SpudFiles

I was inspired by DR's chain of little theme launchers that he's got to come up with something new and kinda useful. I thought it would be cool to have a simple combustion that was fairly light and compact. Collapsibility was the answer. I don't know when I'll use it but, well, I can.

It's got a 24" 1.5" SDR 21 barrel for golf balls and I lathed the tip for spud cutting. The ratio comes to about 1.6:1. The gun's got a lantern sparker ignition and I plan to use butane but I still have to figure out how to use the damn stuff. [:D]

It collapses by threading and unthreading the barrel. I lathed out some 1.5x2" thread x thread PVC bushings to slide over 1.5" pipe and cemented them on. The tip of the chamber has two female adapters facing opposite lathed to fit. The barrel also has a slip cap for storing the fuel and some golf balls in it.

So here's a few pictures and a video of the collapsing.

<a href="http://www.spudfiles.com/uploader/uploa ... .JPG"><img src="http://www.spudfiles.com/uploader/uploa ... s.JPG"></a>
<a href="http://www.spudfiles.com/uploader/uploa ... .JPG"><img src="http://www.spudfiles.com/uploader/uploa ... PG"></a><a href="http://www.spudfiles.com/uploader/uploa ... .JPG"><img src="http://www.spudfiles.com/uploader/uploa ... s.JPG"></a>

<a href="http://media.putfile.com/TravelGun"><b>Video</b></a>

simple, compact, its great. You not planning on any midnight adventures with the law with that golfball barrel are ya?

I'd be more inclined to do that with something powerful, fast, and reliable.

Very nice job on that. I should make something small with threaded parts for transportation, but I haven't yet.

Here's a diagram. The blue section is two opposite facing female cleanout adapters. The male "threaded rings" I made thread into those. There's also another picture showing the male ring on the inside of the chamber.

<a href="http://www.spudfiles.com/uploader/uploa ... .JPG"><img src="http://www.spudfiles.com/uploader/uploa ... s.JPG"></a> <a href="http://www.spudfiles.com/uploader/uploa ... .JPG"><img src="http://www.spudfiles.com/uploader/uploa ... s.JPG"></a>

So I figured out how to work butane. It isn't rocket science but I am still working on the ideal spray time. Here's a video of the launcher firing a golf ball.

<a href="http://media.putfile.com/TravelGunShot">Launch Video</a>

Also, I forgot to mention that the barrel cap is used for a mixing device.

Really cool idea for a cannon. Wish i could watch the video!!!

Nice! you have some great ideas. just one question: when you put the lid into the chamber in the "launch" video, is it for mixing the fuel?

Yep. You got it. It works like a charm.