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08-12-2009, 04:09 PM
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#1 |
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CSL Register Uber-poster!
 
Join Date: Sep 2009
Location: Olney, Bucks
Posts: 3,735
Casino cash: $9984  |
AP Racing disc cracked
Lent one of my rears to a mate after he got a puncture at Bedford trackday, (would do the same if any of you chaps are at Bedford and get in trouble, I only live down the road , also if you need a trailer ride home
 hopefully not, give me a call mob 07768 633717) got it back this morning and upon removing wheel to swap over, noticed a crack on the inner plate of the disc. This had manifested itself in the form of a rotational clicking noise, caused by a rough area of the outer disc plate (see pic) temporarily picking up the pad as the wheel turned, banging it against the top of the caliper housing and dropping it again. As you can see from the Vernier reading this disc has only got approx. 1 mm of wear on it from its original thickness of 20mm. The disc I believe is a CP4475-122G8 as the brake kit is a CP5144-1004.G8. There is no evidence of any thermal cracking on the surface of the disc. I know its difficult to estimate how long discs will last as a result of how many track/ring days it has done, but would anyone hazard a guess? Me thinks a visit to Thorney is on the horizon ! Last edited by DuncanR; 08-12-2009 at 04:38 PM. |
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08-12-2009, 04:13 PM
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#2 |
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S5 - Full Throttle
Join Date: Sep 2007
Posts: 469
Casino cash: $3876 |
Yeah I think they've had it mate.
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08-12-2009, 04:16 PM
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#3 |
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CSL Register Uber-poster!
Join Date: Sep 2009
Location: Olney, Bucks
Posts: 3,735
Casino cash: $9984 |
I was just doing you an email John ! Need I bother? when would be convenient to pop down as we discussed previously ?
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08-12-2009, 04:25 PM
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#4 |
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CSL Register Uber-poster!
 
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Duncan, could you post up a bigger photo please - i can't quite make out the crack...
 Oops, i just said 'crack' 
__________________
 Cha'mone Mother F**ker! |
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08-12-2009, 04:31 PM
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#5 |
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S5, Sport Off, DSC M-track
Join Date: Nov 2008
Posts: 801
Casino cash: $8979 |
Duncan, I have a 24" screen and your photo are to big for it.
stop large............ing it up I blame that Adam Forster he's to heavy on the brakes. 
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08-12-2009, 04:34 PM
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#6 |
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S5, Sport Off, DSC M-track
Join Date: Nov 2008
Posts: 801
Casino cash: $8979 |
I would use BMW OEM ones on the back they are mile better than AP's
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08-12-2009, 07:45 PM
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#7 | |
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S5 - Full Throttle
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Quote:
Was one of you guys the one who was sick when Adam was driving on track?
Last edited by Jaw_F430; 08-12-2009 at 07:48 PM. |
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08-12-2009, 04:39 PM
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#8 | |
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S5 - Full Throttle
Join Date: Sep 2007
Posts: 469
Casino cash: $3876 |
Quote:
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