Orthojoe's track build journal
#1891
I spent yesterday prepping my .1 GT3 for track work, but I skipped out on adjusting corner weights.
The alignment hoist I used is a 4 post with 2 rolling jacks. I can jack the exposed rear cross member in order to fit the scales below the vehicle, but I am unsure where to jack the front up from. The rolling jacks aren't wide enough to engange the usual lift points. Is there a front cross member under one of the underbody trays that I can use?
Also, how can I remove the front brake ducts to simplify toe adjustment? Adjusting front toe is a major pain with those on there, but I didn't want to snap the tabs off them in an attempt at removal.
The alignment hoist I used is a 4 post with 2 rolling jacks. I can jack the exposed rear cross member in order to fit the scales below the vehicle, but I am unsure where to jack the front up from. The rolling jacks aren't wide enough to engange the usual lift points. Is there a front cross member under one of the underbody trays that I can use?
Also, how can I remove the front brake ducts to simplify toe adjustment? Adjusting front toe is a major pain with those on there, but I didn't want to snap the tabs off them in an attempt at removal.
#1892
I already posted in another thread but I think it s more appropriate to continue that on a specific thread that talk about track use
Anyone is using the ferodo racing ds 1.11 brake pads?
I fitted them on my 991.1 gt3 and I did the bedding in procedure and even if they perform really well on track as soon as I m on the street with light braking they make some abrasive noise a little similar as when a pad is completely worn and they seem to be quiet agressive on the rotors
It was suggested that maybe the bedding procedure was not ok and that the pad material didn t transfer well on the rotor wich I think is completely possible but I tried to do the bedding a second time and did a second trackday but the noise is still the same so I would like to understand if it s the pad material
and it s normal or if it s the bedding that wasnt ok
The pads do not squeal at all it s just a slight sandpaper type of noise
Anyone is using the ferodo racing ds 1.11 brake pads?
I fitted them on my 991.1 gt3 and I did the bedding in procedure and even if they perform really well on track as soon as I m on the street with light braking they make some abrasive noise a little similar as when a pad is completely worn and they seem to be quiet agressive on the rotors
It was suggested that maybe the bedding procedure was not ok and that the pad material didn t transfer well on the rotor wich I think is completely possible but I tried to do the bedding a second time and did a second trackday but the noise is still the same so I would like to understand if it s the pad material
and it s normal or if it s the bedding that wasnt ok
The pads do not squeal at all it s just a slight sandpaper type of noise
#1893
Why would this be? It would be another variable in your set up potentially, but I don't see how it would be any more unpredictable than having the same tires front to back. If one has better cold grip for example, you note that and change your driving style/set up around it.
#1894
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Join Date: May 2012
Location: Mid-Atlantic (on land, not in the middle of the ocean)
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Why would this be? It would be another variable in your set up potentially, but I don't see how it would be any more unpredictable than having the same tires front to back. If one has better cold grip for example, you note that and change your driving style/set up around it.
#1895
The behavior of a tire isn't a constant during a session, it varies as the tire pressure and temp changes. The nature of this change could be quite different from one tire to the next, with some tires taking less or more time to develop grip, get greasy, etc. Tires can also vary a lot with respect to how they change as they accumulate heat cycles.
You could take it a step further and say that you must always have the same make/model of tire with the exact same level or wear and number of heat cycles. This still wouldn't mean that they get up to temp at exactly the same time, wear exactly the same, and lose grip at exactly the same time.
#1896
Nordschleife Master
Thread Starter
I already posted in another thread but I think it s more appropriate to continue that on a specific thread that talk about track use
Anyone is using the ferodo racing ds 1.11 brake pads?
I fitted them on my 991.1 gt3 and I did the bedding in procedure and even if they perform really well on track as soon as I m on the street with light braking they make some abrasive noise a little similar as when a pad is completely worn and they seem to be quiet agressive on the rotors
It was suggested that maybe the bedding procedure was not ok and that the pad material didn t transfer well on the rotor wich I think is completely possible but I tried to do the bedding a second time and did a second trackday but the noise is still the same so I would like to understand if it s the pad material
and it s normal or if it s the bedding that wasnt ok
The pads do not squeal at all it s just a slight sandpaper type of noise
Anyone is using the ferodo racing ds 1.11 brake pads?
I fitted them on my 991.1 gt3 and I did the bedding in procedure and even if they perform really well on track as soon as I m on the street with light braking they make some abrasive noise a little similar as when a pad is completely worn and they seem to be quiet agressive on the rotors
It was suggested that maybe the bedding procedure was not ok and that the pad material didn t transfer well on the rotor wich I think is completely possible but I tried to do the bedding a second time and did a second trackday but the noise is still the same so I would like to understand if it s the pad material
and it s normal or if it s the bedding that wasnt ok
The pads do not squeal at all it s just a slight sandpaper type of noise
#1897
I didn t get that kind of noise and visual abrasive rotor wear after just a few sessions on other pads as pagid rs29 or rsl1
I think that for some reason during bedding the layer of pad material did not went correctly on the rotor surface but I dont know why
But I also think that some normal road use will make things better
I think that for some reason during bedding the layer of pad material did not went correctly on the rotor surface but I dont know why
But I also think that some normal road use will make things better
#1898
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Join Date: May 2012
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The same is already true for front/rear tires even of the same make and model though, so these variables aren't really any different. Your front and rear tires will build heat differently, will wear differently, and act differently throughout the session. You make changes, add wedge/pressures ect to get around this.
You could take it a step further and say that you must always have the same make/model of tire with the exact same level or wear and number of heat cycles. This still wouldn't mean that they get up to temp at exactly the same time, wear exactly the same, and lose grip at exactly the same time.
You could take it a step further and say that you must always have the same make/model of tire with the exact same level or wear and number of heat cycles. This still wouldn't mean that they get up to temp at exactly the same time, wear exactly the same, and lose grip at exactly the same time.
#1900
Nordschleife Master
Thread Starter
Originally Posted by NotThatFast
I can't see the pics / links on messages 747 and 748 on this thread. Are they still available?
Thanks
Thanks
#1901
Ah! thanks for checking othojoe, I appreciate.
Any chance someone can opine on how legit/safe it is to attach the harness to the seat rather than the tub of the car? I think that you used the GMG plate for the sub-mount bar, but now the likes of canterell offer a bar that attaches to the bottom of the seat which means sub-mounts and lap belts can be mounted to the seat.
I am asking as I have to decide where to attach the harness for my GT3.2. The OEM Clubpsort mounts to the tub, but that means drilling and cutting carpets for my car. And since part of the 3 point is attached to the seat, maybe attaching the harness to the seat is acceptable (?)
Any chance someone can opine on how legit/safe it is to attach the harness to the seat rather than the tub of the car? I think that you used the GMG plate for the sub-mount bar, but now the likes of canterell offer a bar that attaches to the bottom of the seat which means sub-mounts and lap belts can be mounted to the seat.
I am asking as I have to decide where to attach the harness for my GT3.2. The OEM Clubpsort mounts to the tub, but that means drilling and cutting carpets for my car. And since part of the 3 point is attached to the seat, maybe attaching the harness to the seat is acceptable (?)
#1902
GT3 player par excellence
Lifetime Rennlist
Member
Lifetime Rennlist
Member
most DE cars have harness attached to the seat primarily to avoid cutting.
if prolly safer than not having harness at all
but all race cars have them bolted THROUGH the tub with large plates. that is the safer than bolting to the seat. but you will be hacking up your car.
if prolly safer than not having harness at all
but all race cars have them bolted THROUGH the tub with large plates. that is the safer than bolting to the seat. but you will be hacking up your car.
#1903
On the lightweight buckets the stock lap belts attach to the seat so the seat is probably a relatively safe place to attach. The sub straps are there only to keep the lap belts low on your hip bone so you don't slide down and have the belts cut you in half through the abdomen, so they don't bear the major stress in an impact.
#1904
Nordschleife Master
Thread Starter
Ah! thanks for checking othojoe, I appreciate.
Any chance someone can opine on how legit/safe it is to attach the harness to the seat rather than the tub of the car? I think that you used the GMG plate for the sub-mount bar, but now the likes of canterell offer a bar that attaches to the bottom of the seat which means sub-mounts and lap belts can be mounted to the seat.
I am asking as I have to decide where to attach the harness for my GT3.2. The OEM Clubpsort mounts to the tub, but that means drilling and cutting carpets for my car. And since part of the 3 point is attached to the seat, maybe attaching the harness to the seat is acceptable (?)
Any chance someone can opine on how legit/safe it is to attach the harness to the seat rather than the tub of the car? I think that you used the GMG plate for the sub-mount bar, but now the likes of canterell offer a bar that attaches to the bottom of the seat which means sub-mounts and lap belts can be mounted to the seat.
I am asking as I have to decide where to attach the harness for my GT3.2. The OEM Clubpsort mounts to the tub, but that means drilling and cutting carpets for my car. And since part of the 3 point is attached to the seat, maybe attaching the harness to the seat is acceptable (?)
#1905
Thank you for your feedback in particular the part about the electronics under the passenger seat which I was not aware of. I agree with CobaltCr that if the attachment to the seat is good enough for the stock 3 point then it should be ok for my purposes to attach the 6 point to the seat. I wonder if anyone in the US (none of your cars are clubsport equipped so the largest community facing these challenges) has gone through the hassle of attaching the lap belts to the tub of the car (reinforcement plates installed properly, cut carpet etc)