Chamber to Barrel Ratio for Propane cannons

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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MisterSteve124
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Sun Nov 05, 2006 7:54 pm

I read somewher that if you want to build a propane cannone you should use .8:1 C:B Ratio. I was just wondering if this is true? If not then I'll just stick with 1.5:1
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Tater Salad
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Sun Nov 05, 2006 8:31 pm

yes this is true. Some people might say that .6:1 is better but thats for efficiency. The better the ratio (.8:1, 1:1) the louder it becomes and the more energy is wasted. 1.5:1 is best for aerosol fuels.
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MisterSteve124
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Sun Nov 05, 2006 9:04 pm

ok anyone else? sorry but I don't really trust someone with only 1 post.
SpudBlaster15
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Sun Nov 05, 2006 9:17 pm

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