Big Goon

I have the ScoobySport Brembo convertion with sine wave discs 28mm x 295mm, after about 6000 miles the discs are shot to pieces, SS have said they'll gladly replace them under warranty, but I've heard from others that this disc is known to warp.

My question is do I get another pair of the same under warranty, or could I upgrade to a 330mm disc of some kind, using these calipers ? and maybe a pad upgrade suggestion

TIA, Shane.

RON

OOPS!
Maybe you should lighten the load on the brakes a bit 'fat boy'!
I thought these brakes were bullet proof, obviously not!
Ron

Big Goon

Thanks for the constructive help Ronald ;P

At least my car has the power to warp Brembo discs

Hoppy

BG, I think you have APR discs (not Brembos) which are virtually immune to warping, but not immune to wear. It's not clear what your problem is but if Scoobysport will replace them under warranty, for whatever reason, you will not get better discs than these from anyone at any price.

Good luck,

Richard.

Big Goon

Ok thanks Rich,

They have suddenly developed terrible judder when I warm them up and do a couple of 3/4 strength presses from about 100mph.

They have been carefully bedded in and have done one very carefull trackday about 2000 miles ago.

Otherwise all my driving is motorway and rarely do I use my brakes in anger, so strange that they should warp

Hoppy

BG, that certainly sounds like warping but is most unusual with those discs. Maybe you've sat with your foot on the pedal while discs are hot? That will do it. Another possibility is that you've got pad compound unevenly spread over the disc surface from some hard braking but this would show up whenever you apply the brakes and wears off after a few days. Whatever, Scoobysport will sort them for you

Richard.

stratman

All discs must be seated completely flat on the hub. If there is any dirt present you will end up with high spots after a few months use and this will give the symptoms of warped discs.

The disc run-out should be check to see if within manyfacturers tolerence when fitted but unfortunately a lot of mechanics dont do this.

Also if you have the habit of sitting with your foot on brake pedal the heat concentrates on one spot causing warping.

Big Goon

Thx Strat,
gonna get them fixed in next week or two, they are getting worse and worse, cant help feel that maybe its something else causing it. :/

johnfelstead

probably your pads are buggered. I have had this with Pagid Blues in the past. What you using?

JohnS

iTrader: (1)

You might find the following article of interest:

http://www.stoptech.com/whitepapers/...otors_myth.htm

Claims that most cases of warped discs are just instances where pad material has transferred to the disc (usually when both are hot). This was certainly the case with a set of the AP 330mm discs I had on my previous car, as you could see an outline "shadow" of the pad on the disc, and at Cadwell Park the brake vibrations were bad and getting worse. I swapped the pads at lunchtime, bedded them in as best I could and then just gave them hell (ie repeated severe abuse!), thinking that they were scrap anyway. Within a couple of sessions, the vibrations actually decreased, and the disappeared completely. After this, I never had any problems with the brakes vibrating, and the discs lasted well until the end of their life.

John

Big Goon

Thanks for the pointers, much appreciated.

I think its likely to be the pads too, as I was very careful when bedding the discs in.

My pads are whatever SS fitted as part of the conversion kit,
Will find out shortly as I'm going back up there next week.

Floyd

iTrader: (9)

I've had the Brembo discs in the past (although yours are AP) and they've all warped. I tried everything, different pads, longer bedding in, no sitting on the breaks on motorway slip roads etc, but they still warped. Eventually it shagged my steering rack and the seals went.

I took the discs off and got them skimmed and this cured the problem totally. All I can think of is that the material warped with the heat and stayed that way, until I trued them back up.

F

Pete Croney

Hi Shane

We'll check them out when you come in and if they are warped, we'll replace them under warranty.

If they are warped, this will only be the 4th set in 3 years. Considering most of our customers use them on track, I doubt any other manufacturer could claim such a good record. This is why we are using AP discs again (yours are AP) with our new KAD brake kits.

Big Goon

Aye Pete, I'm sure you'll sort them, not worried about that

Just interested to know if bigger discs can be fitted on the Brembo calipers, say something like a 330mm disc ?

Big Goon

And also a 330mm disc will look much nicer in my spinky new 18" Technomagnesia F1's