On Feb 5, 11:49*am, "Steve B" wrote:
I want to make a noisemaker air tank cannon by cutting off a tall O2 bottle.
I don't want to fire any bowling balls, just create a loud boom for New
Year, and 4th of July. *Would it be better to use gunpowder or Acetylene/O2
mixture? *I am considering of using an inflatable 99 cent ball to block the
barrel, just charge it, insert the ball, inflate, and fire. *Leave it
hanging on a rack when not in use, and call it a bell, in case anyone should
investigate the sound of the report.

Steve

Before you go to all that work, I would make one out of some 4 inch
plastic waste pipe about 3 or 4 feet long. Thread a hole for a
sparkplug and maybe use a microwave oven transformer for the high
voltage. Fill it with acetylene and oxyget and put plastic wrap over
the end and secure with large rubber band.
You can put the microwave transformer close to the cannon and use a
long extension cord so you are not close when you set it off.
Should not take very long to make it and you can see if it is
worthwhile to make something bigger. My guess is that it will be as
loud as you want.

My current cannon is two inch plastic pipe about a foot long. And it
is plenty loud for the grandchildren.


Dan