Disk Skimming?
Discussion
Anyone had the disks on their TVR skimmed, and any recommendations?
My Tuscan's disks could do with a nice new surface putting on them as they're dull, look to have slight ridges developing, and are stained from the weather on the inside faces so not looking all that great shiney.
What's the recommended minimum thickness for the front and rear cross-drilled AP Racing disks that the Tuscan S has?
My Tuscan's disks could do with a nice new surface putting on them as they're dull, look to have slight ridges developing, and are stained from the weather on the inside faces so not looking all that great shiney.
What's the recommended minimum thickness for the front and rear cross-drilled AP Racing disks that the Tuscan S has?
It's quite rare that rotors warp. Most of the time the vibration is caused by pad build up. The heat on the disc is highest where the pad build is highest, casuing more pad material deposit, keep going and cementite can occur from the heat, causing a high spot that will not skim.
Worn (grooved discs) are for the bin if we are maintaining super car performance safely. If you're looking at skimming them though have a look for radial cracking at the drillings before spending dosh.
Worn (grooved discs) are for the bin if we are maintaining super car performance safely. If you're looking at skimming them though have a look for radial cracking at the drillings before spending dosh.
I know replacement is ultimately better but I don't think they need replacing, they're just looking a bit old and stained from the weather (I think the salt plays hell with them?).
If I was going to get it done I would have it done at a place that has a proper on car brake skimming machine like one of these. http://www.procutusa.com/lathes.aspx . Imho if you're going to the effort of taking the disks off and getting some random machinist with a lathe to skim them, you may as well replace them with new ones.
Cracks around the drillings are a concern, but from all my time here on PH I've never heard of it happening to the AP disks that are fitted to Tuscans. The Tuscan is a very "over braked" vehicle so the disks aren't given a very hard time heat wise, especially if you don't track it regularly.
ETA: just look at the OEM endorsements for the Procut machines.......can't be all that bad!
If I was going to get it done I would have it done at a place that has a proper on car brake skimming machine like one of these. http://www.procutusa.com/lathes.aspx . Imho if you're going to the effort of taking the disks off and getting some random machinist with a lathe to skim them, you may as well replace them with new ones.
Cracks around the drillings are a concern, but from all my time here on PH I've never heard of it happening to the AP disks that are fitted to Tuscans. The Tuscan is a very "over braked" vehicle so the disks aren't given a very hard time heat wise, especially if you don't track it regularly.
ETA: just look at the OEM endorsements for the Procut machines.......can't be all that bad!
Edited by dvs_dave on Tuesday 30th August 22:02
dvs_dave said:
I know replacement is ultimately better but I don't think they need replacing, they're just looking a bit old and stained from the weather (I think the salt plays hell with them?).
If I was going to get it done I would have it done at a place that has a proper on car brake skimming machine like one of these. http://www.procutusa.com/lathes.aspx . Imho if you're going to the effort of taking the disks off and getting some random machinist with a lathe to skim them, you may as well replace them with new ones.
Cracks around the drillings are a concern, but from all my time here on PH I've never heard of it happening to the AP disks that are fitted to Tuscans. The Tuscan is a very "over braked" vehicle so the disks aren't given a very hard time heat wise, especially if you don't track it regularly.
ETA: just look at the OEM endorsements for the Procut machines.......can't be all that bad!
The discs do crack, and it can only take one track day. Sagaris, Tuscan and Tamora. If I was going to get it done I would have it done at a place that has a proper on car brake skimming machine like one of these. http://www.procutusa.com/lathes.aspx . Imho if you're going to the effort of taking the disks off and getting some random machinist with a lathe to skim them, you may as well replace them with new ones.
Cracks around the drillings are a concern, but from all my time here on PH I've never heard of it happening to the AP disks that are fitted to Tuscans. The Tuscan is a very "over braked" vehicle so the disks aren't given a very hard time heat wise, especially if you don't track it regularly.
ETA: just look at the OEM endorsements for the Procut machines.......can't be all that bad!
Edited by dvs_dave on Tuesday 30th August 22:02
http://www.circuitsupplies.com/
Do a resurfacing service, they get the disc's re-ground so it's ok for grooved or drilled disc's, they are Ferodo and AP specialists, they will only do them if they are not cracked, and well within the minimum thickness. as they take off aprox 0.2mm per side.
I had my AP disc's done as they was a thickness variation of 0.1mm, and had a lot of vibration, but now they are as good as new. as said max wear is normally 1.2mm so this will remove a lot of the life of the disc, mine was still had only worn 0.4mm so still have 0.4mm life left. but next time it will be new disc's
Do a resurfacing service, they get the disc's re-ground so it's ok for grooved or drilled disc's, they are Ferodo and AP specialists, they will only do them if they are not cracked, and well within the minimum thickness. as they take off aprox 0.2mm per side.
I had my AP disc's done as they was a thickness variation of 0.1mm, and had a lot of vibration, but now they are as good as new. as said max wear is normally 1.2mm so this will remove a lot of the life of the disc, mine was still had only worn 0.4mm so still have 0.4mm life left. but next time it will be new disc's
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