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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 05-08-06, 05:27 PM   #1
jandops
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I just can't do it

no matter how hard i try i just cant get the last bit of slippage out of my cog. ive used plenty of grease, ive rotafixed it, ive used cheater bars on the lockring, ive tried everything. i cant ever get it tight enough. is it my cog/lockring/hub set up? ive heard that if the cog isnt thick enough then the lockring wont ever touch no matter how tight it is. could that be the case? i have a DA cog(1/8th) and DA lockring and an iro hub.
ive done successful set ups on suzue-slps and quando hubs so i know its possible and that im not completely inept.

does anyone have this exact same set up and no problems? should i get an eai cog? what the hell is the problem?
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Old 05-08-06, 05:34 PM   #2
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The cog thread area might be too narrow. Either get an EAI cog (wider thread area) or try finding a little spacer that fits betw. cog and lock ring to get it tight. Might work.
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Old 05-08-06, 05:46 PM   #3
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I would take it to a shop and have them check it out.
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Old 05-08-06, 05:52 PM   #4
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You might be able to get a 1mm spacer at your LBS. I tried searching online but couldn't find anything. It's such a cheap part that I imagine not many online retailers are going to stock it.

If that doesn't work, then try an EAI cog. I have one on my IRO hub w/ the Formula lockring and no problems yet.
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Old 05-08-06, 06:27 PM   #5
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iro/da/da combo has served me well... stripped hub?
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Old 05-08-06, 06:29 PM   #6
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i have that exact same setup and no problems here.
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Old 05-08-06, 06:36 PM   #7
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sounds like you stripped the hub way back when you first installed it.
Formula/DA/DA combo here with no slippage.
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Old 05-08-06, 06:42 PM   #8
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I ran a dura ace cog and lockring on a Formula hub (which is what IRO hubs are) for a while and had no problems.

What are you using for a lockring spanner? I personally recommend a Park HCW5 BB spanner. The three-prong end works great on my dura ace hub lockring just by chance. One tooth engages the notch in the lockring, and another makes a fulcrum 1/3 way around the ring. No chance of slipping out of the groove.
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Old 05-08-06, 08:46 PM   #9
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this is going to sound really stupid, but are you sure it's slipping? For a while I though I was stripping out my hub, but I was just unweighting my back wheel so much at times that it totally lost traction.
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Old 05-08-06, 08:53 PM   #10
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i second getoutofnj's remark.. i've got the same setup - da/da/iro - and it's never slipped.
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Old 05-08-06, 09:40 PM   #11
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Quote:
Originally Posted by baxtefer
sounds like you stripped the hub way back when you first installed it.
Formula/DA/DA combo here with no slippage.
so a hub can be like a little stripped?
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Old 05-08-06, 09:44 PM   #12
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Quote:
Originally Posted by jandops
so a hub can be like a little stripped?
that's like saying you're a little pregnant
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Old 05-08-06, 10:14 PM   #13
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did you think that was possible?
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Old 05-08-06, 10:22 PM   #14
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i didn't think snapping a lockring in two was possible either, 'til i torqued an old surly a little too far with a DA tool and SNAP!
...that said, i've had no slippage problems with an IRO hub, DA cogs and the newer surly lockrings (with the additional thread). rotafixed, a 400-lb. gorilla skidding down lombard st. couldn't move them a mm.
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Old 05-08-06, 11:01 PM   #15
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lockring pliers are what you need.
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Old 05-08-06, 11:21 PM   #16
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pliers are definitely the way to go
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Old 05-09-06, 02:21 AM   #17
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no problems with an IRO/EAI/DA setup, here.
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Old 05-09-06, 07:28 AM   #18
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Tangentially related: most shops will go "huh?" if you ask for a track cog spacer, but everybody has bottom bracket spacers, which are the same diameter. Handy for fixing this problem and dialing in chainline. See the sheldon article for uber-precise cog width measurements.
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Old 05-09-06, 07:39 AM   #19
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Check which way your lockring is oriented. I was using a formula lockring with the beveled edge IN (installed by my LBS). Seemingly unfixable slippage problems. Then I flipped the lockring so that the larger flat side faced the cog. No problems since. Not sure if DA lockrings are beveled.
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