i would've assumed the same (cog/lockring too loose) but for the fact that the hub looks like it'd been ridden as assembled for some miles...
still, i don't see how the chain hopping off would cause such a disaster..
something must've failed before the chain came off...
(also i wonder if lacing the wheel in the other direction would've kept the chain from jamming so badly)
Originally Posted by LóFarkas
I'm inclined to believe in a different story: You lockring/cog assembly wasn't tight enough or the threads on 1 or more of 3 parts was crap/buggered by subpar user => cog came off => chain came off => carnage.
A simple dropped chain causes a minor scare and zero damage to lockring threads and such.