CroTrials Posted June 26, 2008 Report Share Posted June 26, 2008 Actually i have 2 problems, and one is caused by another. I have a adamant a1 frame and a 68/170 mm axel with truvativ hussefelt cranks. The problem is that the cranks are so close to my rear magura that i can barely set my magura tanks not to bez kicked by the cranks (theres a milimeter space between the crank and the tank on each side), so when i do set them up, because of the breaking force the tanks move a milimeter, and i cant turn my cranks without kicking them. I have tryed to tigthen the bolts on the magura mounts, so that they dont move, but its impossible. which brings me to my second problem. The winding where the bolts go is smashed because i used allot of force to tighten it, i dont know how to say, the bolts dont tighthen, they just turn in one place. Can someone please help me with this problem? Im almost the only person in croatia who rides trials and i dont know who to turn to Quote Link to comment Share on other sites More sharing options...
Daniel C Posted June 26, 2008 Report Share Posted June 26, 2008 put some spacers on your bottom bracket to move the cranks out and you have possobly striped your threads on you 4-bolt mounts so you will have to get it helicoiled. Quote Link to comment Share on other sites More sharing options...
Dale-Hill Posted June 26, 2008 Report Share Posted June 26, 2008 (edited) The second problem sound like you have striped the threads in the mount. You can fix this by helicoli or taping it to m6 and getting a bigger bolt. Hope i helped Dale Edit: beaten to it Edited June 26, 2008 by Dale-Hill Quote Link to comment Share on other sites More sharing options...
CroTrials Posted June 26, 2008 Author Report Share Posted June 26, 2008 Thx for the fast replyies, can you please explain me this helicoiled procedure? where can i buy spacers? Quote Link to comment Share on other sites More sharing options...
Chris Woodhouse Posted June 26, 2008 Report Share Posted June 26, 2008 I would personally tap the hole to M6 as helicoils can come loose but a thread cant however you will have to drill your brake mounts. Chris. Quote Link to comment Share on other sites More sharing options...
G-baby158 Posted June 26, 2008 Report Share Posted June 26, 2008 I would personally tap the hole to M6 as helicoils can come loose but a thread cant however you will have to drill your brake mounts. Chris. No No No No No dont tap them to m6 get them helicoiled so much better and they havn't come loose for me and i dont think they have for anyone else. Quote Link to comment Share on other sites More sharing options...
Chris Woodhouse Posted June 26, 2008 Report Share Posted June 26, 2008 No No No No No dont tap them to m6 get them helicoiled so much better and they havn't come loose for me and i dont think they have for anyone else. Not necesarily no, but say you helicoil them and it comes loose you get left with a 7mm hole, if you tap it and it goes wrong then you can helicoil it because you will be left with a smaller hole that you can still helicoil, all im saying is i have tried both methods and i found tapping it to m6 best. Quote Link to comment Share on other sites More sharing options...
Dale-Hill Posted June 26, 2008 Report Share Posted June 26, 2008 No No No No No dont tap them to m6 get them helicoiled so much better and they havn't come loose for me and i dont think they have for anyone else. Yep i pulled one of mine out And another one it coming loose Quote Link to comment Share on other sites More sharing options...
CroTrials Posted June 26, 2008 Author Report Share Posted June 26, 2008 Ok, what is helicoiling? Quote Link to comment Share on other sites More sharing options...
sstein Posted June 26, 2008 Report Share Posted June 26, 2008 don't space the bb out as it wont work. Replace your crankset. Trust me, I had the same problem, got something with a 128mm bb. Quote Link to comment Share on other sites More sharing options...
markrat Posted June 27, 2008 Report Share Posted June 27, 2008 http://coolercasesuk.co.uk/showthread.php?t=1211 This gives a how to helicoil. Not on a bike but same principle. Hope it helps Quote Link to comment Share on other sites More sharing options...
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