[mfewtrail]

Originally Posted by itb76

The Chicago Electric unit does the job, the drawbacks are the rpms slow down with added load, it does not keep the rpm constant, and the speed adjustment goes from 1 - 6, there is not an rpm indicated (makes sense, since it varies)..

Here's a quote from an old post here about the speed settings on the chicago electric rotary.

Originally Posted by Pats300zx

Hope this helps.

Here goes:
1= 1000
2= 1400
3= 1800
4= 2200
5= 2600
6= 3000

The dial, however, is variable, meaning 1.5= 1200, 2.5= 1600, etc. Hope this helps out a bit