Sam Styles Posted July 18, 2010 Report Share Posted July 18, 2010 right... my left crank arm keeps coming loose, but the bolt is as tight as it can be, with locktight :@ when you first tighten the bolt, the crank is solid, but even if you tap it with a allen key, the crank arm becomes loose. im really getting annoyed with this now, and im gonna flip!!!! its been happening for a month now and i want to ride my bike with out being paranoid about the bolt :@ please help me!!!! Quote Link to comment Share on other sites More sharing options...
PeanuckleJive Posted July 18, 2010 Report Share Posted July 18, 2010 Look at the threads, are they buggered? Quote Link to comment Share on other sites More sharing options...
Sam Styles Posted July 18, 2010 Author Report Share Posted July 18, 2010 Look at the threads, are they buggered? nope threads are perfect. Quote Link to comment Share on other sites More sharing options...
Dale-Hill Posted July 18, 2010 Report Share Posted July 18, 2010 What about the BB splines? and on the crank too? Quote Link to comment Share on other sites More sharing options...
dirt jumper jake Posted July 18, 2010 Report Share Posted July 18, 2010 ISIS Or Sqaure taper? 1 Quote Link to comment Share on other sites More sharing options...
How Original Posted July 18, 2010 Report Share Posted July 18, 2010 Have you tried just adding a different bolt anyway? Or perhaps put some (locktite?) I think it's called to hold it in place. Quote Link to comment Share on other sites More sharing options...
Sam Styles Posted July 18, 2010 Author Report Share Posted July 18, 2010 its a isis, and the splines apear to be okay, but i havent took the arm off cause i dont have the tool. Quote Link to comment Share on other sites More sharing options...
Lawnmowerman Posted July 18, 2010 Report Share Posted July 18, 2010 Ride with it loose once and it's knackered. You need a new crank. Quote Link to comment Share on other sites More sharing options...
Sam Styles Posted July 18, 2010 Author Report Share Posted July 18, 2010 Have you tried just adding a different bolt anyway? Or perhaps put some (locktite?) I think it's called to hold it in place. i dont have another bolt and i have locktited the threads... did you mean the splines? Quote Link to comment Share on other sites More sharing options...
Dale-Hill Posted July 18, 2010 Report Share Posted July 18, 2010 (edited) Go to your lbs and take your crank off and have a look it could be that that's worn that what happened to mine. Edited July 18, 2010 by Dale-Hill Quote Link to comment Share on other sites More sharing options...
Sam Styles Posted July 18, 2010 Author Report Share Posted July 18, 2010 Go to your lbs and take your crank off and have a look it could be that that's worn that what happened to mine. i hope its not ive only had the cranks about 3-4 months and they are zoo Quote Link to comment Share on other sites More sharing options...
liam n Posted July 18, 2010 Report Share Posted July 18, 2010 if u wanna get ur crank off without tool try un-doing the bolt putting boiling water on the crank then hit the crank off with a mallet..it worked for me but ive got square taper but it will help to get rid of some anger (hitting it with a hammer) Quote Link to comment Share on other sites More sharing options...
mods Posted July 18, 2010 Report Share Posted July 18, 2010 Try puttin a BB spacer on but dont go so tight that you push it off. That should do the trick. My mate has this problem at the mo and he thinks he needs new cranks but in fact he used a breaker bar to tighten his cranks and just pushed the spacer off causing the wobble. Quote Link to comment Share on other sites More sharing options...
Sam Styles Posted July 18, 2010 Author Report Share Posted July 18, 2010 i will see if i can find anything that will act as a spacer cheers guys, but still more ideas and help would be apreachiated . i like the one about letting out some anger lol Quote Link to comment Share on other sites More sharing options...
Daniel Gray Posted July 18, 2010 Report Share Posted July 18, 2010 Try a spacer dude, if not then either the splined BB or crank arm is warn and will have to be replaced. Quote Link to comment Share on other sites More sharing options...
modifiedridah2k9 Posted July 19, 2010 Report Share Posted July 19, 2010 if u wanna get ur crank off without tool try un-doing the bolt putting boiling water on the crank then hit the crank off with a mallet..it worked for me but ive got square taper but it will help to get rid of some anger (hitting it with a hammer) Its weird how it doesnt come off with no tool, because mine fell off one day. Ive never heard of this happening to a crank, good luck getting it fixed mate. Quote Link to comment Share on other sites More sharing options...
angua Posted July 19, 2010 Report Share Posted July 19, 2010 Get darrens dad on the case Quote Link to comment Share on other sites More sharing options...
Luke Dunstan Posted July 19, 2010 Report Share Posted July 19, 2010 I'd say the crank is done for. I've only just moved over to using Isis so i'm not sure if the symptoms are the same, as it happened to my square taper. a few years back. Quote Link to comment Share on other sites More sharing options...
stya_bear Posted July 19, 2010 Report Share Posted July 19, 2010 Mine did this, and the problem was that the arm was worn on the inside, and I had hardly rode it which was gutting. So my mate luckily gave me some spare arms and now its solid! Get your arm off and have a look mate Quote Link to comment Share on other sites More sharing options...
TROYston Posted July 19, 2010 Report Share Posted July 19, 2010 Pauls have crank pullers. As a quick cheap fix, you can use some handlebar as a spacer, Measure up and chop a bit of the bar, just use you bmx ones . Sounds like your Zoo! cranks are buggered there zoe. Quote Link to comment Share on other sites More sharing options...
JT! Posted July 19, 2010 Report Share Posted July 19, 2010 People keep talking about getting the crank off with crank pullers and using mallets, but in the OP he says it keeps comming loose so surely it'll pull off easily by hand? Quote Link to comment Share on other sites More sharing options...
Luke Dunstan Posted July 19, 2010 Report Share Posted July 19, 2010 People keep talking about getting the crank off with crank pullers and using mallets, but in the OP he says it keeps comming loose so surely it'll pull off easily by hand? When it happened to mine, it wobbled, but was still stuck on. Don't know how. Quote Link to comment Share on other sites More sharing options...
Sam Styles Posted July 19, 2010 Author Report Share Posted July 19, 2010 no way could you take it off by hand! i will see if i can borrow james crank tool, if i ask him nicely... i think i may try the handle bar thing! that sounds really good! but not my bmx ones they were bloody 65 quid :L cheers guys, im gonna see what i can do Quote Link to comment Share on other sites More sharing options...
cai Posted July 21, 2010 Report Share Posted July 21, 2010 It could just be your BB thats loose.. I don't see how your crank can be loose, yet also be tight to the BB axle Quote Link to comment Share on other sites More sharing options...
Sam Styles Posted July 21, 2010 Author Report Share Posted July 21, 2010 i have found the problem!!!!! right... i have found out that the bb spacer has, affectively, worn away, and left a groove where the crank arm pushes up against... therefore, the crank bolt would have been tight on the bb axle, but the crank would still have room to move as the spacer had given it the room. this explains why the bolt was tight and the crank still wobbled. now, i have tried grips to get the spacer off, but it will not budge, so i am going to have to buy a new bb ( just a cheep and chearfull to tide me over ). right now i am in the procces of bodgeing the groove with one of my legendary cable tie bodges xD should hopefully order a bb tonight cheers everyone for your help (i got the arm off with a hammer) thanks guys Sam Quote Link to comment Share on other sites More sharing options...
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