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Lloyd E. Sponenburgh[_3_]

fired this volley in news:5a2906ad-fe9a-44a7-ac2f-
:

Say, 50% of the airstream as high-pressure supply, and the rest to
drive the booster?

A simple "air amplifier" booster consisting of two cylinders of different
diameters and some valving would do what you want. You only need boost
for the last 20psi, or so, and your tailing volume is small compared to
what it takes to fill the tire.

Pre-assembled commercial versions exist.

I owned an old DeVilbiss air-powered 'airless' paint sprayer that pumps
paint at 1000psi from 80psi air. It consisted of a 2" cylinder direct-
driving a 1/2" pump cylinder, and a couple of end-of-travel valves to
reverse the direction the big one.

Lloyd