[Shop-talk] single vs. dual stage compressors

[Randall]

Randall wrote :
> In theory you could
> change that by using a variable speed motor (or 
> transmission), but I've
> never heard of an air compressor that does so.

Oops.  Here's a discussion of just such an arrangement, saying it's becoming
popular (with much larger compressors than we are discussing)
http://www.plantservices.com/articles/2006/278.html

Randall