Be careful, be very careful. There is a reason PVC pipe is not allowed
for distributing shop air. People do it out of ignorance or because
money means more than safety to them. Google to see some pix of what
shrapnel damage from exploding PVC pipe can do. Because people aren't
killed first time every time they pressure up PVC pipe doesn't mean it
isn't dangerous.
I bought a tennis ball launcher as a birthday gift for a friend. If I
recall correctly it is called a K-9 Kannon. It is made of plastic and
uses large rubber bands for launching the ball, ostensibly for a dog to
retrieve, hence the name. There are several models ranging in cost from
about $7.50 to $20.
Patrick NJ5G
On 2/19/2017 10:42 PM, Mickey Baker wrote:
Being the cheap ham that I am, I built one from the plans on that site, but
a but a bit more robust.
I can launch a standard new tennis ball 250 meters at a ground level target
and much taller than anything around here. I have ropes in 70 foot pine
trees supporting wire antennas.
I hate the fishing reel that I'm using, so I should probably upgrade the
reel.
There's some margin for safety built in, but I wouldn't inflate more than
the recommended pressure with a PVC pressure vessel. A failure could be
dangerous.
Be safe, a tennis ball could hurt someone!
73,
Mickey N4MB
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