"Don Foreman" wrote in message
...

[...]

I am trying to visualize how to get a big plastic bowl to shake at 1700
Hz with a motor cannibalized from a drill press :-)

That'll require some gears. 1700 Hz is 102,000 RPM.

Please explain.

The standard frequency of these vibrating tumblers is either 1700 or 3000
vibrations per second (Hz). Are you saying their motors run that fast? I
thought the unit shakes once for each revolution of the eccentrically loaded
shaft.

--
Michael Koblic,
Campbell River, BC