M.H.I.S Thumper

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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rna_duelers
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Yes this thing looks stupid and not very formidable,but this thing surprised me alot from the first shot a a nice fitting tatter it sent it flying about 80meters and the chamber smacked me in the mouth and gave me a nice lump.

Its quiet to shoot and doesnt take very long to fill with a pump which is good as its portable.The C:B is about .5:1 and i have fired it at 150psi.It is all class 18 construction apart from the barrel which is class 12 both chamber and barrel are 50mm diametre.The valve is a 25mm modded sprinkler which for some unknown reason leaks a little out the sealing face.

Max Velocity:800fps+
Attachments
The whole unit.
The whole unit.
thumper1.JPG (11.71 KiB) Viewed 7166 times
Chamber valve and schrader.
Chamber valve and schrader.
Thumper with PB barrel.
Thumper with PB barrel.
thumper3.JPG (11.4 KiB) Viewed 7035 times
Special ammo for the 50mm barrel its a clay ball coverd in tape and cloth for stabalisers.
Special ammo for the 50mm barrel its a clay ball coverd in tape and cloth for stabalisers.
thumper4.JPG (15.19 KiB) Viewed 7035 times
Last edited by rna_duelers on Fri Mar 23, 2007 4:39 am, edited 3 times in total.
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djt
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nice gun. im a fan of small and portable guns.
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rna_duelers
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Thanks again.I was thinking of loading pics of my half finished hybrid aswell,but i'll finish it first.
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ProfessorAmadeus
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Why does the barrel look so wavy? I am starting to sway against sprinkler valves because pistons are so much better. Good job overall.
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SquishY
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Pretty kool... but, I'm with Professor on this one, try to make a 1" porting piston for it, and send that commie tater much farther.
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rna_duelers
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It was a quick throw together and it fun,plus i didnt have to worry about making the piston and why the barrel looks all wavy i dont no...Just how the photo was taken.
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SquishY
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Make one anyone anyone, couldn't be that hard to find stuff for a one that size. Besides it would't hurt, only help.
Whoever appeals to the law against his fellow man is either a fool or a coward.
Whoever cannot take care of themself without that law is both.
For a wounded man shall say to his assailant,
'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
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rna_duelers
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I might make a 25mm piston seeing as i got paid $85 but thats going into my next big project,and its going to be crazy.
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SquishY
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Couldn't cost that much to make, just do it man, and make the porting threaded so you can use it on other stuff to, see where this is goin?
Whoever appeals to the law against his fellow man is either a fool or a coward.
Whoever cannot take care of themself without that law is both.
For a wounded man shall say to his assailant,
'If I live, I will kill you. If I die, You are forgiven.'
Such is the rule of honor.
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POS
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ProfessorAmadeus wrote:Why does the barrel look so wavy? I am starting to sway against sprinkler valves because pistons are so much better. Good job overall.
I think sprinkler valves are very good for triggering the piston valves. But ot to use as a main valve.

BTW, nice gun. Try to shoot flour with it. See how far you can get. What pressure do you use ?
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jrrdw
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Does the barrel unscrew from the valve? Interchangeable barrels on this little bad ass! To cool!!!
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rna_duelers
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POS-I think i might test the flour!That spunds fun a nice cloud but after it stops raining.Usualy at 120-130psi.

jrrdw-I do actualy have a smaller barrel for it which i didnt thing about posting its 20mm PB barrel and is 60cm long it is also good for marbles.

I'm going to get some pictures of the cool ammo i made for it up soon and the other barrel.
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killagorrila99
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Very nice gun. Is that a pope valve?
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rna_duelers
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Sure is a pope valve,and there are new pics with the PB barrel and special ammo.
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Urban Ninja
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I love that gun, a nice pistol style. Have you thought about maybe putting a detachable stock on it?
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