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  1. #1
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    New chain popping

    I have a Haro f-2 bike( 20") and replaced rear rim with a eastern 9' er cassette and replaced front chain wheel ( front sprocket) with a eastern medusa 1/8 25t. I have broken several cheap chains and have since replaced with a shadow interlock 2 which seems to be a heavy duty chain but the chain makes a popping noise when under pressure ( doing tricks).When just riding it seems to be fine.After inspecting the chain it is not rolling smooth over the rear 9t sprocket.Wondering if i need to get a different type of chain for this setup. Thanks.

  2. #2
    Senior Member
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    are the rear cogs new too ?

    new chain may do this on worn cogs. just get new cogs

  3. #3
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    Not for sure what you mean by rear cog but i have replaced with a new rear wheel and a 9t sprocket.

  4. #4
    Senior Member
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    Is the rear cog (aka sprocket) intended for a 1/8" chain?

  5. #5
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    Thanks i will call Dan,s comp and find out what type i have replaced with rim and cog ?.There book does not say what type of chain it is for 1/8 or a 3/32. Is there another way to find out if it is for a 1/8 chain. This may be my problem.

  6. #6
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    Is the chain maybe too tight?

  7. #7
    surly old man jgedwa's Avatar
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    a 3/32 chain on a 1/8 sproket is very obvious. The chain will not seat down in the teeth very far at all. You will see a lot of light between the chain and cog. If this was the issue, you would have far more trouble getting the chain to engage than you currently are, I would guess.

    In my experience on fixed gears, new chains and cogs sometimes take a little while to marry. And others have said that some combinations just do not fit well together. I have never found this to be so, since the few that have made noise did wear in well after a little bit.

    jim
    Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
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