Originally Posted by
mdi
Anybody think about how a "vibrating" (wobbler) tumbler works? Usually a Weight is placed on the armature shaft to throw the spring mounted motor out of balance, causing a wobble. Most motors aren't designed to be run out of balance and soon fail. The design is pretty much a "designed failure". Some motors will last quite a while as noted by user's comments "My Fudrus 1300 has worked for 30 years", but it is a poor design.
If I were to design a wobbler brass cleaner I would mount the motor solidly, and run power to an out of balance shaft connected to a bowl; motor armature runs true, in balance, bowl axle out of balance, wobbles...