G
Guest
·Many people have mentioned the juddering they get on an EVO 6 at high speed. BTR in Castleford (who prepare rally cars) told me why it does it.
Apparently, the hub to which the discs fit is very small in comparison to the size of the disc. If it's not mated really carefully to the hub, it goes out of alignment enough to wobble at speed. The size of the disc vs hub amplifies the judder.
Add to this the fact that EVO discs warp very easily and you can see what the problem is.
Apparently, they get 2 rallies out of a set of discs before they have to junk them. A reskim on a road car doesn't always fix the problem. He told me the alignment on the hub has to be correct within 1/10th of a mm or less! To set this can take an hour a wheel.
One of the manufacturers is making up some EVO discs to fix the warping problem. I'll let you all know when I know more.
Apparently, the hub to which the discs fit is very small in comparison to the size of the disc. If it's not mated really carefully to the hub, it goes out of alignment enough to wobble at speed. The size of the disc vs hub amplifies the judder.
Add to this the fact that EVO discs warp very easily and you can see what the problem is.
Apparently, they get 2 rallies out of a set of discs before they have to junk them. A reskim on a road car doesn't always fix the problem. He told me the alignment on the hub has to be correct within 1/10th of a mm or less! To set this can take an hour a wheel.
One of the manufacturers is making up some EVO discs to fix the warping problem. I'll let you all know when I know more.