Originally Posted by
bonechilling
OT, but I think it's safer NOT to run a lockring, so if something does happen, the cog simply spins off the wheel, and the rider can coast to the pit.
Somehow, I think that the chain would drop, and you'd lock up the rear wheel and end up skidding (best case), or else explode your chain (second best case), or else fall down and wreck your expensive-ass bike (worst case). Not that a dozen other things wouldn't have to be wrong in order for your cog to come off anyways...