AP floating disk upgrade

[s.mac]

Group Buy thread now open

[Ade]

Alcons are more durable than PFs.

Several GT3 owners have run PFs vs Alcons over 20-30k miles, and consensus shows that Alcons last longer.

[NZ_M3]

Originally Posted by The Gorilla

S.mac-Its a Disc / Belle combination, instead of the
CSL One piece discs.

CSL discs are two piece design - separated by titanium pins - it's a floating design, albeit only for radial expansion not axial expansion.

The proper floating discs like Alcon and Brembos are full floating - i.e. both axial and radial expansion separate from the Bell (which is usually aluminium)

Originally Posted by The Gorilla

I think the standard CSL Disc are very good, not sure why
somebody has not done just a caliper upgrade to run with
the standard CSL Discs.

They have actually ... and it's made by Alcon/UUC Motorwerks

It's a monoblock 6 front with the CSL front disc and 4 piston twin block with the CSL rear disc

Link here:

Fronts:
http://store.nexternal.com/shared/St...645&CS=uuc&All=

Rear:
http://store.nexternal.com/shared/St...646&CS=uuc&All=

[_Nathan_]

Simpsons do a kit with an AP 6 pot caliper to use the standard CSL disk too.

Think I'm going to move to PF full floating next. Rattle rattle rattle :D

[_Nathan_]

Originally Posted by Ade

Alcons are more durable than PFs.

Several GT3 owners have run PFs vs Alcons over 20-30k miles, and consensus shows that Alcons last longer.

Several GT3 owners use R888 out of choice so their credibility is in tatters

Sure the Alcon stuff is good but reports from CSL owners will be more relevant than GT3 owners, different weight distribution, different size disks, different calipers etc etc.

Also, there are threads started elsewhere by GT3 drivers entitled "Alcon problems" which doesn't quite give the impression of good quality control...

[shimmy]

God knows why you need them.

Stock brakes are perfectly adequate

[_Nathan_]

Fuchs - give Shimmy his login back.

[Ade]

Originally Posted by _Nathan_

Sure the Alcon stuff is good but reports from CSL owners will be more relevant than GT3 owners, different weight distribution, different size disks, different calipers etc etc.

None of those points above have anything to do with durability of a brake disc when it's being eroded by a brake pad. Same car, PF or Alcon disc, and the Alcons last longer than PFs.

Originally Posted by _Nathan_

Also, there are threads started elsewhere by GT3 drivers entitled "Alcon problems" which doesn't quite give the impression of good quality control...

That's only one person - Daz - who has been the ONLY reported problem of Alcons as far as a search on the interweb goes. And he had his discs removed, skimmed, dismantled, and every kind of fiddling by non-Alcon suppliers so far apart from actually going to the suppliers of his disc or Alcon themselves. Don't go scaremongering shit like this.

[TANKSLAPPER]

PF are the best, AP and Alcon are second best

ask Fuchs

[_Nathan_]

My point is that the CSL application is different to the GT3 application, the heat generated will be different, the cooling is different and the thermo properties of the disk will be different if it is a different shape and size.

I'm sure they are good but until someone has run both on a CSL until they have worn out I can't see how you can say with 100% confidence that one will last longer than the other?

If I were buying new I'd look at them certainly, having to remove the caliper to change the pads could be an issue for me as I imagine it is slower but other than that they look great, this thread is about replacing disks for an AP kit, is there even an Alcon disk available to fit the AP bell? If not the comments about Alcon are completely irrelevant anyway.

PS. When unspecified "problems" with AP stuff is used as a selling point for Alcon it is only fair to point out that regardless of what you buy people can and do have issues.