A little new, need some help

Boom! The classic potato gun harnesses the combustion of flammable vapor.
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kingjames488
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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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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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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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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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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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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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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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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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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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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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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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alright!! here are the pics
me holding it
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the trigger assembly
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the spark gap and messy insides...
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trying to capture a spark
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the cannon again
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the underside of my cannon
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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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Wow, this really looks good! Ergonomic, lightweight, and powerful! Congratulations of this build!
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kingjames488
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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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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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