cant_ride Posted November 2, 2010 Report Share Posted November 2, 2010 (edited) Hola, Finally raised the cash to buy a set of brakes and then after looking for my brake lugs for over an hour (for some reason wrapped up in my sock drawer?) started to fit. Front.. perfect! Rear.. complete mess. Now, I don't actually believe there is any way to solve this problem without buying a thinner rim / wider frame but you guys might have some crackin' tricks. Mt frame (Marino Inspired geo 24") is quite skinny at the lugs and I have Onza Ronnie rims. My Avid SD5 is wide as balls as a result and I just can't get the pad angle right for hitting flat on the rim. I've attached a pic to help you get the jist. Really p**sed off after waiting so long - might as well have stayed brakeless! Cheers Oli As promised.. side on(ish) pics of the problem. I have absolutely no decent light in my house past sundown so excuse if you can't quite see what you were looking for. And Adam, mount spacing looks to be 80mm +/- across centres. Edited November 3, 2010 by cant_ride Quote Link to comment Share on other sites More sharing options...
WIGAN ?? Posted November 2, 2010 Report Share Posted November 2, 2010 (edited) Short of a new rim I can't think of anything :/ imeen ronnies arnt even THAT wide to be honest, what's the angle if the pad like when you just run it flat to the arm no spacers ?? If it's anything close to right maybe just drag the brake round heavily till it beds in square, not exactly ideal but it may work Edited November 2, 2010 by WIGAN ?? Quote Link to comment Share on other sites More sharing options...
cant_ride Posted November 2, 2010 Author Report Share Posted November 2, 2010 Yeah that's about the extent of my ideas so far too! They're all good compromises but nothing I'd trust to save my life heading vertically downward towards a razor sharp rail. Keep them coming! Oli Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted November 2, 2010 Report Share Posted November 2, 2010 If that's with the fewest/smallest spacers in place on the pads then there's not a huge amount you can do really. A thinner rim would help, or if it reeeeelly comes to it then you could move the mounts on the frame but that's just effort! What's the spacing of the brake mounts on the frame? Quote Link to comment Share on other sites More sharing options...
cant_ride Posted November 2, 2010 Author Report Share Posted November 2, 2010 (edited) If that's with the fewest/smallest spacers in place on the pads then there's not a huge amount you can do really. A thinner rim would help, or if it reeeeelly comes to it then you could move the mounts on the frame but that's just effort! What's the spacing of the brake mounts on the frame? Well so far that's 'set up as it should be'. If I run it flat to the arm (non of the pivoting cup and ball spacers just a washer to deal with vibration) it's perfect on the pads vertical angle but then hits on a slant lengthways. I'm thinking there might be a way to solve that and hopefully without risking bending pad mounts or brake arms etc. I'll try again after work tomorrow, in the meantime any more ideas would be appreciated. Cheers! Oli Edited November 2, 2010 by cant_ride Quote Link to comment Share on other sites More sharing options...
Phatmike Posted November 2, 2010 Report Share Posted November 2, 2010 What pads have you got in there Oli? Could you grab a pic slightly more side-on? Quote Link to comment Share on other sites More sharing options...
Matt Vandart Posted November 3, 2010 Report Share Posted November 3, 2010 Agreed. I had this exact same problem with my Zebdi, get a side pic and I'll tell you what I did. Quote Link to comment Share on other sites More sharing options...
Ali C Posted November 3, 2010 Report Share Posted November 3, 2010 Mike's right, you could get some thinner pads like TNN LGVs, they have thin backings with a built in conical washer so the whole system can be a few mil less wide. You could also try some thinner arms like Shimano LX or XT arms. Quote Link to comment Share on other sites More sharing options...
cant_ride Posted November 3, 2010 Author Report Share Posted November 3, 2010 (edited) Mike's right, you could get some thinner pads like TNN LGVs, they have thin backings with a built in conical washer so the whole system can be a few mil less wide. You could also try some thinner arms like Shimano LX or XT arms. Thanks Ali all considered but trying my hardest to conjour up a solution that doesn't involve money first. I'll get pics up after work for those that have ideas! Ta Oli Ps they're just the standard blacks. I don't have the cash to blow on fancy pads just yet anyways I've always used standard pads and they never let me down! Until now of course. Edited November 3, 2010 by cant_ride Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted November 3, 2010 Report Share Posted November 3, 2010 Sounds like a plan - have a quick measure of your brake mount spacing too Quote Link to comment Share on other sites More sharing options...
cant_ride Posted November 3, 2010 Author Report Share Posted November 3, 2010 Update ^^^^^^^ cheers Oli Quote Link to comment Share on other sites More sharing options...
Ali C Posted November 3, 2010 Report Share Posted November 3, 2010 unfortunately there isn't a lot I can think of doing without spending money. I am confident some thinner arms and pads would solve it and work very well. Quote Link to comment Share on other sites More sharing options...
trials owns Posted November 3, 2010 Report Share Posted November 3, 2010 (edited) just a idea, wouldn't sanding the pads alot help at anything? Edited November 3, 2010 by trials owns Quote Link to comment Share on other sites More sharing options...
cant_ride Posted November 3, 2010 Author Report Share Posted November 3, 2010 unfortunately there isn't a lot I can think of doing without spending money. I am confident some thinner arms and pads would solve it and work very well. Yeah that's still all I can think of too. I'd honestly rather scrap (take off and save for another time/bike) the lot and stay brakeless rather than buy more brakes. Cheap b*****d I know! just a idea, wouldn't sanding the pads alot help at anything? I'm sure it would but that basically counts as 'spending money' as I'd be losing both longevity and functionality of the brand new pads without even riding them. Quote Link to comment Share on other sites More sharing options...
Azarathal Posted November 3, 2010 Report Share Posted November 3, 2010 Try only using those two thin washers for the inside of the caliper? Quote Link to comment Share on other sites More sharing options...
manuel Posted November 3, 2010 Report Share Posted November 3, 2010 to me it looks like the mounts are just too high ? almost like its a 26" mounted frame with 24" wheels in ? Quote Link to comment Share on other sites More sharing options...
cant_ride Posted November 3, 2010 Author Report Share Posted November 3, 2010 to me it looks like the mounts are just too high ? almost like its a 26" mounted frame with 24" wheels in ? The mounts are bang on it's literally the width of the rim coupled with the skinny frame that's busting the brake arms out like that. I got frustrated with it, wrenched the arms out to force the slack end of the pad against the frame. It seems to have bent something to exactly the right angle. Still a bit spongy but nothing unbearable, and really flippin' powerful. It'll do for now even though it makes me feel dirty. Oli Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted November 3, 2010 Report Share Posted November 3, 2010 80mm brake spacing is probably what's causing the main problems - may require a thinner rim if playing with pads and spacers doesn't give results. Ideally you'd want to move them at least 10mm or so further out which would give room for pads and a wider rim, though then you start to edge towards crank/brake arm issues too Quote Link to comment Share on other sites More sharing options...
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