SpudFiles

I posted pics in the Pneumatic Forum a couple of months ago while I was preparing to make a video. The cannon incurred a mechanical problem soon after posting the pics so, I removed them. I've spent the past month making design changes throughout and testing. These pics are of the final (almost) design.

SPECIFICATIONS:
Barrel = 1.251id x 1.75od x 72"
Ammunition = 1.250 Ball Bearing
Semi-auto
Operating Pressure = 1,000psi
Pressure system = Continuous fill.
Chamber / Barrel = 1:1
Trigger Mechanism = Pneumatic actuated ball valve, 0.630 id

Wow..... VIDEO PLEASE!!! NICE gun.

... INSANE ...

I love all that shiny clean solid full metal construction ...

You CAN'T skip making a video !
(I wondered why it suddendly disapered ... )

Holy crap that is nice. Your last version was good enough but you really out-did your self on this one. Yeah...we're gonna need a video too

Maybe a principe schematic ?

Demon wrote:(I wondered why it suddendly disapered ... )

Because of the minor malfunction I went into self-imposed exile! I used that time to redesign the things that I found offensive.

any pics of the inner workings of that schweet arse reg you built?

why is it limited to 60rpm? due to flow requirements or because of its loading mechanism?

POLAND_SPUD wrote:why is it limited to 60rpm? due to flow requirements or because of its loading mechanism?

The rof is governed by several of things. As I recall, a 1.250 bearing weighs about 2045 grains. That's a lot of mass to move around quickly.

Each operation has to run reliably and not crowd the next......it's all a matter of time. 60 rounds equates to about 17.5 lbs of steel down range in 1 minute. How much faster do you think it should run?

Valid point... I must ask for some velocity specs of this. Also, how do you fill the chamber? I assume, you have a scuba or HPA pump at the shop in order to reach 1000 psi per shot.

thedeathofall wrote: Also, how do you fill the chamber? I assume, you have a scuba or HPA pump at the shop in order to reach 1000 psi per shot.

No velocity specs at this time but, coming soon.
I have several size "K" cylinders of nitrogen. When the cylinders are full they contain 2500 psi (200 ft^3+). I don't have a way to refill them with hpa. When the pressure drops to low, I exchange them for full cylinder. Needless to say....rapid fire can quickly empty a type "K" cylinder.

That is really cool and clean. Very nice build.

but as I understand the loading mechanism and the main valve operate independently, right ? so while the loading mech loads ammo the gun can be filled at the same time... so the question is 'what takes more time ? filling or loading the next round

it's all a matter of time. 60 rounds equates to about 17.5 lbs of steel down range in 1 minute. How much faster do you think it should run

I realize that increasing the ROF is not exactly the most practical thing you one can do with a gun like this... though I would still like to know what is the most limiting factor here


what is this http://www.spudfiles.com/forums/files/p ... 13_966.jpg ?
uhmm it looks like an air cylinder but it seems it's attached to some sort of a lever... is it an air operated ball valve ?[/quote]

POLAND_SPUD wrote: what is this http://www.spudfiles.com/forums/files/p ... 13_966.jpg ?
uhmm it looks like an air cylinder but it seems it's attached to some sort of a lever... is it an air operated ball valve ?

Trigger Mechanism = Pneumatic actuated ball valve

Looks like it

wow that's a true beauty

lol is your rear sight a pc fan cover, looks like the old school war plane guns would have.

BRING ON THE DAMAGE PICS