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Thread: Don't be me.

  1. #1
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    Don't be me.

    I've had a very random popping noise since the day after Christmas on my bike. Long story short, I assumed it was my press fit bottom bracket.

    I replaced the bb and the sound was still there. I proceeded to spend half of the day trying a dozen different things with no success. I finally tried putting a chain whip on my cog to see if the sound was in the wheel or on my frame, and found it had something to do with the wheel.

    The chain whip felt weird going on the cog so I replaced it. Sound was gone. I guess 18 months is the life for a Wolf Tooth steel cog.

    Moral of the story, press fits suck, but check the obvious things first.

    Don't be me.

  2. #2
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    I think a lot of noise gets blamed on PF BB that shouldn't be...

  3. #3
    Ahhh the pain....
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    Surprised you wore it out... if the material is the same as what King uses, they last a long time. I have flipped them since they are symmetric to even out the wear.
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  4. #4
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    I could have flipped it, but elected to replace it entirely since I've been having issues.

    I was kind of surprised myself. It doesn't look overly worn to me...
    Attached Thumbnails Attached Thumbnails Don't be me.-20180113_120222.jpg  


  5. #5
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    I'm a little guilty of this too. I tend to let inspections go on the SS compared to the geared and run a chain longer than it should. When the reality may be that since I mash more on the SS, I should be paying more attention to my drivetrain.

    You could probably flip it, but perhaps you should file down the rounded edges beforehand.
    I don't know why,... it's just MUSS easier to pedal than the other ones.

  6. #6
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    Yeah, that looks pretty worn to me. Defiantly should flip or replace it before the burrs start developing. Depending on what chain you are using and how good your chain line is the burrs will prevent the chain from seating on the cog until it is forced down past the burr and then will impede the release of the chain both of which can be noisy. I would bet the chain is at the end of its life too.

  7. #7
    No known cure
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    Time to upgrade to a Niner Ti cog
    Ripping trails and tipping ales

  8. #8
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    Quote Originally Posted by Vader View Post
    Time to upgrade to a Niner Ti cog
    Yup.....6000 miles on mine and it still looks nearly new.
    I resolve to constantly assert my honest opinion on anything and everything - whether it is requested or not.
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  9. #9
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    Quote Originally Posted by mtnbikej View Post
    Yup.....6000 miles on mine and it still looks nearly new.
    Interesting... I have always wondered if they were worth it. I have never used anything but the Surly cogs. May have to spring for a Ti.

  10. #10
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    Quote Originally Posted by mtnbikej View Post
    Yup.....6000 miles on mine and it still looks nearly new.
    God dang! I've always overlooked Ti as an overpriced, overhyped metal but it is hard to argue with 6 times the life of my Wolf Tooth.

    I may have to try one.

  11. #11
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    Niner Ti Cogs are on sale now for $77. Sounds like the time to buy. Might have to pick one up.

  12. #12
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    I went with a niner ti on a bike I built recently. Inspected it last weekend, and after around 500 miles I can't see any signs of use.

    Their ti cog is an entire kit with spacers and lockring. Wish they'd sell just the cog.

  13. #13
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    Even steel cogs will wear faster when the chain stretches. What are you using for a chain? And did you replace it when you replaced the cog?

  14. #14
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    I use Chris King and never had one wear out as of yet.

  15. #15
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    Also curious about what chain was used.

    I check my chains often, and I bought reinvested in steel cogs recently so I can flip them.
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  16. #16
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    I had a similar issue, ignored it for several months...turns out the carbon crank arm was cracked and was making a popping noise. This of Corse is after replacing ebb bearings and ring/cog/chain. Love my $$

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