Brake/Fork Chatter... lube the rim? - Cyclocross Magazine2024-03-28T12:29:45Zhttps://cowbell.cxmagazine.com/forum/topics/brakefork-chatter-lube-the-rim?commentId=1198434%3AComment%3A47011&feed=yes&xn_auth=no I solved this problem recent…tag:cowbell.cxmagazine.com,2018-08-06:1198434:Comment:1807762018-08-06T07:31:45.301ZGhttps://cowbell.cxmagazine.com/profile/G
<p> I solved this problem recently. Maybe someone other than me is still running canits. I have a 61 cm frame, and an all carbon fork. Very deep from front to back, very stiff looking fork, on a Bianchi cross - specific bike. Replaced the Kool - Stop v-brake pads that came with the bike, reasonable stopping distance down from 90+ to 45'. Some squeal, but I'm mostly recreational riding with my wife or alone I tend to use planning, awareness and line-picking to save my a** because I know the…</p>
<p> I solved this problem recently. Maybe someone other than me is still running canits. I have a 61 cm frame, and an all carbon fork. Very deep from front to back, very stiff looking fork, on a Bianchi cross - specific bike. Replaced the Kool - Stop v-brake pads that came with the bike, reasonable stopping distance down from 90+ to 45'. Some squeal, but I'm mostly recreational riding with my wife or alone I tend to use planning, awareness and line-picking to save my a** because I know the brakes won't. Then I start CX boot camp class. Start-stop drills, slamming on the brakes from all-out bring out the Irish bainshee wail hidden in my Italian bike... I see the fork judder literally bringing the hub behind the line of the top tube. My stops are around 30' since I don't dare hit that front brake any harder for fear of shearing off the fork. I think, I sketch. I research. </p>
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<p><a href="https://www.velonews.com/2010/09/news/cyclocross/technical-qa-with-lennard-zinn-return-to-cross_101807" target="_blank">https://www.velonews.com/2010/09/news/cyclocross/technical-qa-with-lennard-zinn-return-to-cross_101807</a></p>
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<p>Zinn confirms my thoughts: The brake stops the wheel, the tread grips the ground, the frame/rider keep hurtling </p>
<p>forward. The fork bends, and on an all carbon fork, even bends where the fork crown meets the steerer... this in turn stretches the cable, clamping the brake more tightly on the rim. Judder happens because the front tire tears away a little grass, releasing the tension in the system, which is reapplied when the tread bites in again and/ or the forces on the wheel overcome the pressure of pads on rim and slippage occurs, which are reapplied because I still have a death grip on the lever. </p>
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<p>Solution 1) Get a v-brake. Ok, fine but Paul said their Mini-V with my Campy Ergo would require a very true rim, and I'd have to set the pads very close to get it to work. Not ideal for cross...</p>
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<p>Solution 2) shorten that darn stretched cable. I find there is such a thing as a "fork mounted brake hanger". I buy one from the LBS. As I am doing all this, I realize that the incredibly clever squeegee tip built into the rear edge of my incredibly grippy brake pads is adding to the problem by eliminating at least some of my toe-in, and allowing "catch and release" of my rim. So...</p>
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<p>Solution 3) I reverse my Kool-Stop v-brake pads to put the squeegee on the trailing edge of the pad, resulting in <em>automatic toe-in</em>. I will reverse the pads when the rains come home to Seattle.</p>
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<p>I tested the bike on level grass, from near golf-course smoothness to bouncy-like-Pachinko crabgrass. From a roliing start full tilt sprint of 150', slamming on the brakes resulted in No squeal, No judder, and Stop in 15'. </p>
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<p>If you have cantis and carbon forks, <em>go get a fork mounted brake hanger. </em>I swear on the Constitution, I have never seen </p>
<p>a single $15 part make so much difference in the performance of a bike. </p>
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<p>BTW - why did I leave those really long, arced v-brake pads on the bike? Well, I thought more surface friction = faster stopping = a good idea for a 200+ pound rider. Kind of like having a disc brake on the front. </p> Update 2.0! Just added trp eu…tag:cowbell.cxmagazine.com,2010-03-17:1198434:Comment:534462010-03-17T22:20:06.084ZJesseDhttps://cowbell.cxmagazine.com/profile/JesseDelDonno
Update 2.0! Just added trp eurox's to my bike. Wow what a difference set up with a high straddle cable with just a tiny, but accepable, amount of chatter. I love these brakes!
Update 2.0! Just added trp eurox's to my bike. Wow what a difference set up with a high straddle cable with just a tiny, but accepable, amount of chatter. I love these brakes! we've been trying that too -…tag:cowbell.cxmagazine.com,2009-12-19:1198434:Comment:492262009-12-19T04:29:30.902ZCyclocross Magazinehttps://cowbell.cxmagazine.com/profile/cxm
we've been trying that too - it does work...tektro, trp and frm make mini v-brakes. we predict they'll make a come back. they don't quite have the power of a well set-up low profile v-brake but are easy to adjust for sure, and effective in dry climates.
we've been trying that too - it does work...tektro, trp and frm make mini v-brakes. we predict they'll make a come back. they don't quite have the power of a well set-up low profile v-brake but are easy to adjust for sure, and effective in dry climates. Zinn mentioned in a recent co…tag:cowbell.cxmagazine.com,2009-12-19:1198434:Comment:492252009-12-19T03:41:34.576ZDylan McReynoldshttps://cowbell.cxmagazine.com/profile/DylanMcReynolds
Zinn mentioned in a recent column the thought of switching to a short V brake. Since the pull of the wheel doesn't tight the brake, there's no chatter. I did a little research, and could find only one maker of short learn pull brakes. Looks like for about $10 you can test the theory. Google "linear pull short brake"
Zinn mentioned in a recent column the thought of switching to a short V brake. Since the pull of the wheel doesn't tight the brake, there's no chatter. I did a little research, and could find only one maker of short learn pull brakes. Looks like for about $10 you can test the theory. Google "linear pull short brake" thanks for posting jesse. lot…tag:cowbell.cxmagazine.com,2009-12-18:1198434:Comment:492192009-12-18T18:32:54.126ZCyclocross Magazinehttps://cowbell.cxmagazine.com/profile/cxm
thanks for posting jesse. lots more on this in issue 8!
thanks for posting jesse. lots more on this in issue 8! UPDATE just got back fro a sh…tag:cowbell.cxmagazine.com,2009-12-18:1198434:Comment:492082009-12-18T03:32:48.662ZJesseDhttps://cowbell.cxmagazine.com/profile/JesseDelDonno
UPDATE just got back fro a short ride down a big hill...no fork chatter. Mind you, I'm no light weight so it takes me some time stopping, but with this setup I am very satisfied.
UPDATE just got back fro a short ride down a big hill...no fork chatter. Mind you, I'm no light weight so it takes me some time stopping, but with this setup I am very satisfied. I switched to a steer tube mo…tag:cowbell.cxmagazine.com,2009-12-17:1198434:Comment:491662009-12-17T03:03:40.544ZJesseDhttps://cowbell.cxmagazine.com/profile/JesseDelDonno
I switched to a steer tube mounted hanger and, yes, brake chatter was much worse on my stock cro-mo Redline fork than a fork mounted hanger, both presented chatter. But after looking at some of my pics of nat's I noticed some riders running a way high straddle hanger i.e. Molly Cameron, Jon Baker. So I decided to mix it up a bit. Low profile brakes (avid shorty 4's) steer tube cable hanger, high straddle cradle and toe in on my brake pads, not too extreme but enough. In my short term, tests…
I switched to a steer tube mounted hanger and, yes, brake chatter was much worse on my stock cro-mo Redline fork than a fork mounted hanger, both presented chatter. But after looking at some of my pics of nat's I noticed some riders running a way high straddle hanger i.e. Molly Cameron, Jon Baker. So I decided to mix it up a bit. Low profile brakes (avid shorty 4's) steer tube cable hanger, high straddle cradle and toe in on my brake pads, not too extreme but enough. In my short term, tests under hard braking this pretty much eliminated fork chatter My brakes still squeal a bit but watch any video of the national champs races and you will hear brake squeal. However as Andrew had mentioned I did lose some braking power in the front, only time will tell if this is a reasonable way to eliminate fork chatter, I am satisfied with the result though.<p style="text-align: left;"><img src="http://storage.ning.com/topology/rest/1.0/file/get/2163861555?profile=original" alt=""/></p> I too used to have brake chat…tag:cowbell.cxmagazine.com,2009-12-16:1198434:Comment:491332009-12-16T21:06:03.259ZSteve Kirkhttps://cowbell.cxmagazine.com/profile/SteveKirk
I too used to have brake chatter with Tektro Oryx brakes. Last season I changed to Empella Froglegg brakes, and run the front straddle relatively high. This definitely reduced the chatter compared to the Oryx brakes.<br />
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I don't feel I have any issues with the setup and I don't feel I'd be better with more powerful brakes. I've tried Koolstop dual compound pads and I was a bit disappointed. I quite like Swissstop Canti Rat black brake blocks, but I destroy them at an alarming rate in the mud (see…
I too used to have brake chatter with Tektro Oryx brakes. Last season I changed to Empella Froglegg brakes, and run the front straddle relatively high. This definitely reduced the chatter compared to the Oryx brakes.<br />
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I don't feel I have any issues with the setup and I don't feel I'd be better with more powerful brakes. I've tried Koolstop dual compound pads and I was a bit disappointed. I quite like Swissstop Canti Rat black brake blocks, but I destroy them at an alarming rate in the mud (see my other recent post!). Only my second season so not that expierienced, but pretty happy with my brake setup this season.<br />
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Cheers,<br />
Steve Had enough chatter on my Gian…tag:cowbell.cxmagazine.com,2009-12-15:1198434:Comment:488532009-12-15T05:53:48.722ZIan Parkerhttps://cowbell.cxmagazine.com/profile/IanParker
Had enough chatter on my Giant TCX to scare the heck out of me.<br />
Installed the little brake cable "Problem Solver" from Jenson USA and a set of old mountain bike Vee brakes......WOW.<br />
No chatter and awesome stopping power. Nice firm feel as well. Do I want to go back.....not likely.
Had enough chatter on my Giant TCX to scare the heck out of me.<br />
Installed the little brake cable "Problem Solver" from Jenson USA and a set of old mountain bike Vee brakes......WOW.<br />
No chatter and awesome stopping power. Nice firm feel as well. Do I want to go back.....not likely. Here is some info about this…tag:cowbell.cxmagazine.com,2009-12-13:1198434:Comment:480762009-12-13T23:26:10.494ZGregory Rousehttps://cowbell.cxmagazine.com/profile/GregoryRouse
Here is some info about this issue....<br />
<a href="http://velonews.com/article/100303/technical-qa-with-lennard-zinn---brake-chatter-in--cross" target="_blank">http://velonews.com/article/100303/technical-qa-with-lennard-zinn---brake-chatter-in--cross</a>
Here is some info about this issue....<br />
<a href="http://velonews.com/article/100303/technical-qa-with-lennard-zinn---brake-chatter-in--cross" target="_blank">http://velonews.com/article/100303/technical-qa-with-lennard-zinn---brake-chatter-in--cross</a>