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B.M.F. cannon entered in contest.

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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B.M.F. cannon entered in contest.

Unread postAuthor: scatdawg » Wed Apr 25, 2007 7:34 pm

just entered my B.M.F. cannon in the contest. if anyone has any questions or comments post here or pm me. hope you guys enjoy. forgot to mention in the contest that this is my first pneumatic and i learned all the theorys from you members here on spudfiles. so thanks to all. scatdawg
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Unread postAuthor: ShowNoMercy » Wed Apr 25, 2007 7:36 pm

Nice gun. How did you make all the metal parts?
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Unread postAuthor: scatdawg » Wed Apr 25, 2007 7:40 pm

thanks. my occupation is a cnc machinist. ive worked thru my lunch hours for the last week and a half making this cannon.
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Unread postAuthor: spudthug » Wed Apr 25, 2007 7:41 pm

DAMN........that is effing nice dude...wow that is pimp crap@@ its coaxial right?? jesus dude i have to say that is the best ever coaxial ( if its coaxial) penuamtic i have ever seen...and its up there with the best handheld pneuamtics...all i can say is damn..
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: ShowNoMercy » Wed Apr 25, 2007 7:42 pm

I am very jealous, I only have lathes and mills that are probaly older than 40 years. But I guess its a learning process. So whats the RPG looking round for?
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Unread postAuthor: turbohacker » Wed Apr 25, 2007 7:42 pm

very nice gun, i assume that you fill it through the valve, if so how well does that work?
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Unread postAuthor: A-98 » Wed Apr 25, 2007 7:42 pm

cnc machinest....i think your my best friend....

EDIT: eh, maybe i should read the cannon submission, wouldnt want to look like an idiot :roll:

*i asked a question that was answered in the actual submission, silly me*
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Last edited by A-98 on Wed Apr 25, 2007 9:29 pm, edited 2 times in total.
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Unread postAuthor: Thursto » Wed Apr 25, 2007 7:43 pm

Wow, let me say, tha is a nice a$$ cannon, good luck in the contest, as to everyone else. but i gotta say i love the paint job, looks lik a nice and cleanly constructed gun
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Unread postAuthor: ShowNoMercy » Wed Apr 25, 2007 7:44 pm

Just one more question, how did you machine the inside of your barrel? I know on a lathe you can use a reamer, a nice drill bit, or a boring bar but as for a CNC machine is it the same?
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Unread postAuthor: scatdawg » Wed Apr 25, 2007 7:46 pm

thanks for all the props. it does fill thru the valve. it is a coaxial. the qev is just unbelievable on this cannon. the piston is made of uhmw plastic with two orings. .005 clearance. rubber flap covers the equilization holes. the foam decreases pilot volume. the wood was just a sleeve for the airgun for aesthetics. the rpg is just a muzzle loader bar to load the corks.
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Unread postAuthor: scatdawg » Wed Apr 25, 2007 7:49 pm

the barrel is a standard size aluminum tube. not pipe so it has no seams inside. perfectly extruded .800 inside diameter. the bullets i made were rifled since my lath doesnt have enough travel to run a rifling tool thru th barrel. the longest barrel i could rifle would be about eight inches.
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Unread postAuthor: ShowNoMercy » Wed Apr 25, 2007 7:50 pm

Ok sounds good, nice work again. I am a fan of machined parts.
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Unread postAuthor: spudthug » Wed Apr 25, 2007 7:51 pm

looks good altogether but i tihnk ur going jsut a bit overkill on actuating it witha qev and a modded blowgun..now dont get me wrong it looks good but for a small cannon i cant really say that the qev increases the power that much...i know it does but im jsut saying a 1/2 or 3/4 ball valve would proabbaly do the same..almost...i =still lurve ur cannon though
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Unread postAuthor: goathunter » Wed Apr 25, 2007 7:51 pm

Very nice,clean cut and beautiful.As with Shownomercy I am jealous.My lathe was made in the 30's,I'm a litttle outdated.The RPG ramrod was a good idea,it compliments the gun very well.And know it is time for the Noob question:how powerful is it? :wink: I would lke to see some damage pics when available.
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Unread postAuthor: ShowNoMercy » Wed Apr 25, 2007 7:52 pm

And how long does it take to machine each bullet?
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