ABS with Metered Propane

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.
Novacastrian
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Fri Sep 21, 2007 10:10 pm

Adding a burst disc would have very little effect on increasing the pressure spike in a normal combustion :?
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noname
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Fri Sep 21, 2007 11:05 pm

Makes it one hell of a lot louder though. :P
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Fri Sep 21, 2007 11:14 pm

noname wrote:Makes it one hell of a lot louder though. :P
Agreed :lol:
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MikeNice
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Fri Sep 21, 2007 11:24 pm

very agreed . . . very loud . . .
Canadian Spudder
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Mon Sep 24, 2007 6:44 pm

Would using a 4" chamber vs. a 3" chamber effect performance? For example using a 4", 12" long chamber instead of a 3", 24 " long one.
SpudBlaster15
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Tue Sep 25, 2007 1:40 am

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 5:50 pm, edited 1 time in total.
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psycix
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Tue Sep 25, 2007 10:08 am

I think a burst disk is useful on combustions wich are long and small diameter chamber. This is because the pressure is builded up more slow in those chambers (slow combustion rate). The disk will hold it for some time to delay the release and allow more pressure to be builded before the projectile starts moving.
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