The lemonade man Posted November 14, 2006 Report Share Posted November 14, 2006 Been having a go at getting the fixed cog off my cranks, going FFW. Tried most things, got a chain whip on it and some WD40 but it's pretty solid. Anyone done this before, should I try getting a blowtorch to it? Quote Link to comment Share on other sites More sharing options...
Ali C Posted November 14, 2006 Report Share Posted November 14, 2006 grind it off Quote Link to comment Share on other sites More sharing options...
Janson Posted November 14, 2006 Report Share Posted November 14, 2006 I've done this a few times, with cog intact...What you need:-Crank puller to get crank off bike-Piece of chain, 20+ links ideally-Vice-Long metal pipe or similar-HammerStart off by taking the crank off the bike. Wrap the chain around the sprocket, ideally a tall chain like a KMC Kool or a KHE Collapse to protect the teeth. Clamp the sprocket in the vice, tighten it as hard as you dare, you can go pretty hard on this.. Slip the pipe over the crank, and give it some force. It will be hard to get off, smacking it with a hammer could help I guess, I've never needed to. The pipe I used the last time was 5ft long, but that's because it was the only one I had lying around... Long is good though.Have fun. Quote Link to comment Share on other sites More sharing options...
Fishy Posted November 14, 2006 Report Share Posted November 14, 2006 Blow torch it, or grind it off. Quote Link to comment Share on other sites More sharing options...
' Mart ' Posted November 14, 2006 Report Share Posted November 14, 2006 ive just done mine today lol,big vice, very tightly done, then i got a scafold pipe my grandad had lying around put tht over crank and just pushed it came off so easy it was unreal no effort propably because of all the leverage lol Quote Link to comment Share on other sites More sharing options...
kid creole Posted November 14, 2006 Report Share Posted November 14, 2006 I took mine to halfords last week and they got it off and only charged £5.00 which is nothing in comparison to the effort it takes to get it off .Especially if you don't own a vice and a scaffold pole. Quote Link to comment Share on other sites More sharing options...
' Mart ' Posted November 14, 2006 Report Share Posted November 14, 2006 i took mine to halfords the time before this, and got it done for £Nothingjust walked in and said need a favour mate, and he had it off in 5 mins, was kinda Hot though Quote Link to comment Share on other sites More sharing options...
kid creole Posted November 14, 2006 Report Share Posted November 14, 2006 i took mine to halfords the time before this, and got it done for £Nothingjust walked in and said need a favour mate, and he had it off in 5 mins, was kinda Hot though damn i thought i got a good deal ...lol yeah halfords are ok ! Quote Link to comment Share on other sites More sharing options...
The lemonade man Posted November 14, 2006 Author Report Share Posted November 14, 2006 Cheers guys, I'll try it in a vice tomorrow, if not I guess I'll have to grind it off.Thanks. Quote Link to comment Share on other sites More sharing options...
David Posted November 14, 2006 Report Share Posted November 14, 2006 As mentioned above leverage really is the key to this. A scaffold/gas pipe is ideal Quote Link to comment Share on other sites More sharing options...
Onza Kieron Posted November 15, 2006 Report Share Posted November 15, 2006 I grinded a flat on each side, then whacked it in a vice, I warn though, dont do it up too tight as then your pressing the threads on the ring onto the crank arm, thus creating more friction an dmaking it harder to remove. Quote Link to comment Share on other sites More sharing options...
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