[Shop-talk] 80psi to 160psi without power?

[Randall]

> Anyone know how a system like this can work?
> 
> http://www.dickmantires.com/air_pressure/air_pressure.html

The details say "The pressure increase is attained using mechanical
advantage inside the booster."

That makes me think it's a pump & compressor of some sort, like perhaps a
1.4" diameter piston driving a 1" diameter piston.  For example,
http://tinyurl.com/ktxzca

Randall