JohnnyReggae Posted October 30, 2012 Share New to the whole 2 wheeler thing. Have a question about braking, specifically a shudder when using the back break. I assume it is due to a misalignment of the brake callipers on the disk ? Link to comment Share on other sites More sharing options...
hayleyearth Posted October 30, 2012 Share New to the whole 2 wheeler thing. Have a question about braking, specifically a shudder when using the back break. I assume it is due to a misalignment of the brake callipers on the disk ? Or your disk is warped.Those two are the most common I would say, but in more detail it can also be the material of the pads them self (heat distribution over contact surface to disk). Try and allign the brakes 1st (that isnt too difficult - search for vids in the web) or pay attention to the disk when spinning the wheel to is if it is warped. edit: my famous spelling mistakes Edited October 30, 2012 by hayleyearth Link to comment Share on other sites More sharing options...
DR ◣◢ Posted October 30, 2012 Share As the lovely lady said "check alignment" Easy to do. Take a 5mm alen key and undo the two bolts holding the caliper to the mount. Don't remove them. Make sure the caliper is free to move. Now have a friend or pet hold the brake lever fairly tight to ensure the pads are making good contact with the disc. Now tighten the bolts back down to the correct torque specifications. It should be fine now unless your disc is in fact warped. Flatdog7 1 Link to comment Share on other sites More sharing options...
Ramrod Posted October 30, 2012 Share Are they Avid Juicy's? they had a problem with a shudder as well! Link to comment Share on other sites More sharing options...
NotSoBigBen Posted October 30, 2012 Share I have also had some success cleaning the braking surface with alcohol pads ..... Edited October 30, 2012 by NotSoBigBen Link to comment Share on other sites More sharing options...
Tumbleweed Posted October 30, 2012 Share It could simply be a loose calliper. Link to comment Share on other sites More sharing options...
JohnnyReggae Posted October 30, 2012 Share Just did a quick adjustment as per S.I.R. Maxxis suggestions, will see how it goes on the ride home this afternoon after work. I did notice that the calliper moved when tightening it despite the brake being pulled really hard, it also pulled the disk when tightening. I tried to hold it in place when tightening it to prevent that extra pull as the washer grips the metal. Clearly I may just be doing a hack job, but let's see how it goes Link to comment Share on other sites More sharing options...
Hairy Posted October 30, 2012 Share Just did a quick adjustment as per S.I.R. Maxxis suggestions, will see how it goes on the ride home this afternoon after work. I did notice that the calliper moved when tightening it despite the brake being pulled really hard, it also pulled the disk when tightening. I tried to hold it in place when tightening it to prevent that extra pull as the washer grips the metal. Clearly I may just be doing a hack job, but let's see how it goes Yo Johnny, welcome to the world of two wheels To take care of that caliper body sliding when fastening the bolts turn each one a quarter turn at a time to spread the loading and this usually helps when you get to the real "torquing down those mothers" to make sure they are well fastened. Keep an eye on it as usually the leading bolt is the culprit ... get this one fastened a bit first and then the other ... alternate and ride your bike that has two wheels, gears, suspension, handle bars, brakes and free hub .... this is all a new experience for you Link to comment Share on other sites More sharing options...
hayleyearth Posted October 30, 2012 Share Just did a quick adjustment as per S.I.R. Maxxis suggestions, will see how it goes on the ride home this afternoon after work. I did notice that the calliper moved when tightening it despite the brake being pulled really hard, it also pulled the disk when tightening. I tried to hold it in place when tightening it to prevent that extra pull as the washer grips the metal. Clearly I may just be doing a hack job, but let's see how it goes Yip, that usually happens - the movement when tiightening it. Like Hairy said, tighten them a bit at a time, not one all the way and then the other. This is also a reason why I allign them with the eye and not always the brake 'grabbing' way...play with it, it is worth it. M L 1 Link to comment Share on other sites More sharing options...
patches Posted October 30, 2012 Share It could simply be a loose calliper. or rotor... I've had shudder with both. orrrrrr... you're riding on the limits, taking flat corners with your rear wheel drifting out and the lateral flex of the wheel causes it to shudder as it slashes the terrafirma. that's the best kind of shudder! Link to comment Share on other sites More sharing options...
NotSoBigBen Posted October 30, 2012 Share or rotor... I've had shudder with both. orrrrrr... you're riding on the limits, taking flat corners with your rear wheel drifting out and the lateral flex of the wheel causes it to shudder as it slashes the terrafirma. that's the best kind of shudder! Rubbish man even on my Tektros that doesn't happen when I do that Link to comment Share on other sites More sharing options...
Joe Low Posted October 30, 2012 Share you're riding on the limits, taking flat corners with your rear wheel drifting out and the lateral flex of the wheel causes it to shudder as it slashes the terrafirma. that's the best kind of shudder!Sure, that kind of shudder is ok, but only if you're not getting the best kind.... ....but then the Mrs can get funny about tyre-tracks on the bedsheets. Edited October 30, 2012 by Joe Low Link to comment Share on other sites More sharing options...
JohnnyReggae Posted October 30, 2012 Share Yo Johnny, welcome to the world of two wheels To take care of that caliper body sliding when fastening the bolts turn each one a quarter turn at a time to spread the loading and this usually helps when you get to the real "torquing down those mothers" to make sure they are well fastened. Keep an eye on it as usually the leading bolt is the culprit ... get this one fastened a bit first and then the other ... alternate and ride your bike that has two wheels, gears, suspension, handle bars, brakes and free hub .... this is all a new experience for you It is a new experience or rather a renew of an old experience, but it has been at least 6 or 7 years since I was last on a bike and even then it wasn't much. I've probably done more riding in the last week commuting to work than I have in the previous 10 years on a bike. My unicycle is some much simpler to deal with, although I've just put a disk brake onto my mountain uni and have to contend with some alignment issues now. I'll redo my handy work from earlier using your tweaked method when tightening, and see how it goes later. Link to comment Share on other sites More sharing options...
Witkop Posted October 30, 2012 Share don't brake. Problem fixed lerouc 1 Link to comment Share on other sites More sharing options...
patches Posted October 30, 2012 Share Rubbish man even on my Tektros that doesn't happen when I do that Lies! Lies! We know you don't brake... you just rail them corners at full speed! Link to comment Share on other sites More sharing options...
JohnnyReggae Posted October 30, 2012 Share Yip, that usually happens - the movement when tiightening it. Like Hairy said, tighten them a bit at a time, not one all the way and then the other. This is also a reason why I allign them with the eye and not always the brake 'grabbing' way...play with it, it is worth it.Another option to try, thanks ... Maybe some more experience riding on a bike and I'll get the hang of it Link to comment Share on other sites More sharing options...
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