A list member on the Mustang list and a racer, could use some help with the
following. His message is forwarded with his permission.
If you can help him, perhaps you could respond directly to him -- thanks!
His problem is beyond my ken.
Richard Nichols
rnichol1@san.rr.com
San Diego, CA
86 SVO 1C -- ESP
-----Original Message-----
From: Carlo Sparacio <carspar@email.msn.com>
To: RRAX-MUSTANGS <rrax-mustang@egroups.com>
Date: Monday, April 05, 1999 7:00 PM
Subject: [rrax-mustang] spliting rotors(long)
>Help!
>
>What am I doing wrong? I cant seem to get more than about 3-4 track events
>out of a set of front rotors on my 95 Cobra. I pretty much only drive the
>car to the track, and race it. I have cracked rotors using Hawk HP Plus
>pads and Hawk Black pads. I'll buy a new set of Ford rotors, bed the pads
>and In about 3-4 events, I have a big crack in one of them.
>
>It usually starts with a mess of tiny little cracks. (3rd event) and on the
>4th event, Im just waiting for them to split. They usually split in the
>pits, after my last session. As I drive away to go home, I find the
"thump"
>is there.
>
>I make 2 warm up laps, a few medium laps, then hot laps, and then a cool
>down lap and then drive around the "back area" for a few miutes to cool
>things down.
>
>I have 3 inch ducting split into 2-2 inch ducts attached right at the
center
>of the rotor (see pics
>http://www.geocities.com/pipeline/dropzone/1916/brakes.html )
>
>I have cracked rotors without the ducts too (once) I have been through 3
>sets of rotors since last summer. Usually I crack the right one first
>(never cracked the left one yet, but getting lots of tiny cracks in both)
>
>Im getting a little fade with the HP Plus, and No fade with the Blacks and
>Blues. And no fluid boil. (Ford HP)
>
>Bottom line.. is this problem from heat or cooling? Am I heating them to
>fast? Am I cooling them to fast? Can I possibly be cooling them too much?
>Or am I just using them to hard? I also heel toe downshift.
>Oh..one more clue...the inside of the rotor (that faces the motor) looks
>pretty good, no cracks or scoring. The outside seems to crack and score
>lightly.
>
>If you made it this far, your a dedicated mustang racer and reader...I like
>that... ;-)
>
>Help guys,
>Carlo Sparacio
>SSCC Team Mustang # 62 / 95 SVT Cobra
>NWR SCCA Solo2 ESP # 62
>SVT Cobra Racing Online! http://www.geocities.com/pipeline/dropzone/1916
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