OK.

To save weight further, do you think some alternative material such as CF, kevlar, or fiberglass could be used for the disks?

Does it make sense to use auto-tire rubber to get extra strength? From the pictures, it seems like the rubber is used only on the outside of the ring, not inside. Is that right? I originally thought it should be on both sides so that the engine can be isolated from the frame entirely.

My ZDZ40 was hard mounted and the noise is very BAD. The nose ring probably will be one of my winter projects.

Thanks again.