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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A-98
- Corporal 5
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- Joined: Thu Apr 27, 2006 7:41 pm
- Location: Santa Barbara, CA
Mon Jan 22, 2007 12:13 am
thats pretty..ghetto.
ive never built a nice ghetto gun...they always look like crap....so i sacrifice them by burning them to a crisp
There are rules, and then there are hundred dollar bills.
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zeigs spud
- Corporal 2
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- Joined: Tue Apr 04, 2006 10:39 pm
Mon Jan 22, 2007 12:26 am
ha ha yea, ghetto cannons usually don't look great. but they are always one of the best words ever...CHEAP!!! lol
(if you noticed the little blue spot behind the barrel in the chamber thats a smaller extended piece of copper that i put there to latter i can convert the cannon into a cheapy hybrid and be able to put on a tin foil burst disk)
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zeigs spud
- Corporal 2
- Posts: 657
- Joined: Tue Apr 04, 2006 10:39 pm
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zeigs spud
- Corporal 2
- Posts: 657
- Joined: Tue Apr 04, 2006 10:39 pm
Mon Jan 22, 2007 3:39 pm
uhh idk the barrel size i just kinda took some copper pipe off my dads workbench lol. i guess i will measure it later and post it.
oh yea i shot it a few hours ago and it works realy well lol but the barrel is a little long and the coke bottle will expand during fire then start imploding on itself while the marble leaves the barrel then pop back to normal.
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schmanman
- Staff Sergeant 2
- Posts: 1685
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- Location: Michigan,U.S.A
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Contact:
Mon Jan 22, 2007 3:44 pm
nice, so you widened the neck of the bottle by heating and stretching it? one of the nicer ghetto guns I have seen.
Persistence is a measure of faith in yourself
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PneuJose
- Private 4
- Posts: 96
- Joined: Mon Dec 11, 2006 7:13 pm
Mon Jan 22, 2007 3:45 pm
well coke bottles (i think cuz of some exp) that the heat of combustion melts them, theyre better for pneumatics.but nice gun anyways
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zeigs spud
- Corporal 2
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- Joined: Tue Apr 04, 2006 10:39 pm
Mon Jan 22, 2007 4:06 pm
PneuJose wrote:well coke bottles (i think cuz of some exp) that the heat of combustion melts them, theyre better for pneumatics.but nice gun anyways
they melt if you let the flame burn for a period of time in the bottle. mine melt was from my lighter getting to far from the neck of the bottle.
schmanman wrote:nice, so you widened the neck of the bottle by heating and stretching it? one of the nicer ghetto guns I have seen.
yes, i used a lighter to warm it then needle nose plyers (s.p.) to widen it, i had to do the same to the cap i used as well and it is still a tight fit.
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Hotwired
- First Sergeant 3
- Posts: 2599
- Joined: Fri Oct 13, 2006 5:51 am
- Location: UK
Mon Jan 22, 2007 4:29 pm
Plastic bottles have this thing about collapsing if heated too much but I guess if the fuel isn't overdone it'll be fine.
Looks nice'n neat for the price
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zeigs spud
- Corporal 2
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Tue Jan 23, 2007 7:23 pm
Hotwired wrote:Plastic bottles have this thing about collapsing if heated too much but I guess if the fuel isn't overdone it'll be fine.
Looks nice'n neat for the price
yea but on first fire it does it..
...mabey by the time the ammo reaches new the end of the barrel it is sucking air out of the chamber? idk, id on't think it would do that much really.
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zeigs spud
- Corporal 2
- Posts: 657
- Joined: Tue Apr 04, 2006 10:39 pm
Mon Jan 29, 2007 8:47 pm
srry bought dub post but it's been a while, anywho i'm sad, my cannon is dead. i let my friend fire it around and it was bringht so we didn't see the flame still buring in the bottle and well it's now a pan-cake.... :cwm10:
thats nicer than all of my geto guns. what seise is the barrel ?
