It occurred to me the current damper is not working as well as it should.
Rubber is just as incompressible as hydraulic oil and the current
rubber dampers are completely enclosed in the current design.
There is no room for them to distort and absorb the shock.

I think we need to copy the motor cycle style torque damper.
Making them round makes no sense. They should be more or less
cubes of rubber in housing large enough to distort.

I am working on a 3D for a new design. It will be similar to
this Yamaha design. We may be able to buy the rubber parts
from a motor cycle parts seller.

Paul Lamar