Custom Torsional Dampener

After pondering the dampener overnight, I realized we ("Invenscience" since Invenscience is funding this project) have a sheet of black .750 thick PE. If I model something up quick in Solidworks and then we mill out a few wedges, we can probably replace the dampener in a way that will reliably survive.

Layout where the blue represents the wheel, red represents the hub and black is the dampener wedge

Dampener Wedge- 8 required