Herr.Wolfkatze Posted June 30, 2009 Report Share Posted June 30, 2009 Got a hope mono trials and the rotor was slightly out of true before, pretty unnoticeable, now for some reason the thing has gone way bent. It's not a huge hindrance whilst pedalling but I do notice the wheel doesn't move very far before stopping now + the slight noise it makes is starting to annoy me more than my freehub clicking annoys most people.Is there any easy way of setting it right? Quote Link to comment Share on other sites More sharing options...
mista-neos Posted June 30, 2009 Report Share Posted June 30, 2009 Some guy my friend knows took my rotor and heated it up and started hitting it with a hammer, at it went true so try that. Quote Link to comment Share on other sites More sharing options...
Captain Scarlet Posted June 30, 2009 Report Share Posted June 30, 2009 Place it on a smooth flat surface (work bench or whatever), have a cloth to protect against any noticeable impacts from the mallet you are about to whack it flat with. Quote Link to comment Share on other sites More sharing options...
Herr.Wolfkatze Posted June 30, 2009 Author Report Share Posted June 30, 2009 Some guy my friend knows took my rotor and heated it up and started hitting it with a hammer, at it went true so try that.Heated it up? Like what, cooked it in the oven? Christ, how long for and at what temperature?I also only have one of those regular like... Hammers with the hitting side and the side that removes nails. Is this okay? Quote Link to comment Share on other sites More sharing options...
James Quigley Posted June 30, 2009 Report Share Posted June 30, 2009 leave the rotor on the bike, cover with a clean rag and use an adjustable spanner to GENTLY bend the rotor back to where it should be. Quote Link to comment Share on other sites More sharing options...
Herr.Wolfkatze Posted July 1, 2009 Author Report Share Posted July 1, 2009 (edited) leave the rotor on the bike, cover with a clean rag and use an adjustable spanner to GENTLY bend the rotor back to where it should be.Roger roger, sounds about right to meEDIT: *sigh* I think I f'd it up more. Will try again in the morning -.- Too hot right now, must sleep. Edited July 1, 2009 by Herr.Wolfkatze Quote Link to comment Share on other sites More sharing options...
Matt Vandart Posted July 1, 2009 Report Share Posted July 1, 2009 leave the rotor on the bike, cover with a clean rag and use an adjustable spanner to GENTLY bend the rotor back to where it should be.This is the way to do it, I just done mine and it's a 200mm.Get yerself a marker pen and as you find the wonkey bits mark them with the pen, then you know where to bend it.Be patient and don't bend it too far, you have to go pat the elastic limit or it will just spring back (i.e bend it about twice as much as it is out of true.)Prepare to be pissed off with doing it, it is very annoying.By the way, I don't bother using a rag, just the adjustable spanner, you can see how much your bending it better, the bigger the spanner the better.Matt Quote Link to comment Share on other sites More sharing options...
JonMack Posted July 1, 2009 Report Share Posted July 1, 2009 (edited) I tend to use the rotor arms as a guide for where I need to bend it. If it's rubbing that badly you should probably get the mounts faced on the forks if they aren't already, and if it's rubbing on the outside pad you can always shim it, however if it's rubbing on both then just work slowly with a spanner, you'll never get it perfectly straight though but you can do a pretty good job. Edited July 1, 2009 by JonMack Quote Link to comment Share on other sites More sharing options...
Bearded Midget Posted July 1, 2009 Report Share Posted July 1, 2009 Heated it up? Like what, cooked it in the oven? Christ, how long for and at what temperature?I also only have a 'claw hammer'i just put it on a flat surface protect it like captian said and hit it flat. i you use a claw hammer then try get a small piece of wood say 3inches wide and hit it all over, should do the trick. Quote Link to comment Share on other sites More sharing options...
Jitters Posted July 1, 2009 Report Share Posted July 1, 2009 Hmmm, whacking on your rotor with a hammer... doesn't sound like a good plan to me, especially since I doubt your hammer's face isn't polished proper for metal forming.. Take it to a shop with the wheel/rotor on the bike. They have a simple tool for bending it back into place. Should only take a minute or two if they're decent mechanics. Quote Link to comment Share on other sites More sharing options...
r2wtrials Posted July 1, 2009 Report Share Posted July 1, 2009 Tight arse... just buy a new one!!! Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 1, 2009 Report Share Posted July 1, 2009 They have a simple tool for bending it back into place.They certainly do:PS: Smacking it between two flat things doesn't do anything, the rotor needs to go back past the elastic limit of the material to bend it back straight. Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted July 1, 2009 Report Share Posted July 1, 2009 PS: Smacking it between two flat things doesn't do anything, the rotor needs to go back past the elastic limit of the material to bend it back straight.Ad's speaks the truth.... gentle bending with an adjustable Quote Link to comment Share on other sites More sharing options...
PaRtZ Posted July 1, 2009 Report Share Posted July 1, 2009 They certainly do:PS: Smacking it between two flat things doesn't do anything, the rotor needs to go back past the elastic limit of the material to bend it back straight. This mans been reading up! If the rotor does not exceed the plastic limit, it will simply return to its orginal properties a la hookes law.Do the adjustable as a lever method. Bet my nuts it'll work. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 2, 2009 Report Share Posted July 2, 2009 This mans been reading up!LOL, good to see my degree wasn't completely useless... Quote Link to comment Share on other sites More sharing options...
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