Summary

This is an attempt to fix the HP85 tape drive capstan wheel with 3D printed parts.
It's a solid rim (the gray part) and two elastic tires from TPU (the black parts).
To install this, you need to cut a M4 thread into the drive shaft (take if off the motor for this).
Assembly:

• strap one of the tires over the hexagonal post pointing down, covering the grey disc
• strap the other one back to back so that it points up to the thread direction
• screw the thing on the metal drive shaft and tighten it up.
• optionally glue it down