Originally Posted by
PeteHski
The Specialized Roubaix has a handlebar suspension on top of the headset allowing 20 mm of vertical travel. The latest version of it is sprung and damped. The original didn’t have the damper. They did apparently test a similar system on the seat post but found that riders didn’t like the way it pedalled with vertical compliance (not surprisingly). So they went with a more typical compliant seat post to provide a bit of comfort. Most modern bikes now have fairly flexible seat posts to add comfort. The D-shaped carbon post on my Defy is notably springy, but because it only defects backward it doesn’t affect pedalling.
I was suggesting that it's the Cannondale Kingpin seat compliance system that should be considered. And I was suggesting to forget about simple handlebar springing. I haven't tested either system.
On second thought, maybe the Specialized 20mm of handlebar springing is the correct amount
.