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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 08-27-10, 11:07 PM   #1
kmac27
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Chain slippage

I've had my bike inbetween 200 and 500 miles and I had my first two chain slips. Both of which happened when I was going down a steep gradient for the bike. I am thinking that it was most likely because I may not have kept constant tension on the chain causing it to "jump" off track. Is this the case or does it need to have the chain cleaned and lubed? Also how often do I need to clean and change lube on a fixie? I'm new to this type of stuff coming from a hybrid bike.
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Old 08-27-10, 11:11 PM   #2
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Your chain slipped and dropped?

Or is it your cog that slipped and you felt like you were "coasting" for a bit?
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Old 08-27-10, 11:27 PM   #3
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My chain completely came off.
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Old 08-27-10, 11:28 PM   #4
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Assuming it's the same thing that's happened to me recently, I'm going to guess it's a combination of your chainring not being perfectly centered/round and/or your pedal stroke not being completely smooth at the high cadence you were at. I suspect this combo results in the chain tension "pulsing" at the right amount & frequency to cause the chain to slip or drop.
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Old 08-27-10, 11:54 PM   #5
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Yea I cleaned my gears today and took off my fenders and it was impossible to take the chain off until taking off the tension of the back tire.
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Old 08-28-10, 03:57 PM   #6
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Originally Posted by six30nine View Post
Assuming it's the same thing that's happened to me recently, I'm going to guess it's a combination of your chainring not being perfectly centered/round and/or your pedal stroke not being completely smooth at the high cadence you were at. I suspect this combo results in the chain tension "pulsing" at the right amount & frequency to cause the chain to slip or drop.

If you had had anywhere near the correct chain tension, neither of these would be a legitimate problem.
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Old 08-28-10, 08:20 PM   #7
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if your chain was too tight, it can cause chain to come off as well right?
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Old 08-28-10, 08:40 PM   #8
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no
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Old 08-29-10, 01:33 AM   #9
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If you had had anywhere near the correct chain tension, neither of these would be a legitimate problem.
If you had anywhere near the full details of my story, I'd consider your statement a legitimate comment.
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