"Puckdropper" puckdropper(at)yahoo(dot)com wrote in message
...
"Martin H. Eastburn" wrote in
:

Done all the times.
Just be sure the tanks can handle the pressure and you have plenty of
hose size for air flow.

Adds capacity. If pumped (takes longer) to a higher value than needed
(normal) a larger capacity will last longer before it drops below the
low set level.

You can find tanks in yard sales for this purpose.

Martin


I can confirm this. I've got a 5 or 10 gallon tank that I use for my
model air brush. At 40 psi, it ran out of pressure rather quickly. At
90 psi with a HF regulator set for 40 psi, it runs out of air quite a bit
slower.


Well - not quite Puckdropper, but close. In your case you only partially
charged your tank, so you observed a reduced run time. What the OP was
referring to was adding capacity, assuming a fully charged system. In the
end, there's not a lot of difference, but your case was due to simple
undercharging of your tank. Put in half as much air as you're suppose to -
you'll run out of air twice as fast.

--

-Mike-