removing cog on unlaced hub
10-27-06, 11:43 AM
#1
like, really sloppy
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removing cog on unlaced hub
i wrecked a wheel.. now i have this hub with a lockring and cog on it.. i havent tried to get them off but it seems like itll be near impossible.. anybody ever have this problem? solutions?
10-27-06, 11:47 AM
#3
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Vice + wood locks to hold the cog.
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10-27-06, 12:10 PM
#8
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oh snap, you all just got pwned.
although pcp might be the trick...
although pcp might be the trick...
10-27-06, 12:12 PM
#9
like, really sloppy
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i thought they meant miami vice
ive vised a cog a few times.. just wrap it in hefty motorcycle chain first..and rethink which way to turn the wheel a few times before you do it
ive vised a cog a few times.. just wrap it in hefty motorcycle chain first..and rethink which way to turn the wheel a few times before you do it
10-27-06, 12:12 PM
#10
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If you are semi-lazy, you only have to lace 1/2 the spokes... just the leading/trailing/whatever-you-want-to-call-them ones.
10-27-06, 12:14 PM
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If it's a flip flop hub, this thing+vise might work. I'm trying to think about rotation, but Lyrics Born, Cut Chemist, and beer last night have left my brain in a puddle this morning. If the rotation worked, you might just have the hub attached to the tool.
10-27-06, 01:02 PM
#15
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Wouldn't it work just for removing the lockring? If it threads onto the freewheel threads, you could use it for tightening on the cog, so why wouldn't it work with loosening the lockring? It's the same direction of rotation.
10-27-06, 01:02 PM
#16
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i have this problem too. but not cause i wrecked a wheel. but cause i was so excited about my new hubs that i didnt even think about removing the cog and lockring first. doh.
10-27-06, 02:52 PM
#17
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How did you get the spokes off the hub to begin with? Thinking it would be easier to bring my hubs to work in my bag and then straight to my local shop to get them rebuilt after getting hit, I broke my wheels down, leaving the cog and lockring on. I was able to get all the spokes out without a problem and when I picked up my newly built wheels yesterday, they said it wasn't really a problem getting new spokes in. The day I brought my hubs in and they noticed the cog still on, they talked about building up one side of the wheel first and then removing the cog or other things they might be able to do. The pointed out a hub hanging in their front window: a rather old dura ace hub that a local messenger bought and started to break down to just the hub. He couldnt' get the spokes out on the drivertrain side and brough it into them. The few attempts to remove the lockring and cog made the hub look more like one of those cinnamon twist things you can get at mall foodcourts. The spokes are still connected to the drive train side of the hub.
Just come to NYC and have Bike Works build your wheels.
Just come to NYC and have Bike Works build your wheels.
10-27-06, 08:23 PM
#18
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I've used a couple of big Var pin spanners into the drive side spoke holes with the cog in a cog vise but normal pin spanners aren't up to it. I've also twisted a hub by lacing up only the off-side flange. Use some Hoshi Z-bend aero spokes to let you lace up the drive side to remove the cog, then rebuild with proper spokes. No, I don't have a problem with repeating mistakes, I used to be a mechanic and people would bring in stuff. I was just riding along...
10-27-06, 10:09 PM
#20
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It honestly really isn't that possible. The only way to get a cog and lockring is to lace it up into a wheel again. We actually broke a hub in half at my shop trying to get both of em off. It was a ****ty hub, though.
10-27-06, 10:10 PM
#21
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i've done this a few times now.
i had a basic table vise, but i could not find a way to hold the hub still enough (without destroying the hub shell or flanges from clamp pressure). maybe with a better setup it would be possible
i had success building up a quick one-sided wheel using junk spokes and a junk rim.
cog size doesn't matter because you only need to lace up the NDS of the hub to get enough to work with.
i had a basic table vise, but i could not find a way to hold the hub still enough (without destroying the hub shell or flanges from clamp pressure). maybe with a better setup it would be possible
i had success building up a quick one-sided wheel using junk spokes and a junk rim.
cog size doesn't matter because you only need to lace up the NDS of the hub to get enough to work with.
10-27-06, 11:21 PM
#22
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Originally Posted by shants
Originally Posted by dutret
You would probably have better luck with a vise then a vice(unless your vice is pcp or something maybe).
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10-27-06, 11:54 PM
#23
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Originally Posted by brunning
i had success building up a quick one-sided wheel using junk spokes and a junk rim.
cog size doesn't matter because you only need to lace up the NDS of the hub to get enough to work with.
cog size doesn't matter because you only need to lace up the NDS of the hub to get enough to work with.
Ditto on that. I've done it with as few as 4 spokes. A steel 20" BMX rim is great for this.
10-28-06, 02:26 AM
#24
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howsabout this idea: remove the axle, then put 16 (or 18 or whatever) nails through the non-drive side into a board. Put the board in a vice (or vise if you like) and use the proper tools on the lockring and cog. I'd think 16 nails would hold the thing pretty firmly.
