John - it took me all day to figure out that you was you
Mike - sent you a PM.
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| Author: | madski [ Thu Aug 30, 2012 11:23 am ] |
| Post subject: | Re: Summit Main 8/27 - NESBA |
John - it took me all day to figure out that you was you Mike - sent you a PM. |
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| Author: | MrMotoRdr [ Thu Aug 30, 2012 1:09 pm ] |
| Post subject: | Re: Summit Main 8/27 - NESBA |
bwdst6 wrote: Thanks for the feedback on the rotors. Those buttons seem to be fine so I’m inclined to think the rotors are bent. Mike, can you send me a PM, txt or whatever with what you can get a new set of rotors for? Just the front two and whatever brand you think is best. Just so you guys know... The root cause of vibration when braking is that the rotors have a variance in the thickness at different points on the braking surface. If one side (thickness) is at 3.7 mm and the other side is at 3.85 mm, that .15mm thickness variance would be like you squeezing the brake lever a little bit harder at perfectly timed intervals around the rotor. Since you can't do that, the thickness of the rotor pushes the pistons back, or increases braking force momentarily when the pads contact the thicker part of the rotor, causing a vibration that you can feel at the lever, and/or through the clip ons. What causes the thickness variance you ask? Well, that's caused by excessive rotor run-out. As the warped rotor is pushed back into place by the pads (the floating buttons allow this to happen without you really taking notice), the rotors are worn thinner in the spots that make the initial contact with the pads and after the rotor is where it should be, within the pads, it stops moving... leaving thicker spots. You guys wanna see something really weird? I'll try to always carry my bowl shaped rotor with me for the next few years. When cold, it would actually push the pads back into the caliper and cause my lever to come back to the clip on! |
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| Author: | madski [ Thu Aug 30, 2012 2:26 pm ] |
| Post subject: | Re: Summit Main 8/27 - NESBA |
Good info Clint! |
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| Author: | GixxrSixxr [ Thu Aug 30, 2012 8:33 pm ] |
| Post subject: | Re: Summit Main 8/27 - NESBA |
Slitherin wrote: Was good to see everyone Monday. It was also nice to have a day with the big Orange thing in the sky vs what we had Sunday. Nate, hope you get that brake thing figured out. Was very odd to see everything looking 100% and still have it give you problems. Justin, find another bike and come play again. ill be back sometime. when, idk. i need a break for a while. when i come back itll prob be supermoto style for something different |
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| Author: | Wolley [ Fri Aug 31, 2012 6:58 am ] |
| Post subject: | Re: Summit Main 8/27 - NESBA |
Quitter 
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