you are half right - commercial compressors have an intercooler - makes a
huge difference


"George" george@least wrote in message
...

"Barry N. Turner" wrote in message
...
I'm not a very heavy user of my air compressor. Regardless of the pro's
and
con's, it probably won't make a lot of difference in the long run for
me.
I
had noticed that many of the commercial duty compressors had cast iron
compressors, if that means anything. Maybe aluminum with cast iron
cylinder
inserts is the best way to go. Anyway, my compressor is working fine
for
the time being. I'll just have to wait and see about the longevity
angle.

Barry


"George" george@least wrote in message
...
Aluminum cools faster than cast, which is why many compressors and
air-cooled engines of all flavors with iron inserts have aluminum
cooling
fins.

Though it may have been a buy recommendation for you, it does have its
drawbacks.

It's not longevity. I didn't say that. It's efficiency. The reason you
want fast cooling is it gets you more compressed air faster. Warm air is
less dense, remember? Suck into a warmer cylinder and you start out with
less.