Originally Posted by Ya Tu Sabes

But with the thinner cog and the lockring, the torque is applied to the lockring via friction from the turning cog, which is, I think, a less efficient way to do it (sort of like the difference between unscrewing the lid to a jar by grabbing the sides of it (efficient) and unscrewing it by pressing your fingertips against the top of it really hard and twisting (not so efficient)). But, like I say, I'm a lawyer, so I'm better qualified to tell you whom to sue when the cog fails than whether the cog will fail in the first place.