Originally Posted by
HarborBandS
Check out the video on the Cannondale site. Looks like lots of movement! Way more than IsoSpeed, which you hated.
I wish they had just made a Synapse-like frame with more tire clearance.
Super-thin seat tube flex zone at the bottom end -- just like Trek Isospeed. Bearings freeing up the seat tube junction (this time with the seat stays) -- just like the Trek Isospeed. Very well designed to permit maximum flex in the rear triangle.
They are clearly marketing the "BOING!" as a selling point. That helps people like me, who think the rear triangle needs to be stiff to be efficient, stay away from bikes we wouldn't like anyway. (I always rode a hardtail mountain bike, too.) And it helps those who are looking for flex find their perfect bike.