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Mini Mega Launcher

Built a pneumatic 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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Unread postAuthor: Daemonseed » Sat Jul 22, 2006 8:45 pm

how far can you fling a spud with this thing? and what psi can you get in those tanks?
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actually

Unread postAuthor: LynyrdSkynyrd » Mon Aug 28, 2006 12:30 am

spudshot wrote:a supah valve is the best when it comes to pneumatic valves, joel suprise sells them, he owns and operates http://www.spudtech.com joel wont tell people how a supah works, but its got the quick opening of a diaphragm valve with the full flow of a piston valve. it requires alot of machining, so even if you knew how they worked you couldnt build one without alot of access to tools. it takes joel 118 minutes to put one together. he is working on the megah valve which uses a 4" tee with 3" openings instead of the supah's 3" tee with 2" openings, but he's not selling them to the public yet

there, eleaborated enough?


actually my friends and i have successfully built a pneumatic valve bigger (and better) than the supah with a 4" tee and 3" openings
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Unread postAuthor: LynyrdSkynyrd » Mon Aug 28, 2006 12:36 am

here's a pic if you want...

Image

Image
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Unread postAuthor: Velocity » Mon Aug 28, 2006 9:47 am

Your valve is certainly nice, but is not necessarily "better" than the supah valve. The creator of the supah valve uses all quality parts, has no primer stains, and modifies parts for better aesthetic value. You have used unpressure-rated components (that tee, the cleanout adapter, the cleanout cap, the coupler, and the bushing).

BTW: Many people have built valves larger than the supah valve; making them as well constructed as the supah valve is the real challenge
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Unread postAuthor: DonTheLegend » Mon Aug 28, 2006 7:31 pm

I am one of the friends who worked on this valve, and while i won't claim that it is better, i will say that i think it is just as effective as the Supah. As to the use of non-pressure rated fittings, most of it is double walled, but i won't make other excuses for that. And the primer stains will soon be covered with paint. These photos are about 4-5 months old as well. One more question: how can you tell that the bushing isn't pressure rated?
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Unread postAuthor: Velocity » Mon Aug 28, 2006 8:32 pm

The tee is not pressure-rated, and therefore has very shallow sockets. I can tell that that bushing is non-pressure-rated because it fits into the shallow socket of the tee flushly; if the bushing was pressure rated, it would have a longer pipe part that glues into the tee, and therefore would stick out a bit
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Unread postAuthor: SpudStuff » Mon Aug 28, 2006 9:02 pm

Yes and the cleanout is not pressure rated either
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Unread postAuthor: LynyrdSkynyrd » Mon Aug 28, 2006 10:13 pm

ah, well maybe its not, but we were still able to launch a 24 oz soda bottle full of water about a quarter of a mile at 100 psi
Thats all that counts... right? lol
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Unread postAuthor: SpudStuff » Mon Aug 28, 2006 10:22 pm

some how i doubt that
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Unread postAuthor: LynyrdSkynyrd » Mon Aug 28, 2006 10:28 pm

well we'll have to take pics next time we fire it, its a pretty powerful machine, even though the valves we made ren't pressure rated... however, the whole thing is double walled with sched. 40 pvc so it has some pressure rating to it. the only thing that isn't is the bushings and the tee (which is double walled) so it is of no concern to me. We have had no problem with the function of the valve so far, only the recoil of the cannon firing was our difficulty, and we fixed that by building a recoil system. it may sound crazy, but it works extreamly well.
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Unread postAuthor: DonTheLegend » Mon Aug 28, 2006 10:38 pm

As soon as we finish painting and testing this gun, it will be entered in the showcase contest, and you will be able to see the entire thing. Until then, doubt all you want, but this thing is extremely powerful and is not to be taken lightly. The 1/4 mile shot was verified with a laser rangefinder, but hey, how accurate can that be?
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Unread postAuthor: SpudStuff » Tue Aug 29, 2006 8:46 am

1/4 mile is very hard to achieve. not many people have.
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Unread postAuthor: schmanman » Tue Aug 29, 2006 9:39 am

I have. check it out.

:arrow: my 18 foot cannon
http://www.spudfiles.com/forums/viewtopic.php?p=13615&

here's my piston valve,comstruted totally with pressure rated materials :wink:

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Unread postAuthor: SpudStuff » Tue Aug 29, 2006 6:37 pm

Yes your's is fuck1ng huge and an acception
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Unread postAuthor: schmanman » Tue Aug 29, 2006 6:40 pm

thanks. I think. Is that sarcasam,or somthing
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Last edited by schmanman on Wed Aug 30, 2006 2:29 pm, edited 1 time in total.
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