Originally Posted by
svtmike
I think I understand where your're coming from with this. Although the differences in radial deflection is nearly the same (and presumed to be infinitesimally smaller than what we can sense), what isn't the same is which vibrations are transmitted by the structure. A structure that transmits the road buzz is perceived to be stiffer than one that does not.
Stiffness is proportional to resonate frequency is the point. That piece of paper Banzai spoke of is the essence that he dismisses Its the maginitude of a piece of paper vibrating at a high versus low frequency that telegraphs more vibration...small amplitude, high frequency acceleration/deceleration into the rider.