I have a 60 gallon upright air compressor and it seems to run the air
drill fine. I've never seen an electric drill that turned RPMs in the
thousands. My Makita cordless at work might do a few HUNDRED RPM. When
I bought my Sioux, it was the highest speed air drill I found at an
aviation tool supply. Oh well, that's life...

Scott


Veeduber wrote:
I love my Sioux drill. Great trigger. Mine only goes 2600 RPM. Seems
to do just fine at that speed.


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Dear Scott,

I don' t want to bust up your romance but I suggest you borrow a drill-motor
that turns at a higher speed and shoot a few holes. You really don't know what
you're missing.

I usta have a B&D 'aviation' drill motor, turned something like 4000 rpm. Wore
it out. Had it rebuilt. Twenty years later it needed another rebuild but the
bull-gear was not available at a price I could afford. Since then I've been
using those cheap Chinee imports that turn 3600 rpm, last just about long
enough for one airplane's-worth of holes, throw it away when it gets noisy.
Air tools are nice but compressing air to drive a drill puts you on the wrong
side of the economic equation here in southern California.

That's a point a lot of newbies miss. Pneumatic drill is a real air hog; takes
a pretty good compresser to keep you working. (On the other hand, pneumatic
riveting hammers or squeezers don't use much air.) If a guy doesn't already
have a big compressor, when you add the acquisition cost to the operating cost
and divide by the number of holes, it represents a significant increase in cost
when compared to using throw-away electric drill motors.

-R.S.Hoover