MAPP injected combustion V2.0

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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Tue Apr 10, 2007 10:31 pm

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 3:05 pm, edited 4 times in total.
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hi
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Tue Apr 10, 2007 10:34 pm

thats a sweet cannon.

can i guess what your "secret method" is that you used to attach the ball valve?

my guess is that you drilled a hole in the cap and glued it on. am i right?
SpudBlaster15
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Tue Apr 10, 2007 10:35 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 3:04 pm, edited 1 time in total.
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Velocity
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Tue Apr 10, 2007 10:43 pm

Damn... nice clean gun!

Aluminum cam locks are the best... Even though I don't care if I have to muzzle load a projectile or not, they just make a launcher look so much better!

Long barrels are also sick... most people would chop the barrel at 60" on a gun like this, just to make it more ergonomic. But I am sure this 96" barrel packs a serious punch (I would have kept the long barrel too 8) ).

How is the ball valve attached? Hmm...

1) Threaded on with a pipe nipple?
2) Solvent welded with a short piece of pipe and something else on the other side of the clean out cap?
3) Magic?

Once again, awesome cannon... definitely one of the better combustions that I have seen.
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Pete Zaria
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Tue Apr 10, 2007 10:48 pm

Beautiful job. I have a very similar gun with two handles, a 1.5" vent valve, a spark strip, and propane instead of mapp. I'm going to use your idea for barrel supports, and see if I can find some of those camlocks.

Very very clean build. I love it. How's the range?

Peace,
Pete Zaria.
SpudBlaster15
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Tue Apr 10, 2007 10:56 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 3:04 pm, edited 1 time in total.
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ArticWolf
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Wed Apr 11, 2007 12:06 am

Sweet Looking cannon I am going with a long barrel with mine but it is only half done Same style as yours but Damn Sweet cannon! Oh And I guess that it is treaded on the ball valve and welded to the end cap right. LOL.
Killjoy
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Wed Apr 11, 2007 12:12 am

Wow that is an awsome looking cannon, kind of suprises me it used to be you old mapp one (I can still see the resemblince, but it looks a lot better this way).
I'm wondering if thats an actual clean-out cap though, because there looks to be about a 1/4" lip around the end of the female adapter;
So I'm guessing its

a) some sort of pressure rated plug, or
b)you reinforced the clean out cap with some sort of material, possibly to help support a pipe nipple the valve is threaded/cemented on to?
SpudBlaster15
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Wed Apr 11, 2007 12:21 am

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 3:04 pm, edited 1 time in total.
locksmith
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Wed Apr 11, 2007 11:14 am

Great job nice launcher
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iPaintball
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Fri Apr 13, 2007 5:05 pm

That is one of the nicest combustions I've seen to date... great work!
Where'd you get those camlocks from?
SpudBlaster15
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Sat Apr 14, 2007 1:32 am

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 3:16 pm, edited 1 time in total.
souljahz_unite
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Thu Apr 19, 2007 8:55 pm

that cannon looks awesome. the look is wicked. im building a basic on now for a startign project. maybe one day ill create a sick looking cannon like that :D until then ill settle with a basic combustion
sjog
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Thu Apr 19, 2007 9:05 pm

Nice gun And those saddle cuts work great on your barrel supports
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Bubba05
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Thu Apr 19, 2007 9:19 pm

That sir is a reallly nice gun!
Clean and BLACK!!

Bubba
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