MrJ, thanks for the comments. cheers

Do you know if anyone has ever attempted to quantify spring constants in the various foams? I imagine lower density means lower K (constant). I’m curious just the foam. Not including the layup or resins.

You see lots of people saying the board feels dead, or chattery. I read that to refer to the damping. Too much damping won’t have a high enough natural frequency while a chattery board may be under damped for what the rider may be accustomed to.