Mixing/ventilation fan operation

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.
bennettjackson
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Thu Apr 28, 2011 10:37 pm

i recently installed a fan into my gun but i was wondering approximatley how long to run it for when im mixing the fuel before the launch. also how well anchored in the chamber does it need to be cause mines in there pretty good but i feel like the combustion will blow it out, thanks
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Crna Legija
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Thu Apr 28, 2011 10:41 pm

run it as you fire for the best results.
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bennettjackson
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Thu Apr 28, 2011 10:50 pm

alright thanks, and for the stability? just see how it goes?
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Moonbogg
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Fri Apr 29, 2011 1:23 am

As long as the fan is near the back of the chamber (furthest away from barrel opening) you shouldn't need a super secure fastening of the fan. The air will not suck it out or break it. I secured mine with rubber cement (glue) and my cannon is a 2-3x hybrid. No issues with the fan after well over 1000 shots.
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