Chris Elson Posted October 21, 2009 Report Share Posted October 21, 2009 Given up trying to look on the net... this was the last resort sorry. My rear screw on sproket on my try all h hub will NOT come off! tried heating it up, put a chain around the sproket and used a vice and turned the wheel. Nothing is workinggggHelppp pleaseeee! Quote Link to comment Share on other sites More sharing options...
Little Yoshi Posted October 21, 2009 Report Share Posted October 21, 2009 Are you going to use this sproket again? Quote Link to comment Share on other sites More sharing options...
Chris Elson Posted October 21, 2009 Author Report Share Posted October 21, 2009 noo Quote Link to comment Share on other sites More sharing options...
Little Yoshi Posted October 21, 2009 Report Share Posted October 21, 2009 Blow tourch it till red. Cover in water to shock cool it and stick in the vice. Quote Link to comment Share on other sites More sharing options...
Chris Elson Posted October 21, 2009 Author Report Share Posted October 21, 2009 I dont want to f"k the hub though , wont heating it up to much bend it Quote Link to comment Share on other sites More sharing options...
Ben John-Hynes Posted October 21, 2009 Report Share Posted October 21, 2009 Grind/cut that bad boy! Quote Link to comment Share on other sites More sharing options...
Chris Elson Posted October 21, 2009 Author Report Share Posted October 21, 2009 haha was thinking that but ill prob cut the threds... lol Quote Link to comment Share on other sites More sharing options...
willis-gu Posted October 21, 2009 Report Share Posted October 21, 2009 i know this is a bit daft, and you probs wont have time, but my friends dad made a tool. basically its hard to explain but theres two circular plates and there are several bolts which fit into the teeth and then nuts tighten them up, so the plates are stuck to the sprocket/freewheel, then all you need is a wrench and a massive bar on the end of it!!! Quote Link to comment Share on other sites More sharing options...
Chris Elson Posted October 22, 2009 Author Report Share Posted October 22, 2009 yeah i know what u mean. do you think it will help to heat it up? Quote Link to comment Share on other sites More sharing options...
NVWOCI WVS Posted October 22, 2009 Report Share Posted October 22, 2009 I tacked a 4ft pipe to my stuck-sprocket with a stick welder and clamped the wheel to the bench. Plenty of leverage to get it off. Quote Link to comment Share on other sites More sharing options...
Chris Elson Posted October 22, 2009 Author Report Share Posted October 22, 2009 I have tried everything! its like the sprocket is welded on! brought the wheelset from a brand new koxx bike, but the rear sprocket which was fitted on there is spaced to small and any chain rubs on the spokes... so i have to change the sprocket. Quote Link to comment Share on other sites More sharing options...
willis-gu Posted October 22, 2009 Report Share Posted October 22, 2009 Well apparently heating it up does help because it will expand the sprocket, which should make it easier to turn off. I cut up a pair of old handle bars and have stook them on the end of a wrench i have, it gets anything off! the bigger the bar the better! Quote Link to comment Share on other sites More sharing options...
trialsmax04 Posted October 22, 2009 Report Share Posted October 22, 2009 (edited) i had this problem. Is it a drilled sproket? if so then two bolts in the holes at opposite sides and the bigest piece of bar possible and crank it off. If its not drilled, get your drill out and drill it! Edited October 22, 2009 by trialsmax04 Quote Link to comment Share on other sites More sharing options...
darrenhopper Posted October 22, 2009 Report Share Posted October 22, 2009 I tacked a 4ft pipe to my stuck-sprocket with a stick welder and clamped the wheel to the bench. Plenty of leverage to get it off.+1 for this!A good weld will make the strongest possible join to the sprocket and will heat it up well past blowtroch territory without directly heating the hub.And you can use the longest bit of steel you've got lying about. Quote Link to comment Share on other sites More sharing options...
Oli P Posted October 22, 2009 Report Share Posted October 22, 2009 (edited) I may be being stupid but if you heat it up then the aluminum will exband sooner than the steel/chromoly sprocket so it will make it a lot harder to get it off. Try cooling it down, would not be able to get it cold enough for it to come straight off but may make it a bit easier to get of with a large lever of some sort. Edited October 22, 2009 by Oli P Quote Link to comment Share on other sites More sharing options...
LiamWood! Posted October 22, 2009 Report Share Posted October 22, 2009 Cut the teeth off the sprocket so it has 2 flat edges so it fits ina vice, the turn the wheel the correct way. Quote Link to comment Share on other sites More sharing options...
pogo Posted October 23, 2009 Report Share Posted October 23, 2009 Dremell with a cutting bit and be careful Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted October 23, 2009 Report Share Posted October 23, 2009 bit of plate, many holes...and some 13mm head bolts to fit in the troughs of the sprocket. Clamp this in vice then swing off wheel? Quote Link to comment Share on other sites More sharing options...
willis-gu Posted October 23, 2009 Report Share Posted October 23, 2009 Cut the teeth off the sprocket so it has 2 flat edges so it fits ina vice, the turn the wheel the correct way.Canny good idea however not sure weather it will work for reasons i dont know why Quote Link to comment Share on other sites More sharing options...
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