Cog affecting chain tension for some reason
09-02-23, 07:53 AM
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Cog affecting chain tension for some reason
I was trying to learn to skid stop yesterday and I felt a big backwards jolt as I actually did it, I got home and checked what it was, and the cog seems to be not centered? It's the best way for me to describe it. Because of that it makes the chain be tight in some places and very loose in others while pedalling, I was wondering if it was a case of just taking off the lock ring and cog and readjusting them or something? I'm new to fixed gears and their maintenance so please go easy on me
09-03-23, 05:04 PM
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Skidding is not stopping, it is a way to leave a nasty brown stain in your undies though. It could very well be your cog is out of round if it s a low cost cog that is an easy answer then get a proper cog, make sure everything is properly tensioned and bingo you are good. However I would get a brake so you can actually stop in a controlled manner. Slowing down uncontrollably is not really useful in an urban setting or when you are around other people.
09-03-23, 06:06 PM
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Assuming you already have at least a front brake and just want to learn to skid stop for fun---
Confirm that the cog is screwed on fully, at the end of the hub thread. If not, the sudden movement in the cranks you felt might be from the sprocket running back and forth between the end of the hub thread and the not-quite-tightened-enough lock ring.
Also, confirm that the hub threading correctly consists of a larger right-hand thread for the sprocket and a smaller left-hand thread for the lock ring. If the hub is not a true track hub (or double-sided freewheel-and-fixed hub) and the sprocket and lock ring are both right-hand threaded and the hub thread is one continuous diameter, the lock ring does little or nothing to hold the sprocket in place.
Confirm that the cog is screwed on fully, at the end of the hub thread. If not, the sudden movement in the cranks you felt might be from the sprocket running back and forth between the end of the hub thread and the not-quite-tightened-enough lock ring.
Also, confirm that the hub threading correctly consists of a larger right-hand thread for the sprocket and a smaller left-hand thread for the lock ring. If the hub is not a true track hub (or double-sided freewheel-and-fixed hub) and the sprocket and lock ring are both right-hand threaded and the hub thread is one continuous diameter, the lock ring does little or nothing to hold the sprocket in place.
09-06-23, 04:19 AM
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You most likely stripped the threads on the rear hub and potentially dented it.
Take off the rear wheel the locking and the cog, see it even comes apart by unthreading or just falls apart when you take of the lockring.
Next time make sure everything is tightened down. Look up the rotafix method
Take off the rear wheel the locking and the cog, see it even comes apart by unthreading or just falls apart when you take of the lockring.
Next time make sure everything is tightened down. Look up the rotafix method
