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ChrisP

Member Since 01 Mar 2006
Offline Last Active Jul 21 2006 07:43 PM

Topics I've Started

Simple Combustion Mini Nerf Gun

23 June 2006 - 03:10 PM

I got bored with my main project (a rendition of Boltsniper's BS-1 rifle) a couple of days ago and decided to make a simple combustion nerf gun out of this cool aluminum energy drink bottle one of my friends gave me. I wanted to keep it small so I could take it with me and hide it in inconspicuous places. It utilizes the same basic firing principles as a potato gun: alcohol in a spray bottle and a grill ignitor. Despite its size, it gets pretty decent range (I'd say around 50 ft with very light weight darts). I think if I increase the mass of the darts, I will get longer ranges. The darts I am using now just kinda spin out of control after a while. I want to try firing some 1/2" ball bearings if I can find them, even though that might be a little dangerous. :blink:

Anyway, here are some pics. Remember, I did try to keep it simple, so don't go looking for any bolts or magazines or anything like that. :blush:

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This is a shot down the barrel so you can see the two pieces of copper I crossed to prevent the ammo from falling into the main chamber where the alcohol explodes. I put the two pieces of copper in the coupler you see in the first picture and then glued the pipe in to secure them.

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Here's the sparker assembly. The inside of the cap was really smooth so I had to grind it down to the metal and use a special epoxy to get the wires to stay in.

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And here's the entire thing put together and ready to fire. It makes a pretty loud report. Loud enough to scare a few of the birds out of the trees around my house.

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Enjoy,

Chris