thinking out loud:  So 2# gets you less than 1/2 gallon.  Tank capacity is
about 3-3.5 gallons.  1/2 gallon is not really enough to make this
fill-at-home set up very valuable...  Thinking about the 80% valve being
open on Westy tank, hose going from Westy tank fill port to external
tank.  Propane in Westy tank is vaporizing, absorbing heat, cooling down,
making it harder to vaporize.  How did you measure flow through the
hose?   Are you sure there was no flow?  It might have been slow...
Edward

At 12:55 PM 5/22/2005, you wrote:
>As noted on the tests opening the overflow port on the small tank made no
>difference to flow rate.
>
>Propane weighs  4.2 pounds to the gallon and about 21,500 btu per pound.
>
>http://tactical-bus.info/propane/
>
>jimt