Originally Posted by
carleton
Yeah, those are hot. And yes, they use 27.2mm seatposts. Largest size is 55cm. They use an eccentric bottom bracket which can be used to change the angles of the bike. This is pretty sweet.
I wonder how an eccentric is done that doesn't slip under sprint torque. The guys I've known who have used them for chain tension all seem to have had issues at one time or another.