harmertrials Posted May 18, 2012 Author Report Share Posted May 18, 2012 Tried that Jamie. The ally hub expands more than the steel sprocket so it only makes it tighter. I tried heating it up and then rapidly cooling it down, in order to break the seal, nadda. Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 18, 2012 Report Share Posted May 18, 2012 You basically clamp the wheel within the vice with the 'pinch' method rather than the ends of the chain Hopefully this should explain... 1 Quote Link to comment Share on other sites More sharing options...
stunt man t Posted May 18, 2012 Report Share Posted May 18, 2012 You basically clamp the wheel within the vice with the 'pinch' method rather than the ends of the chain Hopefully this should explain... doesnt everybody do it like that? Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 18, 2012 Report Share Posted May 18, 2012 It's mainly the little triangle bit (top right) I was trying to show... Quote Link to comment Share on other sites More sharing options...
Jamie_Trials Posted May 18, 2012 Report Share Posted May 18, 2012 It's mainly the little triangle bit (top right) I was trying to show... Now that's crafty Sometimes it's best to just cut it off, my Echo hub shell bent 1/4 of the way around trying to remove a sprocket before. Quote Link to comment Share on other sites More sharing options...
Blake Posted May 18, 2012 Report Share Posted May 18, 2012 It's mainly the little triangle bit (top right) I was trying to show... So does that little point stop it from turning? Quote Link to comment Share on other sites More sharing options...
harmertrials Posted May 18, 2012 Author Report Share Posted May 18, 2012 Cheers mark will try that tomorrow when I'm back in the workshop! Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 18, 2012 Report Share Posted May 18, 2012 So does that little point stop it from turning? Yeah, 'cos you'd basically have to somehow force that entire part of the link as well as the chain/sprocket/hub combo through the vice. Quote Link to comment Share on other sites More sharing options...
Blake Posted May 18, 2012 Report Share Posted May 18, 2012 That is genius. Quote Link to comment Share on other sites More sharing options...
JD™ Posted May 18, 2012 Report Share Posted May 18, 2012 If it doesn't work, just send it to me. I'll definitely send both back. Troll. Quote Link to comment Share on other sites More sharing options...
harmertrials Posted May 18, 2012 Author Report Share Posted May 18, 2012 What utter banter Quote Link to comment Share on other sites More sharing options...
williams Posted May 18, 2012 Report Share Posted May 18, 2012 It might not be a good tip, and someone has already mentioned it... But I hade the same problem, and then I heated the sprocket up with a blow torch, put a chain around the sprocket and clamped it in a vice, felt like butter to take off. Worked like a threat for me, the sprocket is still going strong after 2 months of riding. Quote Link to comment Share on other sites More sharing options...
JD™ Posted May 18, 2012 Report Share Posted May 18, 2012 What utter banter You can always count on me to troll you sir. It's in jest now, obviously. Quote Link to comment Share on other sites More sharing options...
dave33 Posted May 19, 2012 Report Share Posted May 19, 2012 if its 15t send me the wheel and i can take it off its going to cost you though Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 19, 2012 Report Share Posted May 19, 2012 Price war 1 Quote Link to comment Share on other sites More sharing options...
dave33 Posted May 19, 2012 Report Share Posted May 19, 2012 Price war but if its on tight you wont get it off the way your explaining, not without damaging the sprocket.. unless you have the right tools for the job. Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 19, 2012 Report Share Posted May 19, 2012 We've been sent a variety of "tight" sprockets before, and haven't been beaten yet. The chain we use is pretty burly so the sprocket itself doesn't actually come into contact with anything at all, so it can't really get damaged as such (unless you somehow managed to split the sprocket, but I would've thought that was faaaaairly unlikely, and hasn't happened before...). Quote Link to comment Share on other sites More sharing options...
dave33 Posted May 19, 2012 Report Share Posted May 19, 2012 We've been sent a variety of "tight" sprockets before, and haven't been beaten yet. The chain we use is pretty burly so the sprocket itself doesn't actually come into contact with anything at all, so it can't really get damaged as such (unless you somehow managed to split the sprocket, but I would've thought that was faaaaairly unlikely, and hasn't happened before...). fair enough, but you wont get a sprocket off a "26 wheel that i have been using, iv seen loads of people try and fail thats what i made a tool Quote Link to comment Share on other sites More sharing options...
Mark W Posted May 19, 2012 Report Share Posted May 19, 2012 Wouldn't be the first time I've heard that, but cool. Quote Link to comment Share on other sites More sharing options...
harmertrials Posted May 19, 2012 Author Report Share Posted May 19, 2012 Mark you ledge, got it off. Best method. Quote Link to comment Share on other sites More sharing options...
F.N.G Posted May 20, 2012 Report Share Posted May 20, 2012 I have just got a new sprocket, lets just hope mine is not like this haha Quote Link to comment Share on other sites More sharing options...
jigga Posted May 21, 2012 Report Share Posted May 21, 2012 (edited) I use a chunk of brass ( A brass drift) about 4-5" long. Brass being softer than the Sprocket, you can place the end of the drift against a tooth, give it a good whack or too, then make your way round the sprocket every 2-3 teeth. This helps break any alloying or adhesions that seems to build up, or just sheer torqued-on tightness. Then wrap and old chin round it, clamp that in the vice as if you were clamping the sproket in the vice to turn the wheel, but with the chain to protect the teeth, then get you and a Mate to give it a good heeve-ho in the right direction and it should unscrew. I went through Heaps of sprokets too before I found this method. Used to cut them off or trash them with Huge industrial size pipe-wrench on it, which still didnt get it off. IveTried heating it up, that just made the spokes weak having changed the metalurgy, tried splitting it off like nut splitting, that just f**ked the Hub. I Tried a big bar through the cut-out in the rim, that bend the bar and made the rim look shit. Try the brass drift ( with the Tyres on and pumped-up so you can hit it whilst the wheel is on the floor/bench, then clamp it as Mark W's photos still with the tyre on for something to hold and twist it. Make sure you put plenty grease on the threads before putting the sprocket back on. Edited May 21, 2012 by jigga Quote Link to comment Share on other sites More sharing options...
joes Posted September 14, 2013 Report Share Posted September 14, 2013 any one ever tried installing the rear wheel on a bike with a front fixed cog, then trying to loosen the cog up using the pedals? sounds dangerous, but i'm running out of options on removing the cog. all this effort so as to replace a snapped spoke. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted September 14, 2013 Report Share Posted September 14, 2013 That may work, but you'd need a front chainring or splined sprocket of course! And the smaller the better. Quote Link to comment Share on other sites More sharing options...
bing Posted September 14, 2013 Report Share Posted September 14, 2013 Wrap the chain around the sprocket using mark w method, but put the chain in the vice instead of the sprocket. The put an m5 bolt through the chain at the opposite end of the vice. Then apy some newtons to the wheel. Never failed me yet. And leave the tyre pumped up so you have something to hold onto Quote Link to comment Share on other sites More sharing options...
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