Breech design question

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
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Combustion Monkey
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Joined: Sun Jan 11, 2009 3:01 pm

Tue Jan 27, 2009 3:36 pm

I agree with the camlock setup. I use it to great effect on my cannon. I actually separate the combustion chamber several inches from the back to allow the barrel to extend 6 inches or so out of the breach. With this setup the spud doughnut left after cutting doesn't have to be fished out of the chamber. I can post pics if desired.
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