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@nicetrees
Something like this keeps happening to my bike. I got the local shop to tighten up the sprocket and lockring for me so thats not the issue.
I've had a look at the hubs thread an it appears to be slightly damaged at the end of the sprockets section. Would this account for the lockring and sprocket flying off? I would have thought the lockring would have still done its job if its thread was intact?
Any suggestions on what might have caused this in the first place?
My hub is a suzue basic and sprocket is an alloy token 15T. Is it possible that the sprocket is the wrong diameter for the hub, or are these sizes standard?