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.
i will build a combustion spudgun with propane regulator and a venting system, but i was thinking if is possible to make a cheap and efficient venting system, a fan goes very weel, but i want a venting system that don't need to open the chamber ....
so... how about this one:
yes, a air pump..
(click to enlarge)
very simple but i think it work right ?
Last edited by nightshot on Thu Dec 20, 2007 6:59 am, edited 1 time in total.
you gotta sit here and think how many pumps is it gonna take for you to equal the volume inside the chamber to force out burnt gasses. use a damn PC Fan and 2 9V batteries wired in series.
Yea, that's definitely going to get you at least a tazer.
<a href="">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
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BigGrib wrote:you gotta sit here and think how many pumps is it gonna take for you to equal the volume inside the chamber to force out burnt gasses. use a damn PC Fan and 2 9V batteries wired in series.
maybe 10 pumps ??? o.O
hubb017 wrote:
nightshot wrote:...but i want a venting system that don't need to open the chamber ....
If you look in the album, I had submitted a simple hand operated mixing and exhaust fan. I have 3 guns with that fan. It takes a few spins on the weighted knob.
BigGrib wrote:you gotta sit here and think how many pumps is it gonna take for you to equal the volume inside the chamber to force out burnt gasses. use a damn PC Fan and 2 9V batteries wired in series.
maybe 10 pumps ??? o.O
10 pumps my arse, and you would rather sit there pumping that damn thing than open a ball valve on the back of the cannon and flip a switch to turn on the fan wait 5 seconds close the valve and inject the propane. i'm not a bettin man but i'd go with the fan and ball valve.
why is it that you don't want to open the chamber between shots. i mean come on
Yea, that's definitely going to get you at least a tazer.
<a href="">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
facebook.com/biggrib
OR, you could use the bike pump as the chamber. keep the handle there as a stock and then you can easily vent out the gases.Put a pin through the handle to stop it from moving when fired.