A little new, need some help

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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kingjames488
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Sat May 19, 2007 10:44 pm

also I was thinking of trying an idea i saw a while ago.
on the reducer where the small pipe fits on, I was thinking of making it go all the way through and comming out the other side of the reducer a little, then filing it down there so I can unskrew the barrel and ram the potatos on and not have to use a ram rod... would that work having an overhang inside the comb chaimber??
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super spuder
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Sat May 19, 2007 10:48 pm

that will decrease the performance of the launcher, use a breech loader ensted
trying to decide on a new project, probably something small.
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kingjames488
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Sat May 19, 2007 10:52 pm

breech loader??
is that something new or a fancy name for something I already know :D.
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super spuder
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Sat May 19, 2007 10:58 pm

that is where there i a hole in the barrel with a biger piece of pipe over top, do a search , and you will see what i am babling about.
trying to decide on a new project, probably something small.
SpudBlaster15
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Sat May 19, 2007 11:09 pm

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Last edited by SpudBlaster15 on Wed Jul 14, 2021 3:44 pm, edited 1 time in total.
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super spuder
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Sat May 19, 2007 11:15 pm

um, it takes up room in the chamber, thus giving less volume, thus reducing proformance. unless i miss understood what he said.
trying to decide on a new project, probably something small.
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kingjames488
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Sat May 19, 2007 11:15 pm

well kinda... it would make the area where the gas enters the barrel not flush with the reducer.
Ill just make it a differnt barrel and try it!!

Merged:

so will a 3" chaimber be ok or should I use a 4"??
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frankrede
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Sun May 20, 2007 1:24 am

a 4" sounds better for your purposes.
golfballs 1.5" class 200 pipe (sdr-21)
tennis balls 2.5" sch 40 pvc
Current project: Afghanistan deployment
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kingjames488
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Sun May 20, 2007 8:34 am

Ya, I decided on a 4" a while ago... I might be getting my suplies today, which means I can post a pic of what I make. But I dont know...
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super spuder
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Sun May 20, 2007 8:39 am

have fun, hopefully you can go out and get some stuff today :D
trying to decide on a new project, probably something small.
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kingjames488
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Sun May 20, 2007 2:28 pm

ok, I'm back.
I had a bit of a shock when I saw the price of the fittings... :(
I ended up getting a 3' section of 3" and a 3' section of 1.5" pipe.
My cannon will just be simple and such.
I will prolly have a 1' comb chaimber with the reducer to 1.5" and a threaded end cap.
I will hopefully still have the wooden handle on it though.

will post pics when its built
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kingjames488
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Sun May 20, 2007 7:46 pm

alright!! here are the pics
me holding it
Image
the trigger assembly
Image
the spark gap and messy insides...
Image
trying to capture a spark
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the cannon again
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the underside of my cannon
Image
Last edited by kingjames488 on Sun May 20, 2007 7:49 pm, edited 1 time in total.
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Velocity
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Sun May 20, 2007 7:48 pm

Wow, this really looks good! Ergonomic, lightweight, and powerful! Congratulations of this build!
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kingjames488
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Sun May 20, 2007 7:51 pm

well it wasnt what I was aiming for... but I'm happy.
think I would be safe with a test or 2 tonight or should I wait to be safe.
I glued it about 3 hours ago...



p.s. how do I use spud bux??
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super spuder
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Sun May 20, 2007 7:52 pm

nice cannon!!! i really like that wood handle, you did a good job glueing the pieces together, no drippings, cant wait to see some damage pics :twisted: i would recommend waiting till tomorrow, and you use spud bux in the shop, what you get 300 , you can buy a signature.
trying to decide on a new project, probably something small.
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