semi automatic cylinder,french airgun

[jules56]

Hi ,this my new project, the idea just Polandspud mister, thank you to him! 8)
caliber 8mm ,Steel,regulated to 5 bar for video ...





[youtube][/youtube]

[Lockednloaded]

looks nice, but can we get a few more specifications? like what size your QEV is, what bore it is, and what ammo you are shooting?

[JDP12]

Looks good!! keep the awesome projects coming

[POLAND_SPUD]

How the hell did you manage to make it that compact? it's as small as a pistol
Good job - that looks great


oh you might find this link useful -> http://www.cmatic.it/
It's an italian company selling high pressure push-to-connect fittings and tubing. I am pretty sure that they've got distributors in France

like what size your QEV is

Probably it's 1/4"

[jackssmirkingrevenge]

How the hell did you manage to make it that compact? it's as small as a pistol

True, puts your Heath Robinson device to shame

Looks and works great, but shame about the delay between shots.

[POLAND_SPUD]

@jsr
build a working semiautomatic gun that isn't a piece of board with springs strapped to it - then we can talk

delay between shots

In this case the only limiting factor is the slide valve. Let's face it - it wasn't designed to be switched from one position to the other quick

[Gun Freak]

Dude I swear, you have to one-up everything! This is fantastic Jules! Sorry POLAND, but Jules' is way cooler, its smaller and less powerful but it is sick. Amazing job Jules! This makes me want to build a semi! I say you put 30 bar in and see the damage On a scale of 1 to 10, its a 10. You never fail to impress us.
Cheers :occasion5:

[Lockednloaded]

wouldn't it also be helpful if you magazine was airtight?

[Gun Freak]

wouldn't it also be helpful if you magazine was airtight?

Absolutely, but it's easier said than done. Plus, the gain in performace probably wouldn't be worth the extra hassle.

[Lockednloaded]

Whats so hard about a nipple with a spring and a pipe cap? and If the ammo seals well then the power increase would be noticeable

[lozz08]

I agree, it would be much more powerful if the magazine sealed properly.

[Gun Freak]

It wouldn't matter, a sealed mag would make dead space and by the time the projectile was moving fast, the air loss would be that same in both instances.

[maverik94]

Very nice. It looks to be pretty simple, compact, and functional. However, I can hear that there is a significant delay between shots when the chamber is being refilled...

[Lockednloaded]

It does matter, dead space is heaps better than an uncovered hole at your breech. And how is there air loss when the magazine is sealed? answer: there isn't any

[POLAND_SPUD]

ohh damn.. this design fires from a closed bolt... so unless you f### something up the magazine is 100% sealed

ROF is low because slide valve isn't the best trigger...