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French air canon : The 404 not found
Posted: Sun Apr 26, 2009 7:10 pm
by Sedalc
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
Posted: Sun Apr 26, 2009 7:21 pm
by far_cry
hey nice canon you have
so with thews pellets how is the accuracy ?can you hit 5" target from 50 meters ?
Posted: Sun Apr 26, 2009 7:37 pm
by starman
It looks a little like it came straight out of the brass section of the French Army band....
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!
Re: French air canon : The 404 not found
Posted: Sun Apr 26, 2009 7:47 pm
by Technician1002
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.
Posted: Sun Apr 26, 2009 7:53 pm
by Hotwired
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
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
Posted: Sun Apr 26, 2009 8:59 pm
by inonickname
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.
Posted: Sun Apr 26, 2009 9:46 pm
by daniel323
Great gun. I love the clean design but..
as everyone said before.. reduce the deadspace.
great gun and a video would be awesome
Posted: Sun Apr 26, 2009 10:20 pm
by Sparkie
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