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Old 12-27-07, 11:34 AM   #1
stillrunning15
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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.
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Old 12-27-07, 11:39 AM   #2
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are the rear cogs new too ?

new chain may do this on worn cogs. just get new cogs
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Old 12-27-07, 11:52 AM   #3
stillrunning15
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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.
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Old 12-27-07, 12:14 PM   #4
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Is the rear cog (aka sprocket) intended for a 1/8" chain?
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Old 12-27-07, 12:27 PM   #5
stillrunning15
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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.
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Old 12-27-07, 12:37 PM   #6
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Is the chain maybe too tight?
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Old 12-27-07, 12:55 PM   #7
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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.

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