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simple blowgun and handpump gun

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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simple blowgun and handpump gun

Unread postAuthor: john bunsenburner » Sat Mar 07, 2009 4:39 pm

Well a week or so ago my brother and I were very, very bored and so i decided to make thinks a little more intresting with this 10min gun. I used the watering this my mom used to spray copper sulfate onto her plants. I took the valve and "barrel" of of it. Then i took the hose of of a hand pump i have and epoxied the tube from the valve and barrel to the hand pump. So the hose acts as a chamber. I took then gun to 150psi and had some ok results using lead balls and nails, the barrel ID is 5mm.
Note this is mainly my brother's gun and it is not quiete what i am capable of doing, wait a month or so to see my first gun :D :wink: now enjoy the pics, sorry there are no damage pics besides a few holes in carboard. Ask any questions and extra info yo need, i will not change much on this gun as it is jsut a cheep past time.

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Unread postAuthor: Demon » Sat Mar 07, 2009 6:04 pm

Looks a bit powerful.

try fitting that on a hand pump and a wood stock to make a sniper.
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Unread postAuthor: sputnick » Sat Mar 07, 2009 7:06 pm

Looks nice Rob, I just finished one something like this, but with a much smaller barrel, You should find some other ammo than fishing weights, make a simple split mould, melt down some tire weights and get some serious ammo going!
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Unread postAuthor: POLAND_SPUD » Sat Mar 07, 2009 7:31 pm

nice...

try using 4.5 mm pellets
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Unread postAuthor: jrrdw » Sat Mar 07, 2009 8:25 pm

There you go john. Is this the leaky one you where telling me about? Strong little bugger putting holes in the can! :wink:
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Unread postAuthor: john bunsenburner » Sun Mar 08, 2009 5:47 am

Well if I decide to use pellets i will use .20cal not .177 as .20cal has a very tight fit in 5mm barrels. Yes jrrdw this is the leaky gun i told you about, it still leaks a bit but that is barely noticable. I have an old stock in my celer so i might just strap that on to it. It sure is fun to tinker with but be prepared for something more serious from me. I am thinking of making 5mm round balls for this gun but am clueless about makign a mold for it, and as I said before, this shouldnt be a big time/money investment so dont suggest huge improvements, its not worth your tim and effort.

Thanks for the positive comments from every one :D
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Unread postAuthor: john bunsenburner » Sun Mar 08, 2009 9:35 am

Update(well kind of):

While using the gun today i managed to blow the epoxy and part of the pump its self of. i found a shock pump and will use one or two compression fittings to connect it to the gun, it will take longer to fill but i hope it will be stronger and wont leak. Ill buy the fittings tomorrow, and ill put the gun onto a stock, my bro will love it!
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