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A little new, need some help

Post questions and info about combustion (flammable vapor) powered cannons here. This includes discussion about fuels, ratios, ignition systems, safety, and anything else relevant.
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Unread postAuthor: kingjames488 » 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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Unread postAuthor: super spuder » Sat May 19, 2007 10:48 pm

that will decrease the performance of the launcher, use a breech loader ensted
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Unread postAuthor: kingjames488 » 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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Unread postAuthor: super spuder » 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.
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Unread postAuthor: SpudBlaster15 » Sat May 19, 2007 11:09 pm

super spuder wrote:that will decrease the performance of the launcher, use a breech loader ensted


From now on, I am going to call you SFI. If you figure out what that means, you can add it to your sig.

What he is proposing to construct IS a breech loading system, and it will not decrease the performance of the launcher.
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Unread postAuthor: super spuder » 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.
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Unread postAuthor: kingjames488 » 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!!

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so will a 3" chaimber be ok or should I use a 4"??
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Unread postAuthor: frankrede » 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
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Unread postAuthor: kingjames488 » 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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Unread postAuthor: super spuder » Sun May 20, 2007 8:39 am

have fun, hopefully you can go out and get some stuff today :D
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Unread postAuthor: kingjames488 » 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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Unread postAuthor: kingjames488 » 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...
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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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Unread postAuthor: Velocity » Sun May 20, 2007 7:48 pm

Wow, this really looks good! Ergonomic, lightweight, and powerful! Congratulations of this build!
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Unread postAuthor: kingjames488 » 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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Unread postAuthor: super spuder » 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.
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