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MB1

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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MB1

Unread postAuthor: POS » Thu Sep 28, 2006 1:41 pm

My MB1, or Marble Blaster 1.

My first spud gun. It is a pneumatic piston gun, with easy changeble barrel (within 10 sec's). The mounted barrel is breech loaded. It uses reloadable shells. It has a chamber of 1" to 50 cm. The pilote valve is triggered by a ball valve. A pistol grip is welded to the lower side, so the ball valve can be pulled open easily. The barrel has a fortification above the breech, looking like the handle of a M16.

Due to the fact I have a compressor with a max of 7 bar (100 psi), I just shot the gun several times of a thin wooden plate. The marbles went trough. That was a nice feeling :wink: (youi know what I am talking about.)

I realy need to buy a high pressure pump, or make one.

Anyway, here some pics of the gun :

The MB1 in all it's glory :
[albumimg]220[/albumimg]

Me holding the gun, just to give you an idea how big it is. (BTW, I am 6ft20, not 3 ft :wink: )
[albumimg]221[/albumimg]

Changeble barrel pic :
[albumimg]225[/albumimg]

Damage pics :
[albumimg]224[/albumimg]

These are the shells I use :
[albumimg]222[/albumimg]

And again :
[albumimg]223[/albumimg]

Pic of the shell, right one, a cheap one, made mostly out of PVC, to the right, a full copper shell :
[albumimg]226[/albumimg]

Pic of the breach with shell in it:
[albumimg]227[/albumimg]

I am gonne add a self made bipod, which is mounted on my .177 air rifle for the moment. I also am gonne add a sight (probably a scope, got one lying around here)

So guys, what do you think about this first gun ?
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Unread postAuthor: )DEMON( » Thu Sep 28, 2006 1:52 pm

Very interesting set up, I guess you could call it over under and upsidedown.
Great job for your first spudgun, great job as it is. That is quite a big cannon although it looks small. Your breech is inovative. You should enter this in the spudgun build off. :D

*you will get much better quality images if you upload them straight from your pc. Just resize them, they can't be more than 50kb.
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Last edited by )DEMON( on Thu Sep 28, 2006 2:00 pm, edited 1 time in total.
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Re: MB1

Unread postAuthor: COD_FILLETS » Thu Sep 28, 2006 1:55 pm

POS wrote:BTW, I am 6ft20, not 3 ft :wink:


You must be pretty tall.

Nice gun, I like the shell idea.
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Unread postAuthor: POS » Thu Sep 28, 2006 4:08 pm

Damn I forgot, I made a silencer to :
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Attachments
firstspudsilencer.jpg
This is the silencer, lying undher the drill. Forgot to take a pic of it. That's for tomorrow, but here already the silencer itself. It's aprox 1 feet long and 2" thick, filled with steel wool. Works pretty well
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Unread postAuthor: MrCrowley » Thu Sep 28, 2006 4:15 pm

woah thats a pretty sweet gun.nice, you should enter it in the spudgun competition :twisted:
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Unread postAuthor: schmanman » Thu Sep 28, 2006 5:25 pm

wow, 6 foot 20 ? so it's a ballvalve gun, or is it a piston gun? very nice breach system. :D
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Unread postAuthor: SpudStuff » Thu Sep 28, 2006 6:03 pm

It looks to be a piston.

Very Nice Gun!
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Unread postAuthor: POS » Fri Sep 29, 2006 1:54 am

schmanman wrote:wow, 6 foot 20 ? so it's a ballvalve gun, or is it a piston gun? very nice breach system. :D


6.2 is the same as 6.20 and 6.200000 :wink: Whatever.

a ballvalve gun ? Can't you tell what kind of a gun it is, by looking at it :wink: ? It sure is a piston valve gun. What do you think I am ? A newby ? (well I am conserning spud guns, but you get the point ... )

I guess, not that I have been shoting it, that the space between the piston valve and the place where the ammo sits in the barrel is to big. I guess the ammo should be right next to the valve. Now a lot of pressure is getting lost in the "unused part" of the barrel, behind the breech. :cry:

The gun shoort nicely, but not very powerfull. In a straight shot, holdting the gun at 1.5 m from the ground horizontly, is "only" covers 50 yards without hitting the ground. I think that is very poor. It should at lease cover 100 yards horizontly.

Now, I just have a pressure of 7 bar max (100 psi). A gavla chamber with copper parts should at least hold 200 psi, isn't it ? Guess I have to buy me a high pressure foot pump or something.

Oh, and something else I found out. There is no or little point to use a silencer, if you don't silence the exhaust of the pilote valve as well, that gives a pretty loud bang to.

MrCrowley wrote:woah thats a pretty sweet gun.nice, you should enter it in the spudgun competition :twisted:


What competition ?
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Unread postAuthor: )DEMON( » Fri Sep 29, 2006 2:00 am

Here you go: http://www.spudfiles.com/forums/viewtopic.php?t=2746&
It was in the announcements. A lot of us are entering, so should you.
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Unread postAuthor: mark.f » Fri Sep 29, 2006 5:31 am

Unique design... I like it!

You should maybe try compacting the elbow assembly to reduce dead volume.
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Unread postAuthor: beebs111 » Fri Sep 29, 2006 5:39 am

i dont see any pics :(
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Unread postAuthor: POS » Fri Sep 29, 2006 6:13 am

beebs111 wrote:i dont see any pics :(


Look here then, now, 29.09.2006 at 12.30 CET the last 8 pics are mine. I hope you can see these ?
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Unread postAuthor: rna_duelers » Fri Sep 29, 2006 7:21 am

Cool gun,pics are a bit small.Very nice first gun.I love the metal guns and the high pressures you can take them to and only running it at 7bar,wai till you go to 14-12 bar those projectiles will really fly!And im 6'1" woot!
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Unread postAuthor: Brian the brain » Fri Sep 29, 2006 12:19 pm

You might wanna go here: http://www.pneumatiekshop.nl/producten/ ... htm#anker1

You can order them from Holland can't you?
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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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Unread postAuthor: POS » Fri Sep 29, 2006 5:05 pm

Thanks BTB, intresting site. It is not clear though, what triggers the valve. You know that ?
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