it's a clever bodge to limit the problems otherwise inherent in a simple single pivot suspension design unworkable at the time as shocks were total garbage
Looking at it...is it a URT? The BB can't be attached to the swing arm or you'll lock your suspension out when you stand on the pedals. Or is it? Every time I look at it I can't really tell what's going on.
It's a URT with an EBB which is free to rotate, with the rotation controlled by a dog bone joining the EBB to the downtube. It partially compensates for the BB movement otherwise inherent in URTs. I have no idea why they think it's an improvement on a single pivot swinging fork.
Looking at it...is it a URT? The BB can't be attached to the swing arm or you'll lock your suspension out when you stand on the pedals. Or is it? Every time I look at it I can't really tell what's going on.