Spray n' pray

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.
SpudBlaster15
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Thu May 24, 2007 10:24 pm

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 3:46 pm, edited 2 times in total.
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noname
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Thu May 24, 2007 10:33 pm

Haven't tried that stuff, but my friend has some of his sister's hairspray that has ingredients similar to that. I have an empty can he gave me, but it's too much so I probably won't buy any.
First 5 ingredients:
Alcohol SB-40 (denatured alcohol), propane, isobutane, dimethyl ether, butane
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Fnord
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Thu May 24, 2007 10:40 pm

Kinda off topic here, but does anyone know what pressures most aerosole cans run at?
It would be cool to stick a schrader valve in one and fill it up with propane. You could just take it with you instead of attaching a propane meter to your gun.
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paaiyan
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Thu May 24, 2007 10:50 pm

I use static guard and get a pretty consistent ~175-200 yards. I tried carb cleaner but it didn't work very well. I think it's because it wasn't spraying fine enough.
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SpudBlaster15
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Thu May 24, 2007 11:16 pm

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
Last edited by SpudBlaster15 on Wed Jul 14, 2021 3:46 pm, edited 1 time in total.
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paaiyan
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Thu May 24, 2007 11:20 pm

Uh, not too much actually. Some people suggested it so I got some. it worked pretty darn good so I never tried too much else that I didn't have laying around the house already. I've gotten a few shots from it upwards of 250 yards. Of course, my cannon is over 8 1/2 feet long.
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jackssmirkingrevenge
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Thu May 24, 2007 11:52 pm

_Fnord wrote:Kinda off topic here, but does anyone know what pressures most aerosole cans run at?
It would be cool to stick a schrader valve in one and fill it up with propane. You could just take it with you instead of attaching a propane meter to your gun.
Ah, but the propane meter allows you to insert the optimum amount of propane into your chamber, while spraying with an aerosol is very hit-and-miss.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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noname
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Fri May 25, 2007 7:15 pm

Aerosol isn't hit and miss after, say, fifteen or so shots. 2 seconds works 100% of the time for me. Once you get used to it, your brain turns off your finger when the spray time is over.
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experament-u2
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Fri May 25, 2007 7:43 pm

noname wrote:Once you get used to it, your brain turns off your finger when the spray time is over.
that just made me lol
i use some stuff called brut witch works rely good
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Bubba05
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Sat May 26, 2007 10:11 pm

I use Lynx deoderant it goes ok for S%#Ts n giggles. But when i realy wanna make a big bang i use carby start! and the whole spray n pray thing dosent apply to me anymore. I got the mix pritty down pat these days.

Bubba
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