The foam in Sensicore golf shafts does nothing but support a plastic device
that looks like a soda straw which actually does the dampening by vibrating
itself at a similar frequency and canceling out the shafts vibration.
The problem with Sensicore, and why some golfers don't like it , is it adds
so much weight to the golf shaft. Probably same problem for us if we used
it in airplanes.

(My brother runs a golf store)

tommy s