[TheForge] Compressor ratings

[Dave Brown]

Ray,

Thanks for the info.  It pretty much supports my thinking about the HP 
rating for compressors.  In the back of my head the thought kept rattling 
around that I could replace the motor on one of those small 2HP compressors 
with a 10HP motor and it wouldn't change anything other than my electric 
bill.  But I did realize that it might take a bigger motor to run a 
compressor with bigger cylinders or multiple staged compressor.  Sometimes 
the display unit at the stores make it near impossible to locate the cfm 
delivery information.  I liked Shannell's rough guestimate approach to get 
a feel for a given compressor, but it still leaves a pretty good sized 
margin for error.  But it just might get into the ball park.

Dave

At 09:31 08/12/02 -0400, you wrote:
>Correct! As the true measure of the performance of the compressor, only 
>CFM @ delivered psi is really important.
>
>If you are comparing

<lots of good background stuff snipped>

>So the simple answer for us smaller shop air compressor users is CFM @ 
>delivered psi.
>
>Sorry for the long answer. After spending many years working on large 
>industrial compressors you get ate up with them.
>
>Ray