French air canon : The 404 not found

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
Sedalc
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Sun Apr 26, 2009 7:10 pm

Hello , I'm french. Sorry for my English but I use the voila translator therefore I hope that you will understand the bulk.


Total length : 1m20
Weight : 3 or 4 Kg
Caliber : 5.5mm
Pressure : 1bar to 25 bars / 15 to 360 psi
Speed : 175m.s-1
Power (J)] = 8J with a 5.5 projectil
Loading: Bolt action
Valve : Homemade 3/4 Qev
Barrel : 1m 6mm
Chamber : 1m 16mm

With 6 liters chamber = 30/35 fires
With 1 liter chamber = 5 fires
Attachments
Ammo before and after fire :p
Ammo before and after fire :p
SDC13971.jpg
SDC13968.jpg
SDC13964.jpg
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far_cry
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Sun Apr 26, 2009 7:21 pm

hey nice canon you have
so with thews pellets how is the accuracy ?can you hit 5" target from 50 meters ?
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starman
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Sun Apr 26, 2009 7:37 pm

It looks a little like it came straight out of the brass section of the French Army band.... :wink:

It does look unnecessarily complex but plenty sturdy and well constructed, especially for being soldered copper. Some action video is always appreciated.

Welcome to Spudfiles!
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Technician1002
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Sun Apr 26, 2009 7:47 pm

Sedalc wrote:Hello , I'm french. Sorry for my English but I use the voila translator therefore I hope that you will understand the bulk.


Total length : 1m20
Weight : 3 or 4 Kg
Caliber : 5.5mm
Pressure : 1bar to 25 bars / 15 to 360 psi
Speed : 175m.s-1
Power (J)] = 8J with a 5.5 projectil
Loading: Bolt action
Valve : Homemade 3/4 Qev
Barrel : 1m 6mm
Chamber : 1m 16mm

With 6 liters chamber = 30/35 fires
With 1 liter chamber = 5 fires
Does it really have a length of pipe and 180 bend between the QEV and barrel? How much dead space does it have between the valve and projectile? :?: Looks nice. I haven't seen the larger pipe used as barrel supports like that. Nice.
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Hotwired
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Sun Apr 26, 2009 7:53 pm

Welcome to SF


I like a bullpup design, gets a lot of barrel in.

But there is a point where even I would say, right, this should not be built as a bullpup :wink:

Interesting build. Next time I think you should try to get a little less space between the piston valve / QEV and the barrel, it'll improve performance I promise :)
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inonickname
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Sun Apr 26, 2009 8:59 pm

Welcome to spudfiles

Asides from trying to reduce some dead space this is a nice, well constructed and impressive cannon. It will be good to see what you can pull off in the future.
PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
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daniel323
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Location: Salina,Ks

Sun Apr 26, 2009 9:46 pm

Great gun. I love the clean design but..

as everyone said before.. reduce the deadspace.

great gun and a video would be awesome :o
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Sparkie
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Sun Apr 26, 2009 10:20 pm

Looks like a great plinker. What sort of accuracy?
You need to mount the scope better but looks like you have it all set up for good fun.
I like the baby bottle setup. allows for a few shots before refilling. I got sick and tired of constantly pumping up my pvc gun with a hand pump.
Well done and welcome to Spudfiles
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