http://citycyclingedinburgh.info/bbpress/ CityCyclingEdinburgh Forum » Topic: V-No-Brakes en Wed, 13 May 2026 02:45:33 +0000 http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-26126 Tue, 08 Mar 2011 02:31:54 +0000 chdot 26126@http://citycyclingedinburgh.info/bbpress/ <p>"I only heard about him last year"</p> <p><a href="http://cyclingedinburgh.info/2008/02/04/sheldon-brown-1944-2008" rel="nofollow">http://cyclingedinburgh.info/2008/02/04/sheldon-brown-1944-2008</a></p> <p>"<br /> May 1 , 2010</p> <p><a href="http://sheldonbrown.com/new-scb.html">Continuing work on the site</a></p> <p>Harriet is fixing broken links in hundreds of files, and posting Google ads. John is working his way through the Glossary, updating information.</p> <p>" </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-26123 Tue, 08 Mar 2011 00:58:17 +0000 kaputnik 26123@http://citycyclingedinburgh.info/bbpress/ <p>+10 awesomepower points </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-26121 Tue, 08 Mar 2011 00:43:27 +0000 wingpig 26121@http://citycyclingedinburgh.info/bbpress/ <p>I only heard about him last year. Sheffield racks at work and I don't use wheel twisters if anywhere offers them. I've never had a Schwalbe on this rim so it wouldn't have been caused by the force exerted on the rim edge by the tyre lever when dismounting a tyre. I assume the braking (more specifically the evil black abrasive compound, now replaced by nice soft KoolStop pink) weakened the rim enough to let 120 psi, a high proportion of the total weight carried and conceivably the odd compressing blow from bumps and potholes bend the weakened and thinned rim. It's quite even all the way round. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-26120 Tue, 08 Mar 2011 00:27:54 +0000 kaputnik 26120@http://citycyclingedinburgh.info/bbpress/ <p>Should have listened to Uncle Sheldon when he told you not to use the back brake! Are you sure you managed to bend the rim through brake force alone? Maybe some chump knocked your bike over or bashed into it at work? That's why I never use the stupid wheelbender bikeracks we have, but just prop it up on a pedal and use the lock to tether it. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-26116 Tue, 08 Mar 2011 00:02:15 +0000 wingpig 26116@http://citycyclingedinburgh.info/bbpress/ <p>Whoa. What I thought was rim-concavity from brake-gouging-wear is actually the entire outer edge of one side of the rim having been bent outwards by the tyre and tube. That would explain the difficulty I had getting my brakes to sit nicely. It doesn't explain why it's not yet popped off with a bang.<br /> <a href="http://www.flickr.com/photos/wingpig/5507712658/"><img src="http://farm6.static.flickr.com/5297/5507712658_63981364af.jpg"></a><br /> <a href="http://www.flickr.com/photos/wingpig/5507712658/">IMAG0375</a> by <a href="http://www.flickr.com/people/wingpig/">wingpig</a>, on Flickr<br /> I shall be walking to work in the morning, and to a shop at lunchtime. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-25984 Sat, 05 Mar 2011 23:36:36 +0000 wingpig 25984@http://citycyclingedinburgh.info/bbpress/ <p><blockquote><em>"Concave rims aren't good, right?"</em></blockquote><br /> <a href="http://www.flickr.com/photos/wingpig/5500186809/"><img src="http://farm6.static.flickr.com/5177/5500186809_b71348c36d.jpg"></a><br /> <a href="http://www.flickr.com/photos/wingpig/5500186809/">IMAG0363</a> by <a href="http://www.flickr.com/people/wingpig/">wingpig</a>, on Flickr<br /> Worse on the right. The left is merely slightly concave, which just highlights how deeply this side has been carved. The greater pad-rim contact area meant great locking-power, though with almost zero modulation-ability. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24106 Tue, 15 Feb 2011 15:21:28 +0000 wee folding bike 24106@http://citycyclingedinburgh.info/bbpress/ <p>You can also go halfway to paradise and crossover the new rim onto the hub.</p> <p>I tape the two rims together and then work round it moving spokes across. Make sure you put the valve hole in the right place. I don't have problems with reusing spokes.</p> <p>An afternoon shooting the breeze in Alistair's back shop is one of life's little joys and well worth the trip. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24104 Tue, 15 Feb 2011 15:14:00 +0000 steveo 24104@http://citycyclingedinburgh.info/bbpress/ <p><em>??</em><br /> Typo fixed now... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24101 Tue, 15 Feb 2011 14:43:12 +0000 chdot 24101@http://citycyclingedinburgh.info/bbpress/ <p>"shouldn't followed the link i assumed it would be"</p> <p>??</p> <p>Probably should have made the text a link. </p> <p>Spam filter hardly caught anything it shouldn't for a while - must be learning...</p> <p>(Fate tempted) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24099 Tue, 15 Feb 2011 14:37:25 +0000 steveo 24099@http://citycyclingedinburgh.info/bbpress/ <p>Ahhh my mistake, <strike>shouldn't</strike> should have followed the link i assumed it would be the one to the list of edinburgh bike shops... Opps </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24094 Tue, 15 Feb 2011 14:16:38 +0000 chdot 24094@http://citycyclingedinburgh.info/bbpress/ <p>"i think we've got a spam bot issue again, i can't see the post from (presumably) stepdoh that has this quote"</p> <p>Actually Min.</p> <p>It's just a link to a previous post, should be visible to all </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24093 Tue, 15 Feb 2011 14:14:41 +0000 Stepdoh 24093@http://citycyclingedinburgh.info/bbpress/ <p>yep, I think I can almost see the rim tape through mine :*) Thought wheel building looked like a fairly arduous task actually looks fairly good 'fun' in a meditative way. </p> <p>Think this may be a job for the professionals :) although don't think I need to be as 'bespoke' pun intended as Alistair Gow :) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24092 Tue, 15 Feb 2011 14:12:17 +0000 steveo 24092@http://citycyclingedinburgh.info/bbpress/ <p>Chdot i think we've got a spam bot issue again, i can't see the post from (presumably) stepdoh that has this quote<br /> "Where does one go to get wheels built in Edinburgh? Please don't say Alistair Gow, it needs to be someone I can get to. ;-)" </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24090 Tue, 15 Feb 2011 14:08:07 +0000 chdot 24090@http://citycyclingedinburgh.info/bbpress/ <p>"Where does one go to get wheels built in Edinburgh? Please don't say Alistair Gow, it needs to be someone I can get to. ;-)"</p> <p><a href="http://citycyclingedinburgh.info/bbpress/topic.php?id=234" rel="nofollow">http://citycyclingedinburgh.info/bbpress/topic.php?id=234</a> </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24089 Tue, 15 Feb 2011 14:06:17 +0000 chdot 24089@http://citycyclingedinburgh.info/bbpress/ <p>"Was thinking of giving the spring arm an extra bend unless anyone has a better idea? I tried setting the spring to a different hole but no dice."</p> <p>Whatever works! </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24088 Tue, 15 Feb 2011 14:05:23 +0000 chdot 24088@http://citycyclingedinburgh.info/bbpress/ <p>"How easy is this finding-a-similar-rim thing? "</p> <p>Well..</p> <p>To some extent it depends on what shops have in stock. </p> <p>There are all sorts of <a href="http://www.google.co.uk/search?rls=en&amp;q=spoke+length+calculator">spoke length calculators on the web</a> some have databases of many hubs and rims.</p> <p>There is some degree of flexibility, in practice, about spoke length - not too long so that spokes puncture tubes (small amount protruding can be filed off - seldom an issue with "double walled" rims) or too short so that not enough threads are held by the nipples.</p> <p>Generally if you swap from an 'ordinary' rim to a deep section one, you'll need new spokes. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24087 Tue, 15 Feb 2011 13:56:21 +0000 wee folding bike 24087@http://citycyclingedinburgh.info/bbpress/ <p>Dead easy. Go see Alistair Gow.</p> <p>Other wheel builders are available.</p> <p>Some rims have wear indicators. These are grooves in the side. When the rest of the rim wears down to the groove then it's time for a new rim. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24086 Tue, 15 Feb 2011 13:54:09 +0000 ruggtomcat 24086@http://citycyclingedinburgh.info/bbpress/ <p>I been having probs myself, after a wash and a fettle one brake doesn't have quite the same tension as the other and is rubbing the rim. Ive played with the tensions adjustment screws, but there is still a (barely) perceptible rub. Was thinking of giving the spring arm an extra bend unless anyone has a better idea? I tried setting the spring to a different hole but no dice. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24084 Tue, 15 Feb 2011 13:50:41 +0000 wingpig 24084@http://citycyclingedinburgh.info/bbpress/ <p>It recently took a bloke in a shop ten minutes (good value, for the 80p cost) to find the right length of spoke to sell me to replace the one which had snapped. How easy is this finding-a-similar-rim thing? Presumably there are standards for spoke-fixing-circle-diameter? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24083 Tue, 15 Feb 2011 13:43:49 +0000 chdot 24083@http://citycyclingedinburgh.info/bbpress/ <p>"Concave rims aren't good, right?"</p> <p>If you get a similar new rim - so that the spoke length is the same - it's fairly straightforward to put on a new rim.</p> <p>Slightly more 'fun' to true it nicely.</p> <p>Worth it for sense of satisfaction and small saving of cash (if you don't value your time too highly...)</p> <p>(Assuming hub + spokes are still in good condition.) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24082 Tue, 15 Feb 2011 13:39:38 +0000 Stepdoh 24082@http://citycyclingedinburgh.info/bbpress/ <p>that's a good point. Seem to be in working order (and the Screech has stopped). Sadly I've just noticed that I may need a new back wheel. Concave rims aren't good, right? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24075 Tue, 15 Feb 2011 13:16:21 +0000 Smudge 24075@http://citycyclingedinburgh.info/bbpress/ <p>"Sorry I know I should be getting them serviced professionally"</p> <p>Nope, who do you trust to set your brakes? You, the person who will need them to stop you before the bus/car/pothole/shark infested custard? Or a (possibly underpaid) mechanic who is on peice work and may never see them again...?</p> <p>Obviously that is a generalisation and we are fortunate round here in having quite a few more than reputable shops/mechanics who will undoubtedly do a good and worthwhile job, but with no offence to the shops/mechanics (some of whom I know personally) brakes is brakes and personallyI like to have done them myself ;-) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24074 Tue, 15 Feb 2011 13:09:48 +0000 Stepdoh 24074@http://citycyclingedinburgh.info/bbpress/ <p>Thanks for the advice folks, about to go and have a fettle. Will see how I go. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24073 Tue, 15 Feb 2011 13:07:46 +0000 wee folding bike 24073@http://citycyclingedinburgh.info/bbpress/ <p>Ask the man:</p> <p><a href="http://www.sheldonbrown.com/canti-direct.html" rel="nofollow">http://www.sheldonbrown.com/canti-direct.html</a> </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24072 Tue, 15 Feb 2011 13:06:08 +0000 Arellcat 24072@http://citycyclingedinburgh.info/bbpress/ <p>V-brakes often have the cartridge pad holders now, which prevents the pads from squirming and taking up the carefully set toe-in. But some do have a pointy end, ostensibly for deflecting water from the rim, and that can be used to gauge the toe-in.</p> <p>Normally I'd aim for a 0.5-1.0mm gap at the rearward end of the brake pad, and set the angle so that they contact the rim slightly above square - that is, pointing fractionally upwards towards the tyre, and set the height to have the bottom edge of the brake pad just above the bottom of the braking surface of the rim. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24068 Tue, 15 Feb 2011 13:00:29 +0000 Stepdoh 24068@http://citycyclingedinburgh.info/bbpress/ <p>Sorry I know I should be getting them serviced professionally, but I like to learn how do these kinds of things, and I'm rarely near a bike shop on business hours. :)</p> <p>Is there a golden gap for brakes, or is it all down to your individual setup? </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24061 Tue, 15 Feb 2011 12:39:31 +0000 wee folding bike 24061@http://citycyclingedinburgh.info/bbpress/ <p>Toe in the pads should stop a squeal. </p> <p>I've never had V brakes but you can use a few bits of cardboard as spacers to set other types. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=2276#post-24058 Tue, 15 Feb 2011 12:35:05 +0000 Stepdoh 24058@http://citycyclingedinburgh.info/bbpress/ <p>Can anyone advise on getting V-brakes to work. Putting some new pads on today as the various conditions have melted away my current blocks, but I can just never get the back brakes to work well.</p> <p>Either I have the pads close to the rim and I'm not getting the full pull force as they are coming on quickly, or I have them a bit out and it's not putting enough force on the rim, is there some setting I'm getting wrong :-/</p> <p>Also any tips on squeal-stopping :) </p>