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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 11-02-09, 10:37 PM   #1
hydromorpher
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cog wear

how long does a cog usually last in terms of the teeth wearing down?
I want to know because I have a 48x17 gear ratio with a surly cog and I wanted to loctite the cog onto the hub and didn't want to have to buy new rims that soon. Thanks.
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Old 11-02-09, 11:26 PM   #2
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that's the dumbest thing I've ever heard of. Why not just get a lockring and ditch the loctite?
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Old 11-02-09, 11:29 PM   #3
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Just tighten it down correctly and you won't have to destroy your hub.
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Old 11-02-09, 11:52 PM   #4
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that's the dumbest thing I've ever heard of. Why not just get a lockring and ditch the loctite?
I forgot to mention i stripped my lockring threads and am loctiting the cog and lockring. Can someone just give me a straight answer?
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Old 11-03-09, 12:15 AM   #5
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How many miles do you ride/week?
Do you maintain/clean/replace your chain?
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Old 11-03-09, 12:16 AM   #6
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I forgot to mention i stripped my lockring threads and am loctiting the cog and lockring. Can someone just give me a straight answer?
Ah. Well then, I'd say rotafix it on the freewheel side (assuming there is one that way you can get a bottom bracket lockring on there too), loctite, and pray. Just make sure to keep your chain clean and lubed and it should be fine for a long time to come.
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Old 11-03-09, 05:13 AM   #7
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I have seen suicide hubs on the web with BB lockrings. I think it's a good idea as more threaded contact area the better. But you should put on two brakes, as I am sure you can rota-remove the cog even at the worst possible moment. ... Actually if you go that far, slapping on a freewheel might be more satisfying choice.

Come to think of it that's a clever idea to get extra mileage off of stripped hubs avail at junk stores. Do people do that?
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Old 11-03-09, 05:47 AM   #8
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OP: is your hub one-sided only, or are there freewheel threads on the other side?
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Old 11-03-09, 05:47 AM   #9
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Replace your chain at the appropriate time, and you should be able to get many thousands of miles out of your cog. YMMV, depending on riding conditions. The dirtier things are, the faster it will wear.
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Old 11-03-09, 09:25 AM   #10
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If you run brakes, you could just rotafix the cog on using grease.
As long as you don't skid you won't spin the cog off.
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Old 11-03-09, 09:56 AM   #11
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How many miles do you ride/week?
Do you maintain/clean/replace your chain?
abot 100 miles
yes i make sure my chain is in full working order
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Old 11-03-09, 09:57 AM   #12
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OP: is your hub one-sided only, or are there freewheel threads on the other side?
freewheel threads on other side. Is there something I can do?
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Old 11-03-09, 09:59 AM   #13
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If you run brakes, you could just rotafix the cog on using grease.
As long as you don't skid you won't spin the cog off.
True, but one of the reasons I ride fixed is to skid
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Old 11-03-09, 10:00 AM   #14
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Rotafix the cog onto the freewheel side, put a bottom bracket lockring (same thread direction as cog) on, tighten it. Ride around without using any backpressure. Retighten the lockring.

Use a brake for hard stops, periodically check that the cog and lockring are tight, and it should work fine for a long time. Skidding should be fine, but take it easy on the hard skip-skids.
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Old 11-03-09, 10:37 AM   #15
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Originally Posted by hydromorpher View Post
freewheel threads on other side. Is there something I can do?
1. Grease all threads
2. Install cog per usual via rotafix
3. Install BB lockring using an actual lockring tool
4. Go ride

EDIT: Zacked beat me to it. Gotta refresh these threads when I watch half a movie. ANYWAY, if you do it right it's totally reliable. I rode brakeless with a cog set up like this for about a year with zero problems. Thing is, DO IT RIGHT.
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