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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 08-08-05, 07:47 PM   #1
efarrar
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I just popped my lockring!?

My flip-flop hub (and the fg-conversion it gave birth to) had just turned 2 months old yesterday. I was coming to a stop last night when I felt got that disconcerting feeling of coasting on a bike that is expressly not intended to do so. When I stopped I saw the lockring was popped off and there was a 15cm corkscrew of aluminum attached to it. I was heartbroken.
1) Was it something I did? Granted I just now learned to skid after buying a new front rim (can now hand-brake accurately) and a set of armadillo-no-grip-treads, and granted it was a crappy Suzue hub... But did I install my cog/ring improperly by just screwing them on "finger-tight" then letting my constant starting and stopping tighten it? or should I have used a chainwhip and a lockring tool to tighten them? I thought these were only for taking it off...Should I have used loc-tite even though I have a proper track hub? wouldn't that mean I'm stuck with one cog forever?

2) What should I do to fix it? just red loctite the sucker? Get the wheel rebuilt at yojimbo's? I still haven't used the flip side of my flip-flop hub..isn't there some kind of lockring for that side? Should I weld it? I don't feel too safe with _just_ loc-tite.
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Old 08-08-05, 07:52 PM   #2
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you put your lockring on finger tight? um, don't do that. This is the reason why lockring spanners exist.
your hub is hosed.
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Old 08-08-05, 07:55 PM   #3
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I wouldn't say finger tight, maybe, as tight as I could possibly get it short of using the proper tools or maybe a hammer, but yeah I will definitely have to buy one of those.
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Old 08-08-05, 07:56 PM   #4
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JBWeld the cog and lockring to your fixed side, and call it a "fixed fixed" hub. that's what I did (with my crappy Suzue hub) and it works fine.
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Old 08-08-05, 11:07 PM   #5
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The amount of torque transferred to the cog is the torque applied at the crank DIVIDED BY the gain ratio.

For instance, I ride 40x16 (it's mountain-galore around here... and I'm a bookworm), a 2.5 gain ratio. 140 lbs (my weight... gives you an idea of possible operational loading) applied to my 170 mm cranks transfers 374.8 in-lbs of torque. that only requires 32 pounds of force on a 12" chainwhip.

You see where I'm headed with this? you can develop a LOT more torque with the same force if you just use a chainwhip. this is good, because you DON'T want to exceed this while back-pedalling.
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