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CRAZY'S first and last

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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CRAZY'S first and last

Unread postAuthor: crazyfreak0075 » Tue Mar 13, 2007 12:42 pm

Barrel: 28" SCH 40 1 1/2"
Chamber: 18" SCH 40 3"
Ignition: lantern sparker (hey what the heck $2)
Standard fuel like carb cleaner, you know the usual propellents



Yeah im pretty proud of this gun, what can i say its a first combustion for me had to paint i wasn't soo good with the primer. I built it last year in the winter and here in Michigan it just started to warm up so im gonna shoot it off. Its probably the last lantern sparker ill do. Damage pics should be coming maybe a video.
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Unread postAuthor: risto » Tue Mar 13, 2007 4:06 pm

yeah, i wouldnt suggest lantern sparkers.

so when does the onboard propane-metering, the built-in handle, the chamber fan, the stun gun ignition, the laser sight, the rifle scope, the caution tape and neon underglow get put on? :D

im just kidding! looks like a great first gun!
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Unread postAuthor: spudthug » Tue Mar 13, 2007 7:26 pm

in image 439 what the hell is in the end of the barrel...??? btw nice gun
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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: Mr.Russ » Tue Mar 13, 2007 7:32 pm

thats the back of the screw in end cap i think
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Unread postAuthor: crazyfreak0075 » Tue Mar 13, 2007 7:47 pm

Ummm... yeah thats the back of the screw cap, i think you might be able to see the lantern sparker too.
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Unread postAuthor: schmanman » Tue Mar 13, 2007 7:53 pm

It was really warm here today (I'm in michigan too). at one point, it was like 75*, and all the snow melted! yay!
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Unread postAuthor: Kenny_McCormic » Sun Mar 18, 2007 4:32 pm

thats a nice gun i really like the paint job makes it look militaryish
i didnt know that alo of you guys live in michigan what county im in jackson
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Unread postAuthor: crazyfreak0075 » Sun Mar 18, 2007 4:36 pm

Ingham, Lansing to be specific. I only know of two people now that live in Michigan though. But you say there are a lot, who???
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Unread postAuthor: LGM » Sun Mar 18, 2007 4:41 pm

There are a couple other people that have mentioned living in Michigan. Nice clean first gun.
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Unread postAuthor: Flying_Salt » Sun Mar 18, 2007 7:01 pm

spudthug wrote:in image 439 what the hell is in the end of the barrel...??? btw nice gun


It looks like he sanded it down to cut potatoes better.

Nice gun, looks almost the same as my first, except you did a better job on your ignition system. :roll:

I live in Texas, and it's hot all year round. HA!
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Unread postAuthor: tater36 » Wed Mar 28, 2007 8:28 pm

I am looking to build a cannon like this and I was wondering whether to use abs or pvc, which is better?I am also wondering about the "chloride" part of pvc cause when it burns its pretty much poison, is that generally a problem with simple cannons like this?
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Unread postAuthor: Seakros » Thu Mar 29, 2007 6:28 pm

I used ABS for my first pneumatic gun and it works perfectlty fine... Mind you i have only put in 32 PSI at the max, so i cant guarantee that its not gonna explode with more pressure..

Although I think ABS is not brittle as is PVC when it bursts
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Unread postAuthor: noname » Thu Mar 29, 2007 6:35 pm

Never use ABS in pneumatics, in combustions, it's fine. We've been over this countless times before.

Great first gun, crazyfreak.
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Unread postAuthor: Seakros » Thu Mar 29, 2007 6:42 pm

Yea.... but i dont really mind it breaking.... its my first....

Im just saying ABS will just tear along the side if it breaks..... It wont hurt you....

Can u give me the forum on which they've debated the comparison plz? I've been looking for some the past 15 minutes....
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Unread postAuthor: keep_it_real » Thu Mar 29, 2007 6:50 pm

You don't even need to see the comparison. ABS can't hold much pressure for long periods of time. If you value your eardrums, I would consider changing to pvc for pneumatic.
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