| Author | Message | ||
     Boogman |
Hi All, I just did my first track day ... absolutly had a blast .. the XB9S was great .. the top speed was the only prob and well I didnt expect to keep up with the R1s etc ...but in the corners the bike just was great ... I got home and noticed that there is now spotting on the front disc rotor ... on both sides ... I was very heavy on the breaks I know however not being mechanically minded is this a problem ? or is this OK ? any advise appreciated. the pads look evenly worn .. and I just had it serviced .. they told me that there is enough pads for about 5000km or so . I have searched through the forum for this topic and found a few messages about this ... but thought to ask .. cheers | ||
| Al_lighton |
Likely uneven deposits on your disc. They get called "hard spots" by some folks, but I don't think that's true. The brake compound can deposit unevenly on the rotor surface and create that look. It is likely that as you coast to a stop with the front brake on gently, you'll feel a little bit of unevenness in the deceleration. If there isn't any pulsing in the lever, it's likely just the uneven deposits on the rotor surface. I just started carrying a product from Braketech called a Brake Hone ($39.95, not on the web site yet). You chuck it up in your drill, and use it to remove the deposition layer on the rotor and add back a gentle cross hatching. I have NOT tried it yet, but my S3 has the same problem you've described and I plan on trying it soon (next front tire change) to see if it works as advertised. Supposedly, new pads will work much better for their life if you do this prior to putting on new pads. The pads will bed in better and leave fewer uneven deposits. We'll see. Here is a picture:  (Message edited by al_lighton on September 01, 2004) | ||
| Blake |
If the brakes still work well, no worries. Heat will cause unusual spotting and coloration. I like the idea of that brake hone. New pads combined with a fresh surface is just what the track doctor ordered. Looks kinda like a dingleberry hone though.  | ||
| Slowby |
a floating disc floats.and warps & bends& heat makes this happen fast. it gaoes back but makes spots when it's flexing. i also use the hone.three grades. i can feel the brake fade after a race day or so. grips great after a hone. it's an automotive tool you can get most any where. |
