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just made fist spud gun !Works!Looking for tips?

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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just made fist spud gun !Works!Looking for tips?

Unread postAuthor: Spud gun » Wed Sep 04, 2013 1:27 am

So I want to use butane. I'm using ABS, and I want to fill the chamber with out opening it. If I cut a lighter in half can I use that if I mount it correctly?
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Spud Gun.jpg
so it's abs I went 4" for the chamber 2" for the barrel. I used red hot blue glue for the pipes. I used a weber igniter and Sealall to hold it in.
Spud Gun.jpg (5.34 KiB) Viewed 468 times

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Unread postAuthor: jackssmirkingrevenge » Wed Sep 04, 2013 4:47 am

http://www.inpharmix.com/jps/Fuel%20Met ... ghter.html

Use the lighter to fill a syringe so you can put in the right amount of gas precisely.
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Unread postAuthor: dart guy » Wed Sep 04, 2013 5:45 am

if you look around there are many hybrid desines that have a valve that is connected to a valve that is conected to a propane tank that you fill the chamber with. but if you are gonna do that you should install a chamber fan(computer fan attatched to a 9v battery) it woll stir up everything and cause a bigger boom. also i think that you may have to open the chamber still so that air get inside. :D
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Re: just made fist spud gun !Works!Looking for tips?

Unread postAuthor: Gleedaniel13 » Mon Oct 21, 2013 8:25 pm

Use the lighter to fill a syringe so you can put in the right amount of gas precisely.


I can't even imagine that even a lighter can be use with this one. Is it not dangerous?
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Re: just made fist spud gun !Works!Looking for tips?

Unread postAuthor: Technician1002 » Tue Oct 22, 2013 11:58 pm

I want to fill the chamber with out opening it.


Remember that part of filling the chamber includes both a fresh charge of fuel and the proper amount of fresh air. How do you plan to purge the chamber of burnt fumes if you don't open the chamber? Air compressor?
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Re: just made fist spud gun !Works!Looking for tips?

Unread postAuthor: jackssmirkingrevenge » Wed Oct 23, 2013 7:54 am

Gleedaniel13 wrote:I can't even imagine that even a lighter can be use with this one. Is it not dangerous?


Why would it be dangerous?
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