Hahaha First combustion

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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Mr.Russ
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Sat Sep 08, 2007 7:50 pm

thursto came over yesterday and we built a combustion.

My school was cleaning out the observitory and there was 90mm PVC fittings. i got a t with the bottom socket male thread, 2 45 degree elbows and one 90 degree. me being me, i took them. We went to bunnings straight up, he bought some 90mm pipe, an end cap and a female thread end cap. we glued it together and then we left it. the gun was working by night.

It shoots tennis balls, potatoes, cans of softdrink and toilet paper rockets.

thursto with the gun
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whole view
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down the barrel(gun is on a minda angle)
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Only video i have up at the moment it shooting a can full of water. this is poor because it goes so slow. i found it funny though.
http://www.youtube.com/watch?v=vkXR7iO0dNA

move videos up soon
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Music is like candy. you throw out the (w)rappers
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thespeedycicada
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Sat Sep 08, 2007 7:54 pm

kool looking cannon in the second pic it kinda looks like a giant alien hair dryer (dont ask me why it reminds me of that) :)
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Hubb
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Sat Sep 08, 2007 8:45 pm

WTF? That is definitely an interestingly pieced cannon.
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Mr.Russ
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Sat Sep 08, 2007 9:06 pm

haha. the pieces are kind of like a stock. its n ice to hold
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Hubb
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Sat Sep 08, 2007 9:13 pm

From looking at it, I would assume the black button is your igniter. What kind of igniter is that?
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Thursto
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Sat Sep 08, 2007 10:57 pm

Hey, my god i love this cannon, its a BBQ igniter, with 2 copper rods attached (approx 1mm thick) and makes the spark in the middle of the chamber. I was firing it today, and i did like maybe 5 seconds of lynx deoderant spray, and it shoot a tennis ball like maybe 15m (tennis ball was wadded with newspaper)???? But i still like this cannon very much :D
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Mr.Russ
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Sat Sep 08, 2007 10:58 pm

its a type of gas oven ignitor. more comfy button though
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mike1010
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Sun Sep 09, 2007 1:08 am

why are there 2 posts? looks kinda cool but also a little um.... uncomfortable to hold.
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Thursto
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Sun Sep 09, 2007 4:56 am

mike1010 wrote:why are there 2 posts? looks kinda cool but also a little um.... uncomfortable to hold.
Well to me its really comfy, just use the palm of my hand to hit the igniter and boom, does have some kick back :D it does look a bit uncomfy to hold but for me its not.
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