"Ignoramus32374" wrote: (clip) I will use a used tire as the rotating
vessel. (clip)
^^^^^^^^^^^^^^
Would you be interested in a simpler, totally different way to use a tire?
Mount a V-belt pulley your gearmotor shaft, and just hang the tire on the
pulley by one of the beads. By sizing the pulley properly, you can get RPM
in a suitable range. If the tire hangs too "slanty" by a single bead, you
can always use two pulleys.