HippY Posted April 29, 2014 Report Share Posted April 29, 2014 Hello guys I have a Trialtech 24 fork ( not sure about the model, its disc only, that is on my bike), some used Hope XC front hub, Trialtech QR, 180mm shimano RT68 disc and a well used Avid juicy 3 So when I pull the brake, the front tyre/rim moving forward and back and rolls a few cm and I hear a clicking noise. I think it should be the pads, as the brake is not really trials specific and its well used, but the disc does not seem to move, or move that small that I cannot see( not sure yet, will test it further) The hub had the history of loose disc, but it should not be the case here, grabbed the tyre and tried to pull the disc by hand, no movement The bolts are tightened on the caliper, the QR is really tight ( although before I tighten it, there is a few mm space there) and the wheel should not move, but I will check it. What could be the problem? the brake will be changed in a week or earlier for sure, for probably a deore, maybe M675, or a zee, but that is for a different topic ad will depend on my budget Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted April 29, 2014 Report Share Posted April 29, 2014 Sounds like pads moving in caliper as you said. Quote Link to comment Share on other sites More sharing options...
HippY Posted April 29, 2014 Author Report Share Posted April 29, 2014 Sounds like pads moving in caliper as you said. I will try to put my rear brake on the front ( although it has a small rocking as well, but not noticable) and see what happens, hopefully that Quote Link to comment Share on other sites More sharing options...
jack dickinson Posted April 29, 2014 Report Share Posted April 29, 2014 is it the rotor bolts coming loose? Quote Link to comment Share on other sites More sharing options...
dann2707 Posted April 29, 2014 Report Share Posted April 29, 2014 You should be able to see the pads moving if you look closer at them mate. Quote Link to comment Share on other sites More sharing options...
*gentlydoesit Posted April 29, 2014 Report Share Posted April 29, 2014 Its not the headset? Quote Link to comment Share on other sites More sharing options...
HippY Posted April 29, 2014 Author Report Share Posted April 29, 2014 Nope, they are tight As it turned out, the hub moves with the disc, so probably pads, but i will bolt on my rear brake to try it, as that wheel is rock free And yes, pads move like half mm with moving it by hands Quote Link to comment Share on other sites More sharing options...
Greetings Posted April 29, 2014 Report Share Posted April 29, 2014 Hub moves with the disc - do you mean rotates or moves in the dropouts? If it's the latter, get the bike upside down and check whether the funbolts aren't resting against the axle when tightened. Can happen with some hub/fork combos. Usually it's a problem with the forks having way too thin dropouts. I don't think this will apply to your setup but it's worth a check. Quote Link to comment Share on other sites More sharing options...
HippY Posted April 29, 2014 Author Report Share Posted April 29, 2014 ookay checked it and got a little bit confused Somehow the bolts get loose from the disc, and it happened before as well, with different bolts. There was a time when a bolt nearly turned itself out completely I am going to use the steel bolts with the tightening plate, that came with the disc and see if they make any difference. But am I right if I say that the disc mount on the hub is faulty? or it is just me who cannot set a discbrake up right? Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted April 29, 2014 Report Share Posted April 29, 2014 it is just me who cannot set a discbrake up right? 1 Quote Link to comment Share on other sites More sharing options...
HippY Posted April 29, 2014 Author Report Share Posted April 29, 2014 okay. so arrived home, took of the alu bolts put in the tightening plates, and tried to screw in the schimano bolts. as it turned out, they are like a mm/1.5mm longer than the alloy ones, that mean I cannot turn the bolt fully in Should I use metal spacers, or what should I do? Quote Link to comment Share on other sites More sharing options...
Jake. Posted April 30, 2014 Report Share Posted April 30, 2014 Use the spacers Quote Link to comment Share on other sites More sharing options...
Ross McArthur Posted April 30, 2014 Report Share Posted April 30, 2014 And loctite. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted April 30, 2014 Report Share Posted April 30, 2014 took of the alu bolts The issue was loose rotor bolts in that case - should have mentioned it in the first post! Quote Link to comment Share on other sites More sharing options...
HippY Posted April 30, 2014 Author Report Share Posted April 30, 2014 Sorry, i did not realised it until the post where i mentioned it :$ Is it normal that they get loose by themselves? Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted April 30, 2014 Report Share Posted April 30, 2014 Yes, need correct torque and threadlock - and alloy bolts aren't a good idea for rotors. Quote Link to comment Share on other sites More sharing options...
jack dickinson Posted April 30, 2014 Report Share Posted April 30, 2014 is it the rotor bolts coming loose? Quote Link to comment Share on other sites More sharing options...
N.Wood Posted April 30, 2014 Report Share Posted April 30, 2014 I run alternate steel and titanium bolts on my rotor, I found just ti bolts came loose all the time. The factory threadlock that came on the Hope steel bolts I use works really well. Also don't go too wild on the threadlock, if it drips onto the braking surface it will contaminate the brake as it's pretty oily. Quote Link to comment Share on other sites More sharing options...
HippY Posted April 30, 2014 Author Report Share Posted April 30, 2014 I run alternate steel and titanium bolts on my rotor, I found just ti bolts came loose all the time. The factory threadlock that came on the Hope steel bolts I use works really well. Also don't go too wild on the threadlock, if it drips onto the braking surface it will contaminate the brake as it's pretty oily. I use the factory Shimano bolts, that has a dot of threadlock attached so my case is I screw the bolt in, then it gets REALLY hard to screw( I do not screw it) and there is like a 1mm gap everywhere.... Quote Link to comment Share on other sites More sharing options...
dann2707 Posted April 30, 2014 Report Share Posted April 30, 2014 That'll be the threadlock? Quote Link to comment Share on other sites More sharing options...
HippY Posted April 30, 2014 Author Report Share Posted April 30, 2014 That'll be the threadlock? sooooo I should stop being a pussy and just turn those bolts in? Quote Link to comment Share on other sites More sharing options...
*gentlydoesit Posted April 30, 2014 Report Share Posted April 30, 2014 I use the factory Shimano bolts, that has a dot of threadlock attached so my case is I screw the bolt in, then it gets REALLY hard to screw( I do not screw it) and there is like a 1mm gap everywhere....pic? How deep did you get before it gets tight? Is the bolt bottoming out.. is it a straight through hole? Quote Link to comment Share on other sites More sharing options...
jack dickinson Posted April 30, 2014 Report Share Posted April 30, 2014 (edited) Yeah with my saint when I first went to put the rotor in it was so tight to screw in, it took me what felt like ages to screw them all in. Also I couldn't do any of it with jus my fingers I had to use the tool. Why do.t you put some copper grease on the bolts? I don't do it on the bolts near the front brake but every where else I do it. Btw I'm using all the standard Shinarno bolts Edited April 30, 2014 by jack dickinson Quote Link to comment Share on other sites More sharing options...
HippY Posted April 30, 2014 Author Report Share Posted April 30, 2014 pic? How deep did you get before it gets tight? Is the bolt bottoming out.. is it a straight through hole? il get some tomorrow Yeah with my saint when I first went to put the rotor in it was so tight to screw in, it took me what felt like ages to screw them all in. Also I couldn't do any of it with jus my fingers I had to use the tool. Why do.t you put some copper grease on the bolts? I don't do it on the bolts near the front brake but every where else I do it. Btw I'm using all the standard Shinarno bolts ohh I see, I might give it a "little bit" more power well, it has threadlock and with a grease I think it wont be as effective.. Quote Link to comment Share on other sites More sharing options...
jack dickinson Posted April 30, 2014 Report Share Posted April 30, 2014 (edited) If you don't have any spacers, why not just cut the bolt down a little bit? Edited April 30, 2014 by jack dickinson Quote Link to comment Share on other sites More sharing options...
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