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Thread: cog wear

  1. #1
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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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    Senior Member Aries's Avatar
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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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    Gentlemen. ADSR's Avatar
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    Just tighten it down correctly and you won't have to destroy your hub.
    The bums will always lose.

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    Quote Originally Posted by Aries View Post
    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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    Senior Member xxguitarist's Avatar
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    How many miles do you ride/week?
    Do you maintain/clean/replace your chain?

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    Gentlemen. ADSR's Avatar
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    Quote Originally Posted by hydromorpher View Post
    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.
    The bums will always lose.

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    Riding Engineer Tomo_Ishi's Avatar
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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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    Beausage is Beautiful Fugazi Dave's Avatar
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    OP: is your hub one-sided only, or are there freewheel threads on the other side?

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    Senior Member mihlbach's Avatar
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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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    monster
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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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    Quote Originally Posted by xxguitarist View Post
    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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    Quote Originally Posted by Fugazi Dave View Post
    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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    Quote Originally Posted by monsterkidz View Post
    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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    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.
    I have a front brake, but I only use it for slowing or stopping.

  15. #15
    Beausage is Beautiful Fugazi Dave's Avatar
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    Quote 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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