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A place to ask general spud cannon related questions.
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Unread postAuthor: spudthug » Wed Jul 18, 2007 9:25 pm

calcium carbide isnt a solid propellent..it turns into acetylene when mixed with water...there were a few calcium carbide cannons on here...

i left some nice comments on there :wink:

http://www.youtube.com/watch?v=tMjR8x1sJOc&NR=1

wow..abs and acetylene....
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Last edited by spudthug on Wed Jul 18, 2007 9:29 pm, edited 1 time in total.
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Unread postAuthor: Jumpin Jehosaphat » Wed Jul 18, 2007 9:29 pm

spudthug wrote:calcium carbide isnt a solid propellent..it turns into acetylene when mixed with water...there were a few calcium carbide cannons on here...

i left some nice comments on there :wink:


d'oh! I'll admit defeat on that one... Forgot to do my homework on that one.
All the same acetylene is nothing to mess around with, but it's ok to talk about here.
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Unread postAuthor: spudthug » Wed Jul 18, 2007 9:30 pm

yea.. i editted my post...watch that vid...
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: Jumpin Jehosaphat » Wed Jul 18, 2007 9:48 pm

ABS and Acetylene... talk about playing with matches.
Worst thing about that video was that it was built by a teacher...
I think I may email him or something. Thankfully nobody was hurt in the video.
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Unread postAuthor: frankrede » Wed Jul 18, 2007 9:56 pm

I think that the recoil system was awesome on the carbide cannon.

Hmm 12ft of 6" abs in my backyard, calcium carbide cannon hear I come!
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Unread postAuthor: paaiyan » Wed Jul 18, 2007 9:57 pm

As dumb as it was to build an acetylene cannon out of ABS, you have to admit, that is one awesome professor. I like that one girl screaming, it was funny.

Frank, if you make a carbide cannon out of that, I think I might just have to come over there and hug you, cause you'll be my hero.
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Unread postAuthor: frankrede » Thu Jul 19, 2007 1:15 am

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Last edited by frankrede on Thu Jul 19, 2007 1:33 am, edited 1 time in total.
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Unread postAuthor: MrCrowley » Thu Jul 19, 2007 1:26 am

On one of my cannons some 260psi rated PVC blew at 100psi, me and two friends were within 2feet of it when it blew up at waist height and no one got hurt, not even a scratch. :shock:
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Unread postAuthor: lukemc » Thu Jul 19, 2007 7:51 am

i have a carbide cannon. i never bothered posting it because i new there would be some discrepancy over calcium carbide. its pretty cool because you can pour out somebangsite
hold a lighter up to it and nothing will happen however when you mix it with water in a cannon it makes a very nice boom and shoots crab apples pretty far
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Unread postAuthor: veginator » Thu Jul 19, 2007 8:31 am

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Unread postAuthor: iknowmy3tables » Thu Jul 19, 2007 8:59 am

well BCarms our offical store and one of our moderators sells calcium carbide so I think its alright
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Unread postAuthor: altxf4 » Sun Jul 29, 2007 4:15 pm

Our hobby straddles a very thin line in the eyes of many. What we are tying to avoid here is any more possible negative publicity, so we can have fun with our hobby in peace and safety!
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Unread postAuthor: Pilgrimman » Sun Jul 29, 2007 6:19 pm

@altxf4

Well said. :D I left a nice comment on a google vid of a guy getting shot MULTIPLE times with a spudgun. It's morons like that that make this hobby so controversial. :evil:
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Unread postAuthor: iPaintball » Sun Jul 29, 2007 7:04 pm

Spudbud, are you incapable of using your brain? Calcium carbide is most certainly not a solid propellent, and I'm tired of people acting like they know what there talking about and saying it is. All it does is release acetylene gas, which is a gaseous propellent. A solid propellent would mean the solid actually deflagrates, wich CaC3 does not.
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Unread postAuthor: chaos » Sun Jul 29, 2007 7:53 pm

@iPaintball; i believe some of your information in the post above is wrong

iPaintball wrote:Spudbud, are you incapable of using your brain? Calcium carbide is most certainly not a solid propellent, and I'm tired of people acting like they know what there talking about and saying it is. All it does is release acetylene gas, which is a gaseous propellent. A solid propellent would mean the solid actually deflagrates, wich CaC3 does not.


Calcium Carbide: CaC2

not CaC3 like you said.

i know you ment to say CaC2 but yer ya know wrong information can sometimes confuse people that don't know a lot about these kinds of things
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