how to build a spudzooka

This is a discussion on how to build a spudzooka within the Real Life Hacks board part of the General category; this is really dangerous epically if fired at a person or animal, this project may cause bodily harm if used ...

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  1. #1
    35yeros's Avatar
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    how to build a spudzooka

    this is really dangerous epically if fired at a person or animal, this project may cause bodily harm if used improperly!!
    dont not use solid gas!!!! mix in some other filler, no more than 1/4 of your mixture should be gas/nitro. mixing in more will blow up the combustion chnamber, and will throw shraphnel everwere.
    this is a guide to building a spudzooka. a spudzooka is a rpg like gun that shoots a potato at 200fps, if your like me you will use gas and nirto for ignition so the potato will be going 450fps because of our internal combustion chamber

    this was not my creation, ala tho i have built a spudzooka using this exact guide.

    2 feet of 2 inch dia. PVC or ABS pressure rated pipe
    1 foot of 3 inch dia. PVC or ABS pressure rated pipe
    screw off end cap for 3 inch pipe (note: clean out plug may be used)
    slip to threaded 3 inch fitting
    3 to 2 in reducer
    PVC or ABS cement
    BBQ igniter
    2 drywall screws
    hair spray
    plenty of spuds


    note: this image is not the origonal image that was with this guide, origonal image got lost in cyberspace. this still has the same idea though.

    1. Cut pipes to correct length's with a hacksaw 2. Glue the barrel and the chamber to the reducer as shown in the diagram. (if PVC is used don't forget to apply primer first.
    3. Close off the end of the chamber with the fitting and screw-on end cap or the drain plug cap.
    4. Screw the drywall screws through the sides the combustion chamber so there is about a 1/4 to 3/8 inch gap
    5. Connect the sparker to the drywall screw and make sure it fires properly, if no spark fires move screws closer and re-test.
    6. Bevel the end of the barrel so that the potato will be cut to size when it is loaded. Beveling can be done with a Dremel or if one is not available a file can be used.
    7. Let cement dry for about an hour (this time can be used to go buy some spuds!!)


    1. Load the gun by cutting a large enough potato in half and then cutting it to the right size by pushing it into the barrel of the gun and letting the gun cut the potato's shape. If the potato is too small the potato will not go very far, for most of the gas will escape. Providing a good seal is the key to distance spud launching.
    2. Get a stick that can be used to muzzle load the potato. Measure out how far on the stick the potato has to be pushed down to be right before the combustion chamber and push it down to that level.
    3. Unscrew the back and fill with propellant. I like using pure propane from a blowtorch, but if one isn't available then hair spray can be used. This is the trickiest part of all. The correct mixture of gas to air has to be present for the gun to fire. Experimenting is the best way. Also you can take a look at the propellant characteristics to get an idea of the right mix. One thing that is important to remember is that the gas needs oxygen to combustion therefore after each time it is fired air must be allowed into the chamber.



    note: i (35yeros) use gasoline, and nitroglycerins as my ignition source, which makes this way unsafe, but way faster. in fact it was so fast i was able to "snipe" a Toyota prius in the front window, breaking it from 50 meters. (using a homemade sight)
    on another occasion i hit a metal oil drum from point blank range and got a chunk of potato in my eye.

    new ignition source: 1/4 nitro 1/4 gas 1/4 gun powder 1/4 out-dated tnt loads of fun.......

    Last edited by 35yeros; 05-07-2008 at 05:35 PM.
    When in doubt, empty the magazine, They dont pay you to bring home bullets

  2. #2
    DoGgY's Avatar
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    picture doesn't work !!!

    damn 35 you seriously love doing things like this

  3. #3
    35yeros's Avatar
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    should now.
    yes i do enjoy building stuff like this, it keeps me entertained :biggrin:
    When in doubt, empty the magazine, They dont pay you to bring home bullets

  4. #4
    Tourangh is offline Addict
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    I have made 3 of these hehe. I actually made one for a science project back in high school.

    Sig thanks to BlueIsImba

  5. #5
    DoGgY's Avatar
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    Quote Originally Posted by 35yeros View Post
    should now.
    yes i do enjoy building stuff like this, it keeps me entertained :biggrin:
    picture still doesn't work ... do [img] image url [/img]

  6. #6
    Therick's Avatar
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    stroup + 35yeros = MacGyver
    k

  7. #7
    35yeros's Avatar
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    Quote Originally Posted by Therick View Post
    stroup + 35yeros = MacGyver
    whos macgyver?
    and i put the pic in using the [img] thing....
    still doesnt work, i am trying to fix..
    When in doubt, empty the magazine, They dont pay you to bring home bullets

  8. #8
    Therick's Avatar
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  9. #9
    35yeros's Avatar
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    hes my clone. :grin:
    btw guide updated. i found a better explosive fuel
    Last edited by 35yeros; 05-07-2008 at 03:37 AM.
    When in doubt, empty the magazine, They dont pay you to bring home bullets

  10. #10
    DoGgY's Avatar
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    and the image work !!! woot if I can

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