Potato Launcher

Just build a cannon and want to show it off? Post it in here.

Postby airpress » Wed Feb 28, 2007 1:09 pm


Combustion powered cannon.
I've build on it the last two weeks.Collecting parts,...
The chamber is made of 20cm 2" steel pipe and the barrel is 80cm 1" pipe.It uses metered propane at 1 bar.The ignition system is build in in the wood.I used a router to make the long hole.The ignition is placed in the endcap also i placed a quick-disconnect fitting to let the propane in and let fresh air(with a few pumps of the bike pump) in after each shot.Then reconnect the propane meter and so on.
The cannon has a good power and the potato has a great distance.
I will let you know "how" far he flies, haven't measured it yet.

Here are the pics.

<a href="http://www.putfile.com/pic.php?img=4878515"><img src="http://img1.putfile.com/thumb/2/5812522032.jpg"</a> <a href="http://www.putfile.com/pic.php?img=4878516"><img src="http://img1.putfile.com/thumb/2/5812522151.jpg"</a> <a href="http://www.putfile.com/pic.php?img=4878517"><img src="http://img1.putfile.com/thumb/2/5812522183.jpg"</a> <a href="http://www.putfile.com/pic.php?img=4878518"><img src="http://img1.putfile.com/thumb/2/5812522219.jpg"</a> <a href="http://www.putfile.com/pic.php?img=4878519"><img src="http://img1.putfile.com/thumb/2/5812522232.jpg"</a> <a href="http://www.putfile.com/pic.php?img=4878520"><img src="http://img1.putfile.com/thumb/2/5812522381.jpg"</a> <a href="http://www.putfile.com/pic.php?img=4878521"><img src="http://img1.putfile.com/thumb/2/5812522323.jpg"</a></center>

Greetz, airpress.

<font size="1">Edit: Great job, airpress! ;)
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Postby Bone-23 » Wed Feb 28, 2007 5:37 pm

That cannon looks really nice! Good job.
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Postby M15 » Wed Feb 28, 2007 5:44 pm

So, do you use it as a hybrid or strictly combustion... either way nice cannon!
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Postby Mr.Plow » Wed Feb 28, 2007 6:05 pm

Great job, airpress! You've got a really nice and distinct construction style; I'm never disappointed with your quality!
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Postby Velocity » Wed Feb 28, 2007 8:54 pm

Very beautiful cannon; is it painted?
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Postby spuzi14 » Wed Feb 28, 2007 8:58 pm

Did you polish that or what? It looks awesome!
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Postby An Apple Pie » Wed Feb 28, 2007 10:04 pm

Woah that is shiney. That looks like a really nice gun you got there.
An Apple Pie
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Postby noname » Thu Mar 01, 2007 12:16 am

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Postby Twitcheth » Thu Mar 01, 2007 2:54 am

Thats a great combustion man. Nice.
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Postby markfh11q » Thu Mar 01, 2007 6:36 am

Is the barrel just a regular steel threaded pipe or is it some type of tubing?

Great cannon, BTW! Maybe you should consider some sort of agitation method for the fuel/air mixture after you inject it to increase the power even more.
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