RE: [CAD_CAM_EDM_DRO] OT: Cubic Feet in a Compressed Gas Cylinder?

To everyone that has posted answers on this thank you.

The gas I am dealing with is helium and the purpose is for a variety of my
hobby pursuits. My primary use at the moment is filling small weather
balloons to use when flying indoor model planes. The balloon is put on a
fishing line and used to steer the craft when it is heading for a wall or
girder. No real tall ceilings in Denver, but you would be amazed to see
people steering a 22" wingspan plane that is at 140 - 180 feet (we fly in
field houses, dirigible hangers, or any other large open building we can get
access to). I wanted to understand how many balloons I could fill if I had a
particular pressure in the tank. The other question dealt with the idea that
I may want to transfill a smaller cylinder at the large cylinder is a little
much to take to a site with me. Wanted to get an idea of how large a
cylinder I would need to be able to carry enough gas for I balloon at a
pressure that is low enough to be able to fill direct from the cylinder
without using a regulator.

If anyone want to learn a little more about this indoor flying sport go to:
http://www.indoorduration.com

Thanks again to everyone, you have all been a big help.

Tim
[Denver, CO]