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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PCGUY
- Owner
- Posts: 1435
- Joined: Wed Aug 18, 2004 10:54 pm
- Location: Illinois
- Has thanked: 2 times
- Been thanked: 26 times
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Contact:
Sat Feb 12, 2005 11:47 pm
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GHETTO COKE BOTTLE
Provided By - Mat
It's a 0.5L Coke bottle which uses 7 9volt batteries to charge three 400uf capacitors to 60 volts, they are then discharged into an ignition coil which produces a small but very bright spark!
Very simple, put together with tape
!
The barrel's around 2 feet long and 1" diameter which gives a C:B ratio of 1.6:1, and it's able to shoot an AAA battery(Wrapped in lots of tape..) over a soccer field.
That's what's on the picture, but I replaced the 0.5L coke bottle with a 1.5L sprite bottle which gives better performance and MUCH more sound, as it's a 5:1 C:B ratio...
<img src="
http://www.spudfiles.com/official_pics/Bild(113).jpg">
<img src="
http://www.spudfiles.com/official_pics/Bild(119).jpg">
Provided By - Mat</div>
Last edited by
PCGUY on Sat Jul 29, 2006 12:13 am, edited 1 time in total.
Yes, I am the guy that owns & operates SpudFiles (along with our extremely helpful moderators).
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Jacobthegenius
- Recruit
- Posts: 1
- Joined: Tue Jul 12, 2005 9:44 pm
Fri Sep 16, 2005 10:42 pm
I like your creativity with the ignition system, but it seems to me that for the price of 7 9 volt batteries, 2 capicitors, and an old ignition coil(although you could get that free off an old car), you could buy a piezo igniter.
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bubblebathman
- Private 3
- Posts: 50
- Joined: Thu Sep 22, 2005 12:45 pm
- Location: USA
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boilingleadbath
- Staff Sergeant 2
- Posts: 1635
- Joined: Sat Mar 12, 2005 10:35 pm
- Location: Pennsylvania, USA
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Shandora
- Private 3
- Posts: 57
- Joined: Thu Oct 20, 2005 8:23 pm
Thu Oct 20, 2005 8:42 pm
ive got one questions i always have used thoes pizo but how does the likke grill lighters with the switch thingy work ?
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drac
- Corporal 4
- Posts: 899
- Joined: Sun Apr 24, 2005 8:56 am
- Location: Avon, NY
- Been thanked: 2 times
Fri Oct 21, 2005 7:07 pm
Oh, they work the same way as a BBQ ignitor seen on most grills. Peizoelectricity is most deifnitely useful.
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Insomniac
- Sergeant 3
- Posts: 1297
- Joined: Mon Dec 18, 2006 3:47 pm
- Location: Australia
Mon Jan 15, 2007 9:05 pm
A little mechenical device that rams a ceramic hammer into a ceramic plate, generating a low powered, but high voltage spark.
DON'T POST IN DEAD TOPICS!!!!!!!!!!!!!!!!
I wonder how much deeper the ocean would be without sponges.
Right now I'm having amnesia and deja vu at the same time. I think I've forgotten this before.
Add me on msn!!! insomniac-55@hotmail.com
But, if your confident its safe its ok 
