WOOD combustion, yeah, you heard me...

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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Eddbot
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Sat Jan 19, 2008 4:07 am

ok, as everyone knows many guns on here originate from boredom, while lots of you have a bunch of extra parts and pipe lying around to be used, i don't, so i improvised.

the combustion chamber is wood, the cleanout cap is actually a little door, it swings on a hinge and uses a lock(i forget the name, it's the slidey kind), and a bent piece of metal to keep the door shut, the barrel is 1 inch sch 40 with about a million wraps of duct-tape to increase it to a threaded 2 inch(i think) to 4 inch adapter, then i hot glued that onto the front of the chamber, i went a little crazy with the hot glue, covered everything, oh well it could only help :roll:
sorry bout some of the pics being kinda blurry, i was cold, tired, hungry, and i had to pee
pics:

whole gun
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top view
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closer top view
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side view
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lock
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back, door closed
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back, door opened
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left side/door hinge
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hot glue
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no damage pics 'till tomorrow (i hope)

edit: OOOOWWOWOOWOWOWOWWOW...there aren't any smilies for pain, i tried it a little while ago, tried static guard, that didn't work so i used hairspray, when i finally did fire, the back end wasn't sealed up enough and i burnt my finger, ow pain but it did leave a pretty cool scorch mark on the inside if the door

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i need square o-rings :happy11:
Last edited by Eddbot on Sat Jan 19, 2008 3:32 pm, edited 1 time in total.
:edfirst:
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Carlman
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Sat Jan 19, 2008 4:15 am

umm, yea, err...interesting :D

what will we thing of next?
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Aussie spudders unite!!
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jackssmirkingrevenge
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Sat Jan 19, 2008 4:23 am

nice one, love the warning labels :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
Tsukiten
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Sat Jan 19, 2008 5:19 am

Well THAT gives a new definition to the term 'ghetto' :shock:
Pretty much looks like a little tank-like thing and the little soldiers are supposed to enter trough the *door* :D

Off-Topic: Square guns aren't as safe to use since the corners have to bear more pressure right? (=might blow off in some way or something) Please correct me, if wrong.
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jackssmirkingrevenge
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Sat Jan 19, 2008 5:25 am

Tsukiten wrote:Off-Topic: Square guns aren't as safe to use since the corners have to bear more pressure right? (=might blow off in some way or something) Please correct me, if wrong.
precisely why most pressure vessels are cylindrical, though in the case of this combustion I wouldn't be too worried.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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experament-u2
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Sat Jan 19, 2008 6:11 am

one day i hope to see a combustion made completely out of wood and has a rectangle wood barrel :wink:

i like the little door and lock to
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Hotwired
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Sat Jan 19, 2008 9:36 am

Heheh :D

You can knock up a combustion from some decently thick cardboard tube with no worries (unless it gets wet...) so wood is no problem.

Hot melt glue FTW :P

My first cannon was a steel broom handle with a garden hose spray as the valve and and another garden hose fitting with a snaffled tyre schrader to fill it.

Guess what held all those together :wink:
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bigbob12345
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Sat Jan 19, 2008 9:49 am

Haha
I like this idea of a wood combustion
Maybye Ill try it today or tommorow
Should be fun :D
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Eddbot
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Sat Jan 19, 2008 11:47 am

well, i didn't have cardboard either, otherwise i would have made something out of a tube, but i didn't. eventually i might get some quality wood, make a nice big chamber, and spend a long time sanding the inside of the barrel to make it real smooth

edit: i'm not worried about it being square, after i made the main body, before i put anything on it, i just dropped it on the ground and kicked it around for a little while (ghetto pressure testing) :D
:edfirst:
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pizlo
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Sat Jan 19, 2008 11:54 am

you ghetto stompt it? Dude I love it, a bit more advanced that my cardboard one, you have inspired me to go test out my gun with a square chamber (cardboard box.) I took a box and put 10 half inch barrels into it, and Im gonna fire it with my matchhole technique. (off topic)

isn't it really fun just to make something from what you have lying around, especially when it works.
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Eddbot
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Sat Jan 19, 2008 12:05 pm

that's the thing, i don't know if it's gonna work, i'm not worried about the corners bearing too much pressure, it's the hot glue, i don't know if it can hold the pressure between the box and the adaptor, but we'll see
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pizlo
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Sat Jan 19, 2008 12:13 pm

I think that will all depend on your ammo, if you shoot a pingpong ball there will be no problem because the pressure will not build up. also If you are nervous I would rap it in duct tape around the ends.
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Brian the brain
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Sat Jan 19, 2008 3:14 pm

I think the barbecue lighter is overkill..This thing should be lit with a match hahaha


Nice one!! I laughed my ..donkey...off!!
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Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Fnord
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Sat Jan 19, 2008 6:24 pm

how many spuds would a wood gun chuck if a wood gun could chuck spuds
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pizlo
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Sat Jan 19, 2008 7:13 pm

If you want some fun put some of those plastic army figure in the chamber and then REALLY load on the hiarspray. take some picks when they come out:)
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