trialsnake Posted April 30, 2015 Report Share Posted April 30, 2015 Know this has been covered before but hitting a dead end so looking for some brainstorming. The screw on sprocket on my echo TR hub is stuck on. Steps taken so far: 1. Soaked in WD40 2. Attempted removal with chain whip - snapped 3. Got bike shop to try better chain whip -no luck 4. Hammer and chisel - no luck 5. Cut teeth on opposite sides then in vice with 1m of leverage - nothing 6. Drilled holes as close to threads as I dare then attempted 4 and 5 - nothing 7. Blowtorch heated then tried 4 and 5 - nothing Only step I can think of is dremel it but any other advice welcomed??? Going to try the blowtorch again tonight just in case the heating and cooling has worked wonders but not holding much hope. Quote Link to comment Share on other sites More sharing options...
dngr2self Posted April 30, 2015 Report Share Posted April 30, 2015 Make a decent chain whip out of a metre length of flat bar and piece from a good chain (not some wimpy 9 speed thing). Thats what I did and it worked a treat. 1 Quote Link to comment Share on other sites More sharing options...
trialsnake Posted April 30, 2015 Author Report Share Posted April 30, 2015 I'll give that a try though already had a long bar on. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted April 30, 2015 Report Share Posted April 30, 2015 Chain whip doesn't work. Tried the technique in the video on TartyBikes site? Always works for us. 1 Quote Link to comment Share on other sites More sharing options...
Mark W Posted April 30, 2015 Report Share Posted April 30, 2015 Funnily enough Adam, I just e-mailed you about that... As with Adam, the method of doing it where you wrap a piece of chain around the sprocket then clamp that in the vice seems to work best from my experience. If you leave the tyre on and inflated, you can get a couple of you grabbing it and wrestle it off that way. It seems like shocking it initially works best which is why I've often found that just going down the long leverage bar route didn't work as well. 1 Quote Link to comment Share on other sites More sharing options...
HippY Posted April 30, 2015 Report Share Posted April 30, 2015 what I have done:: Go to the lcoal car mechaniker, asked to borrow the vice, that is designed for car parts so beefy, and bought some KMC 610 chain (really beefy) Then tartys method, dont be afraid to push the wheel hard. spokes will bend and it will be scary, but then again this is the only way to take off the sprocket. after retension the spokes Quote Link to comment Share on other sites More sharing options...
BJ. Posted April 30, 2015 Report Share Posted April 30, 2015 what I have done:: Go to the lcoal car mechaniker, asked to borrow the vice, that is designed for car parts so beefy, and bought some KMC 610 chain (really beefy) Then tartys method, dont be afraid to push the wheel hard. spokes will bend and it will be scary, but then again this is the only way to take off the sprocket. after retension the spokes You must have a terrible wheel builder if your spokes bend while taking a sprocket off! Quote Link to comment Share on other sites More sharing options...
trialsnake Posted April 30, 2015 Author Report Share Posted April 30, 2015 Aye, had a look at the tartys video, I've had it in the vice but just with me trying to turn. I'll get mates help and stick some force on there. Quote Link to comment Share on other sites More sharing options...
Mark W Posted April 30, 2015 Report Share Posted April 30, 2015 If you give it a "1... 2... 3... Now" count-in and both do it at the same time it'll work a lot better I can't remember if it's in the TartyBikes video or not, but the "pinched link" thing works really well for stopping the chain/sprocket from just slipping around in the vice. All you do is just have it so that instead of the chain wrapping completely around the sprocket, over one tooth you have a link 'pinched' up away from the tooth. Quote Link to comment Share on other sites More sharing options...
dngr2self Posted April 30, 2015 Report Share Posted April 30, 2015 Chain whip doesn't work. Tried the technique in the video on TartyBikes site? Always works for us. It does. I've done it. Quote Link to comment Share on other sites More sharing options...
HippY Posted April 30, 2015 Report Share Posted April 30, 2015 You must have a terrible wheel builder if your spokes bend while taking a sprocket off! it was a used wheel, builder unknown basically 2 of us were turning the wheel it was not that serious as the crank though it took me a 5 feet pole and loads of power, while hoping that the chain will not brake. it did not Quote Link to comment Share on other sites More sharing options...
Joe Sheehan Posted April 30, 2015 Report Share Posted April 30, 2015 Surely the obvious.. Heat? Use a conduction heater or blowtorch to heat the sprocket. Give it a whack then use the chain whip and voila? Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted April 30, 2015 Report Share Posted April 30, 2015 Aluminium crank / hub will expand more quickly than steel sprocket, so heat is not ideal. It does. I've done it. Sorry, short post as was on phone - I meant for one that's actually tight. You would just snap the chain even if you had a 20ft long chain whip. Quote Link to comment Share on other sites More sharing options...
jigga Posted May 1, 2015 Report Share Posted May 1, 2015 I would have thought excessive heat transfer could damage the bearing in the hub too as the flame doesnt just touch the sprocket. I use a 5" length of brass and work my way round the sprocket bashing it in the loosening direction a few times, then wrap it in a length of old chain in the vice. Borrow a mate and turn the wheel hard, it'll come off. Worked lots of ti mes and never damaged a sprocket as the brass is softer than the steel teeth. It sounds like yours was fitted without grease on the threads and some kind of alloying has happened. Had this with pedal threads before and the crank material ripped out within the threads when i tried to unscrew the pedal. Quote Link to comment Share on other sites More sharing options...
isitafox Posted May 1, 2015 Report Share Posted May 1, 2015 Trialtech/Jitsie sprocket removal tool? Quote Link to comment Share on other sites More sharing options...
trialsnake Posted May 4, 2015 Author Report Share Posted May 4, 2015 Thanks for all the responses, got it loose with 2 people and sprocket in vice Quote Link to comment Share on other sites More sharing options...
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