiffen the rear sway bar up because this is a complex track that can use more car rotation than I am able to get out of the car now. Had high speed understeer that we could have easily fixed but didn't have the time for, hopefully Sunday.
The track is coming to me now, but I have a lot to learn here still and I will have to take it a bit easy on my last rear tires, only a few flyers where I can kill the tires onto the straight..
Anyway, aping some fast drivers in GT3's and even a 991RS (Went home killed his rear tires as well) with some advise from the Swiss guys this is the best I could do today with a 220lb passenger aboard; It was hard work, really look forward to warmer weather and more track time Sunday!!
10-17-2015, 03:41 AM
#568
Three Wheelin'
10-17-2015, 06:12 AM
#569
Pro
Glad you got everything sorted - as you found, not easy in that part of the world. Hard to imagine they used to race F1 there!
Hopefully we'll have more fun on Sunday. Just about to leave for Dijon now.. See you later!
Hopefully we'll have more fun on Sunday. Just about to leave for Dijon now.. See you later!
