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drmini in aust
PostPosted: Sun Aug 01, 2010 6:58 pm 
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Beware of low speed grinding/scraping noises (go away at higher speed) if you have discs. My car stopped OK but has been making these noises for a week. The S rotors both measured even thickness all over (0.345") with a micrometer.
I then found that the LH rotor had 4 cracks across the surface, 2 of them were right through the rotor and went to the outer edge.

It now has 2 new rotors on.

Brakes are important for you and everybody on the road, don't take chances.

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Last edited by drmini in aust on Mon Aug 02, 2010 7:32 pm, edited 1 time in total.

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Asphalt
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PostPosted: Sun Aug 01, 2010 11:20 pm 
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Do you know where they came from or manufactured them? I guess that's not a failure that happens with good quality discs under normal use...

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Tombo
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PostPosted: Sun Aug 01, 2010 11:58 pm 
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I've seen these types of cracks in rotors, and wear nearly to the point of seperating the disk from the hub. It's alarming.

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AEG163job
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PostPosted: Mon Aug 02, 2010 9:21 am 
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Now I'm worried. Bought a pair for $145.00 off fleabay some time ago as spares.

Probably made in Uzbekistan :P

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drmini in aust
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PostPosted: Mon Aug 02, 2010 5:51 pm 
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Asphalt wrote:
Do you know where they came from or manufactured them? I guess that's not a failure that happens with good quality discs under normal use...

Yes I do know, I bought them from my local brake shop, the brand is RDA (they are made in China). The other one has a few short cracks, I'll bit it too.

To be fair though, They have done a few track days using Greenstuff pads, but that was years ago. They got pretty warm back then.
Stock rotors are all only grey cast iron, I guess I was just unlucky with these ones. I've bought S rotors from Karcraft and others over the years, never had a problem.

Like I said- if you see cracks, get rid of em....
:!:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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scotta_74
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PostPosted: Mon Aug 02, 2010 10:07 pm 
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^^^^^^^Your just a hoon Doc :D

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GT mowog
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PostPosted: Mon Aug 02, 2010 10:09 pm 
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scotta_74 wrote:
^^^^^^^Your just a hoon Doc :D


Maybe, but soon he'll be eligable for the 50% discount on his rates :wink:

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drmini in aust
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PostPosted: Mon Aug 02, 2010 11:14 pm 
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GT mowog wrote:
scotta_74 wrote:
^^^^^^^Your just a hoon Doc :D


Maybe, but soon he'll be eligable for the 50% discount on his rates :wink:

Only if I stop work, and I can't afford to. :cry:

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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GT mowog
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PostPosted: Tue Aug 03, 2010 7:12 am 
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drmini in aust wrote:
GT mowog wrote:
scotta_74 wrote:
^^^^^^^Your just a hoon Doc :D


Maybe, but soon he'll be eligable for the 50% discount on his rates :wink:

Only if I stop work, and I can't afford to. :cry:


Oh, dam that work stuff :evil: It gets in the way of life and enjoyment. Oh well at least you have somewhere to do your foreign orders.....

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