Originally Posted by
the sci guy
hearing a rattling sound when I go over bumps/potholes - I think it's the chain rattling on the cog? does this mean the chain is too loose? Because I'm pretty sure it's not. i hadn't had this issue with a previous chain. If i look down while riding and see the chain sway side to side a little going over bumps - need to tension?
My chains flop around over bumps if they are not under pedaling tension. Loose is good. Too loose is not. If you can't manually force it to derail, it won't derail when riding.