My first cannon, mini pill bottle

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
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KingPow
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Tue Sep 27, 2005 4:18 pm

A friend of mine recently turned me on to the whole spud gun thing. After seeing everyone else's creations I have been itching to build my own. I don't have a ton of hardware lying around, and I wanted to get something going now, so I decided a mini pill bottle cannon would be a good shooter to start with. I put this thing together in less than an hour (had to wait for the epoxy to dry). I based it on PCGUY's pill shooter with my own modifications. I used a clear 2" pill bottle, a clear pen cylinder, two of those little hook screws used for hanging things, and a clicker and wires out of one of those long click lighters. It's very basic, but quick and very easy to make.
However I am having trouble getting the fuel to ignite. With the clear tube I can monitor the mechanics inside the chamber, and I can see that I am getting a good spark, but still no bang. As fuel I have used WD-40 and I have used Starting Fluid (aka. Diethyl Ether), but still no luck. Any advice? :?
Here's the pics...
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Tue Sep 27, 2005 4:22 pm

WD 40 no longer has ingredients to make it a good fuel, starting fluid floods so easy its even hard to get to work in normal sized cannons
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KingPow
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Tue Sep 27, 2005 4:22 pm

more...
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KingPow
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Tue Sep 27, 2005 4:47 pm

Any advice on how to get a good mix?
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Bedo
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Tue Sep 27, 2005 5:10 pm

one spritz of binacca and your good to go :wink:
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KingPow
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Tue Sep 27, 2005 5:20 pm

Bedo wrote:one spritz of binacca and your good to go :wink:
Excuse my ignorance, but what is binacca?
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Tue Sep 27, 2005 5:25 pm

its a breath freshener, it comes in little tiny spray bottles
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saladtossser
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Tue Sep 27, 2005 5:33 pm

u have that lighter right? use the butane from it, a second or two.
"whoa... I thought pimpmann was black..."-pyromanic13
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KingPow
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Tue Sep 27, 2005 9:34 pm

Ok, I'll try the butane. Man, I've tried isopropanyl, cologne, and a few other things but still no bang. I'm only giving it one spritz into the chamber. Should I let it evaporate a little before closing the chamber or should I close it immediately after adding the fuel?
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CS
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Tue Sep 27, 2005 10:28 pm

King Pow nice mini. I like how everything is clear. Hope it will work for you, it would be disapointing if such a nice gun didnt fire. If your using liquids let it evoperate a little but if your using butane screw the lid on as soon as you are done injecting the fuel.
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KingPow
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Wed Sep 28, 2005 1:44 pm

:? I don't get where I've gone wrong. I'd hate to just toss it, but I've tried everything I can get my hands on, and it still won't fire. Butane, BlowOff (butane & propane), ice remover (isopropanyl), etc...
I still haven't tried the banacca, but with the poor luck I'm having with all the other stuff it may just be a waste of time. or is it???
Man, I really want this thing to fire. I'm sure it would be a sweet little night shooter. :)
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KingPow
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Wed Sep 28, 2005 11:54 pm

AH HA!! I tried the Banacca and IT WORKS! :D Being transparent, when it fires the whole thing lights up in a bright yellow glow! Thanks Bedo! My breath is minty fresh too! 8)
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julz
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Sat Oct 01, 2005 1:46 am

sweet, i'd love to see this thing lit up, great stuff! :) whats the range? etc? is ur ammo just those ear things?
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KingPow
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Sat Oct 01, 2005 8:40 pm

julz wrote:sweet, i'd love to see this thing lit up, great stuff! :) whats the range? etc? is ur ammo just those ear things?
So far I have only tried shooting a few things. Q-tips, spit balls, rubber erasers out of the end of pencils, small rocks... :lol:
The range on the q-tips is about 50 feet. Everything else I have shot I have no idea. They fly so far and fast I have not been able to find them!
I have been shooting this thing so much I have worn the clicker out. Time to get a new one.
I'll be working on a full size cannon very soon. :D
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Fri Oct 21, 2005 8:43 pm

use oust it works but it floods some times
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