Balthazor Posted November 1, 2008 Report Share Posted November 1, 2008 Hey guys, ive just purchased The Stigs Adamant A1, alls good but the none driveside crank arm has movement asif the crank bolt isnt tight enough, but when i tighten it as much as i can it still moves.The movement is side to side ( to and away from frame ) mainly with slight up and down.Ive asked Thestig on msn and he said tighten it right up, i cant tighten it any more, also the black plastic bit on the crank bolt is missing that side, would that make any difference ??Was wondering if i could take crank arm off and place a washer on ? or do i need new crank bolts ?The cranks are Echo cnc on isis bb not sure what make bb.Any help would be appreciated thankyou Quote Link to comment Share on other sites More sharing options...
totaltrials Posted November 1, 2008 Report Share Posted November 1, 2008 Is the crank arm pushing up against the bb (the end of the spline)?Even if the spline is worn on the cranks so much that it wobbles which is unlikely, the crank still shouldn't wobble in the way your describing as it will be clamped up against the BB.I would say there's something wrong with the crank bolt not clamping up properly, but first of all take the crank bolt out of the other side and swap the bolts around, see if it happens on the other side. Otherwise whack a spacer on the BB spline to see if that clamps it up properly.The black cap being missing isn't a problem. Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 Looking at the back of the crank arm its not up tight against the BB it moves slightly, im afraid to give it some welly to try tighten it more incase i break it, maybe i should try a washer ? Quote Link to comment Share on other sites More sharing options...
totaltrials Posted November 1, 2008 Report Share Posted November 1, 2008 You shouldn't really need to use a washer but how big is the gap between the crank and the end of the spline? Quote Link to comment Share on other sites More sharing options...
Sponge Posted November 1, 2008 Report Share Posted November 1, 2008 On the ISIS BB i'm using, which is the Echo TR one, they are supplied with a little thin washer ring for each side of the axle. Basically it' meant to slide on and have the cranks press against it. Without it, my cranks don't stay on tight. Look on Tartybikes and you'll see the little washer rings i'm talking about. Also, try and get new bolts, and put blue loctite on it... it'll make it a damn stiff and squeaky process if you want to ever extract the bolt, but in the mean time it completely eliminates the chance of the bolts vibrating loose. Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 The gap is about the width of a credit card but its enough to make the crank arm move about, duno what to do now may take crank arm off and see about a washer.. Quote Link to comment Share on other sites More sharing options...
Dannoo Posted November 1, 2008 Report Share Posted November 1, 2008 Let us know if a washer fixes your problem!Good luck Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 Ok took crank arm off, but i cant find a washer to fit there all too small Anyway while crank was off i cleaned it all up, and on the bolt it looked like a squashed on washer, or atleast some broken bits of metal like it was a splattered washer if you know what i mean ? Anyway i took that crap off and cleaned everything up put arm back on, tightened bolt real tight couple of hammer whacks its now tighter than before but still has slight movement. Quote Link to comment Share on other sites More sharing options...
Tom_ Posted November 1, 2008 Report Share Posted November 1, 2008 To clarify, is this isis bb or square taper?If its square its possible the crank arm is worn, thus needing a new crank/cranks. If its isis, there should be a spacer between the "butt" at the end of the splines and the crank when its tight, as thats the way there designed to be, if theres no washer obviously you will be left with a gap, so yea, as I think was previously mentioned try and find a washer to go over the bb before the crank goes on. If that fails it would be worth trying to find a washer with an internal diameter larger than the bottom bracket axel, and put it between the crank and the crank bolt (obviously it needs an external diamter smaller than the counter sunk hole in the crank) this should allow the bolt to push the crank further onto the axel. Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 Its isis bb Tom, and that sounds like the solution to me too, just aint got a washer lol Quote Link to comment Share on other sites More sharing options...
Revolver Posted November 1, 2008 Report Share Posted November 1, 2008 Sounds worn to me.You can cut little strips of coke can and stick them in the splines, but this is a fiddly and difficult task. Quote Link to comment Share on other sites More sharing options...
Tom_ Posted November 1, 2008 Report Share Posted November 1, 2008 or depending on the "warn-ness" you can use plumbers leak stop tape, or some of that metal tape thats really malliable, cant remember the name now. Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 Only the crank bolt looks worn, the crank arm and bb are fine. Quote Link to comment Share on other sites More sharing options...
Christophe' Posted November 1, 2008 Report Share Posted November 1, 2008 Hey guys, ive just purchased The Stigs Adamant A1, alls good but the none driveside crank arm has movement asif the crank bolt isnt tight enough, but when i tighten it as much as i can it still moves.The movement is side to side ( to and away from frame ) mainly with slight up and down.Ive asked Thestig on msn and he said tighten it right up, i cant tighten it any more, also the black plastic bit on the crank bolt is missing that side, would that make any difference ??Was wondering if i could take crank arm off and place a washer on ? or do i need new crank bolts ?The cranks are Echo cnc on isis bb not sure what make bb.Any help would be appreciated thankyou The black "plastic" bit makes all the difference , it stops the crank coming loose Quote Link to comment Share on other sites More sharing options...
Tom_ Posted November 1, 2008 Report Share Posted November 1, 2008 The black "plastic" bit makes all the difference , it stops the crank coming loose providing im thinking of the same black plastic bit, im sure that it does f**k all... Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 If the black plastic bit does indeed stop it coming loose, then does it also help snug up the fit nice and tight so no movement ?Also could i fix with a washer or should i buy new crank bolts ? Quote Link to comment Share on other sites More sharing options...
Christophe' Posted November 1, 2008 Report Share Posted November 1, 2008 If the black plastic bit does indeed stop it coming loose, then does it also help snug up the fit nice and tight so no movement ?Also could i fix with a washer or should i buy new crank bolts ?Sorry I was joking man, but you asked for it big style!Think about it !Is a bit of plastic going hold some cranks on your BB axle with your body weight and leverage bearing down on it???The real answer is : either your crank arms are damaged or BB or both.Go to shop , buy new ones.Sorry but im being straight. Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 Haha glad to be of humor for you, but honestly i wasnt sure if the black plastic bit had a washer on the end or something ? know why i was thinking maybe its that now ? If not oh well im dumb lol nvm thankyou for all your help Quote Link to comment Share on other sites More sharing options...
Revolver Posted November 1, 2008 Report Share Posted November 1, 2008 It turns out there's a guide to the coke can thing on the WIKI. Quote Link to comment Share on other sites More sharing options...
craigjames Posted November 1, 2008 Report Share Posted November 1, 2008 get some pics up, it doesnt sound like the crank splines are worn from the fact theres a gap. but then i dont use a small thin washer on any of my isis set ups and they all work fine. sounds like the bolt or either of the threads are bottoming out somewhere along the line. check the threads in the bb to see if theyre damaged, try a few different bolts. Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 1, 2008 Author Report Share Posted November 1, 2008 I think its down to a worn bolt head, ( well the underneath bit of bolt head bit that meets inside of crank arm ) on inspection it looked a bit worn and uneven looks like i may end up buying mew bolts. Quote Link to comment Share on other sites More sharing options...
totaltrials Posted November 3, 2008 Report Share Posted November 3, 2008 I think its down to a worn bolt head, ( well the underneath bit of bolt head bit that meets inside of crank arm ) on inspection it looked a bit worn and uneven looks like i may end up buying mew bolts.Have you even tried the bolt from the other crank yet? Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 3, 2008 Author Report Share Posted November 3, 2008 Have you even tried the bolt from the other crank yet?LOL been trying to sort the creeking headset forgot to try bolt from other arm, will get on to it soon, im just a bit done in got a nasty headcold Quote Link to comment Share on other sites More sharing options...
Fixed Pants™ Posted November 4, 2008 Report Share Posted November 4, 2008 Black plastic bit isn't gonna affect it.You sure it's just the non drive side? Could be a loose BB.If it's not a loose bb, get some coke can as a shim and make use of it (cut it to the size of the spline troughs and use it) Quote Link to comment Share on other sites More sharing options...
Balthazor Posted November 5, 2008 Author Report Share Posted November 5, 2008 Drive side is perfect, BB is solid but the wierd thing is when the bolt is tight the arm moves, asif the bolt is tight to the BB end but the part of the BB in the crank arm is too long, thus giving that tiny bit space and movement.I've got to go out today but when i get back later i'm gona take it off and take some pics of it all so it will help you to try and help me lol.. Quote Link to comment Share on other sites More sharing options...
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