cast iron disc rebuild
 

I now have a pair of cast iron discs for my 748. The aluminium centre is faded on one of the discs so I was thinking about taking the discs off and getting them re-anodised, probably not gold but that by the by. Is this practical, can I use the same cir-clips to put them back together or should I replace them, if so where could I get them. Or should I just live with the faded one. You have to realise I have just been looking at the bike for the last 2 months and I want to get some thing done.


Mike

You can buy new bobbins, circlips and shims from Grand Prix Racewear (brembo importers).
Worth replacing the lot IMO if you're stripping them. The circlips are a definate though.

Thanks Nelly


Mike

its easy enough
make sure you glue all the clips back in place

MIGHT be worth looking inot using cast stainless rotors. Brembo have been replacing the cast iron rotors as there have been SOME instances of them exploding believe it or not.

Well so the story goes but does anyone know anyone, not a friend of a friend, who has had a disc explode.
Anyway I have just bought them so I intend to fit them for next season. They are so much better than any stainless ones I have ever used, especially with the four pad callipers.


Mike

I'm fairly sure there was someone in the DSC it happened to. Within the last 18 months i think.

I have only ever seen one picture. and that was on this board.
however you can not buy cast iron discs any more from brembo
make of that what you will

As anodising etches into the material will the carriers not be slightly thinner after the old anodising has been removed, if so the side play on a fully floating disc may be excessive, Just worth thinking about

As Nelly says... I did the lot a couple of years ago as they where getting quite loose and you can buy diffferent size shims to take away some slack.

I cant fault them but you must use soft pads as it seems the ones that have 'exploded??' were probably due to overheating / hard pads??maybe??

Andy

Re - anodising alli parts never gives the same finish as the original.
The results are unpredicatable, and you may get a finish you dont like.
doing it again, will have no effect on the thickness.

Iron Brake Rotors
 

Well if they are good enough for moto GP they are good enough for me. Just keep a close eye on the discs and check for cracks.

Mike

JHP have had a few fail on them in the past, and they are not good enough for Moto GP, they use carbon in the dry and cast STAINLESS in the wet, which is what brembo now supply.

Personally I sued cast iron for years and only ever had one set crack and that was on a Norton Commando back in the last century!