Adrian Posted February 22, 2009 Report Share Posted February 22, 2009 right guys, iv got a 203mm bb7 set up on echo urbans which have just cracked...so iv now got echo sl forks on the way, and the mount is +20... so basically my calliper is going to be sitting higher then the rotor...on the hope brakes the callipers are made to rotor size but on the bb7's theres another part that joins the calliper to the forks.. and i was wondering if that bit is different sizes depending on the disk size or the actual calliper is different for each disk size?so basically do i need a new calliper or a different size adaptor bit?thanks for the help, i need this sorted before the london ride Quote Link to comment Share on other sites More sharing options...
N.Wood Posted February 22, 2009 Report Share Posted February 22, 2009 Different adaptor, probably one designed for a 180mm rotor then add a spacer or 2 to get it to sit the extra 1.5mm away from the hub. Quote Link to comment Share on other sites More sharing options...
Adrian Posted February 22, 2009 Author Report Share Posted February 22, 2009 Different adaptor, probably one designed for a 180mm rotor then add a spacer or 2 to get it to sit the extra 1.5mm away from the hub.sweet ok, one other thing... echo urbans arnt 20+ aswell right? they 07's Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted February 22, 2009 Report Share Posted February 22, 2009 sweet ok, one other thing... echo urbans arnt 20+ aswell right? they 07'snope, urbans are +0 ( designed for a 160mm rotor ) compared to the +20 sls ( designed to take a 180 rotor ) Quote Link to comment Share on other sites More sharing options...
Adrian Posted February 22, 2009 Author Report Share Posted February 22, 2009 nope, urbans are +0 ( designed for a 160mm rotor ) compared to the +20 sls ( designed to take a 180 rotor )anyone know where i can get a 180mm adaptor bit from? cant see them on tarty Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted February 22, 2009 Report Share Posted February 22, 2009 http://www.chainreactioncycles.com/Models....p;ModelID=21540 Quote Link to comment Share on other sites More sharing options...
Revolver Posted February 22, 2009 Report Share Posted February 22, 2009 That's the wrong one?CRC have none of them in stock, which is shit.My bb7 is a 180 one, but I put it on my echo forks and it sat too far out. SO, what I did was, take some of the washers out, which brought the caliper in. I've got only one of the washers in at the moment, on each bolt, so it sits just nicely there. Try it? Quote Link to comment Share on other sites More sharing options...
sstein Posted February 23, 2009 Report Share Posted February 23, 2009 That's the wrong one?CRC have none of them in stock, which is shit.My bb7 is a 180 one, but I put it on my echo forks and it sat too far out. SO, what I did was, take some of the washers out, which brought the caliper in. I've got only one of the washers in at the moment, on each bolt, so it sits just nicely there. Try it?I use a shimano one, trust me you can use any make, they work fine, the magura one will work. Quote Link to comment Share on other sites More sharing options...
Jamie_Neal Posted February 23, 2009 Report Share Posted February 23, 2009 http://www.chainreactioncycles.com/Models....p;ModelID=21540Looks like it should work but they do do Avid ones - http://www.chainreactioncycles.com/Models.aspx?ModelID=13721 Quote Link to comment Share on other sites More sharing options...
sstein Posted February 23, 2009 Report Share Posted February 23, 2009 Looks like it should work but they do do Avid ones - http://www.chainreactioncycles.com/Models.aspx?ModelID=13721That avid one will not work as it is 185, so you will end up with it being 185+20+3(roughly size of spacers)=208mm rather than 203, which means you will get minimal pad contact, you need a 180mm adaptor as it will work perfectly, the shimano one of the magura one will end up perfect as it will be 180+20+3=203. Quote Link to comment Share on other sites More sharing options...
wally Posted February 23, 2009 Report Share Posted February 23, 2009 Mate if you broke urbans i wouldnt get Echo sl forks. I have them and they seem flexy as hell. You can also rest your front wheel on a rock and turn the bars and see the fork legs twist hehe. Quote Link to comment Share on other sites More sharing options...
N.Wood Posted February 23, 2009 Report Share Posted February 23, 2009 That avid one will not work as it is 185, so you will end up with it being 185+20+3(roughly size of spacers)=208mm rather than 203, which means you will get minimal pad contact, you need a 180mm adaptor as it will work perfectly, the shimano one of the magura one will end up perfect as it will be 180+20+3=203.It does work, I ran it on pretty much the same set up (trialtech forks) and you just take out a couple of spacers to move the caliper in slightly. Quote Link to comment Share on other sites More sharing options...
sstein Posted February 23, 2009 Report Share Posted February 23, 2009 What I am saying is that there should be no need to remove any spacers Quote Link to comment Share on other sites More sharing options...
Adrian Posted February 23, 2009 Author Report Share Posted February 23, 2009 Mate if you broke urbans i wouldnt get Echo sl forks. I have them and they seem flexy as hell. You can also rest your front wheel on a rock and turn the bars and see the fork legs twist hehe.blah, only need them to last the london ride xD Quote Link to comment Share on other sites More sharing options...
N.Wood Posted February 24, 2009 Report Share Posted February 24, 2009 What I am saying is that there should be no need to remove any spacersWell you said it wouldn't work, which is wrong.But ok, if you can get hold of a 180mm thats fine, keep spacers in. If you get hold of 185, remove some spacers, thats fine.The spacers don't have any other function other than to space things out; if it doesn't need spacing, you don't have to use them. Quote Link to comment Share on other sites More sharing options...
sstein Posted February 24, 2009 Report Share Posted February 24, 2009 Sorry I get what you were saying now! Just so you know the spacers are part of avids tri-alighn system, they are not for spacing, but rather for alighning the caliper so when the pads touch they are flat. Other systems such as tektro, etc... use a slightly different systemm where the pads themselves can rotate slightly which alighns them, so the actual caliper is easier to alighn and do not need the spacers. Quote Link to comment Share on other sites More sharing options...
N.Wood Posted February 24, 2009 Report Share Posted February 24, 2009 Yeah I'm well aware of how Avids work, but if your disk tabs are flush and parallel to the dropout and therefore the hub, you could use no spacers (or 'adjusting shims') and the pads would hit flat. Just like running an ISO mount.Either way, its entirely possible to run Avids without any adjusting shims/spacers in there at all. To fit a 203 rotor into a brake with a 185 adaptor and a +20 mount, you don't need to remove all the spacers anyway, so theres no problem at all. I ran this set up for 6 months with no problems. Quote Link to comment Share on other sites More sharing options...
sstein Posted February 24, 2009 Report Share Posted February 24, 2009 Yeah I'm well aware of how Avids work, but if your disk tabs are flush and parallel to the dropout and therefore the hub, you could use no spacers (or 'adjusting shims') and the pads would hit flat. Just like running an ISO mount.Either way, its entirely possible to run Avids without any adjusting shims/spacers in there at all. To fit a 203 rotor into a brake with a 185 adaptor and a +20 mount, you don't need to remove all the spacers anyway, so theres no problem at all. I ran this set up for 6 months with no problems.Not saying that it is not possible, just sometimes it could be a bit harder! Quote Link to comment Share on other sites More sharing options...
N.Wood Posted February 24, 2009 Report Share Posted February 24, 2009 I guess if your disk tabs are on the piss it wouldn't be all that great, but you can get away with just the one pair of conical washers, making any adjustment neccesary an easy job Quote Link to comment Share on other sites More sharing options...
Revolver Posted February 24, 2009 Report Share Posted February 24, 2009 That mount is +20 bigger than it is necessary. Here, you can see that removing some of the washers removes the need to buy the 160, or in your case 180, mount.Just a note, though. On this, the pad (you can just see it there) catches on the mount. I put those particular washers in, and there is just enough space for it to work. Still, it rubs like shit Quote Link to comment Share on other sites More sharing options...
JonMack Posted February 24, 2009 Report Share Posted February 24, 2009 Sorry I get what you were saying now! Just so you know the spacers are part of avids tri-alighn system, they are not for spacing, but rather for alighning the caliper so when the pads touch they are flat. Other systems such as tektro, etc... use a slightly different systemm where the pads themselves can rotate slightly which alighns them, so the actual caliper is easier to alighn and do not need the spacers.Don't mean to be an arse, but it's spelt align. Quote Link to comment Share on other sites More sharing options...
sstein Posted February 24, 2009 Report Share Posted February 24, 2009 Don't mean to be an arse, but it's spelt align.whatever Quote Link to comment Share on other sites More sharing options...
ogre Posted February 24, 2009 Report Share Posted February 24, 2009 do you really need a 203 on the front i'm a tank and 185 is moar than enough for me. means my forks don't get munched as fast either Quote Link to comment Share on other sites More sharing options...
Adrian Posted February 24, 2009 Author Report Share Posted February 24, 2009 do you really need a 203 on the front i'm a tank and 185 is moar than enough for me. means my forks don't get munched as fast either well, why would a brake that doesnt perform as well? id rather rape forks then make certain moves impossible like far gaps to front on rails and things... i like my brake to stop as soon as i pull it and nothing less Quote Link to comment Share on other sites More sharing options...
sstein Posted February 24, 2009 Report Share Posted February 24, 2009 well, why would a brake that doesnt perform as well? id rather rape forks then make certain moves impossible like far gaps to front on rails and things... i like my brake to stop as soon as i pull it and nothing less You should be using a vee then! Quote Link to comment Share on other sites More sharing options...
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