MASSIVE constant flow full auto

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Mon Dec 28, 2009 10:17 am

You might remember a couple of months ago I got my hands on a lovely surplus 1" pop-off valve. Well, I finally got round to modding it and here's how the testing went :D Ignore the random fittings, I was just in a hurry to hook it up to my compressor...

[youtube][/youtube]

[youtube][/youtube]

Note how as always, altering the flow alters the rate of fire. My cellphone's noise filter refuses to show how ear-splittingly loud this is!

Anyway, expect a marble autocannon soon ;)

Here's a pic of the mods I made, basically a 40mm PVC insert with an appropriate outlet cut in and custom cast epoxy/rubber piston reinforced with a steel washer.
Attachments
DSCF4429.JPG
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
JDP12
Staff Sergeant 5
Staff Sergeant 5
Posts: 1943
Joined: Fri Mar 30, 2007 8:34 pm

Mon Dec 28, 2009 11:13 am

Wow.. Very nice. What can we expect to see that utilizes this?
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Mon Dec 28, 2009 11:18 am

JDP12 wrote:Wow.. Very nice. What can we expect to see that utilizes this?
As mentioned in the original post:
jackssmirkingrevenge wrote:Anyway, expect a marble autocannon soon ;)
Working on it as we speak, considering the testing was done without a real chamber, it should be quite impressive. I should have it done in a couple of days.
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
JDP12
Staff Sergeant 5
Staff Sergeant 5
Posts: 1943
Joined: Fri Mar 30, 2007 8:34 pm

Mon Dec 28, 2009 11:21 am

That's what I get for not reading the original thread..

facepalm.

Good luck!
User avatar
POLAND_SPUD
Captain
Captain
Posts: 5402
Joined: Sat Oct 13, 2007 4:43 pm
Been thanked: 1 time

Mon Dec 28, 2009 11:56 am

I should have it done in a couple of days
I'd like to see it with a blowforward bolt... you mention it all the time but I can't say I was satisfied with it when I tested the idea... so I wonder if it can be built in the right way??
Children are the future

unless we stop them now
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Mon Dec 28, 2009 12:38 pm

I'm going with a simple tee breech first, if that doesn't work I'll bother with a BFV.
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
psycix
Sergeant Major 4
Sergeant Major 4
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands

Donating Members

Mon Dec 28, 2009 2:09 pm

So you've finally come around to using this beast... awesome.

What kind of loading mechanism are you planning to use?
Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Mon Dec 28, 2009 3:12 pm

psycix wrote:What kind of loading mechanism are you planning to use?
As above, simple tee mag feeding marbles from a vertical tube, maybe 15-20 round magazine should be enough, and an o-ring detent though this is just to stop them rolling out, as the marbles are irregular aren't an extremely tight fit in the closest barrel I have.
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Brian the brain
Moderator
Moderator
Netherlands
Posts: 3497
Joined: Mon Dec 05, 2005 2:06 am
Location: Holland
Been thanked: 6 times

Mon Dec 28, 2009 5:16 pm

Blocker bolt would solve all your problems except simplicity.. :roll:
Also, a loading system like I used on my original Marble Machine Gun would work very well with this..
Nice work..does it pop or does it make lazor soundz like in the vid?



I'm about to buy 4 diving bottles to make good use of my fridgy..so..expect more full auto stuff from me too.

It will be nice to compare this thing to what I have in mind...
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
User avatar
JDP12
Staff Sergeant 5
Staff Sergeant 5
Posts: 1943
Joined: Fri Mar 30, 2007 8:34 pm

Mon Dec 28, 2009 9:18 pm

Diggin the laser pew pew...
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Dec 29, 2009 11:07 am

Here's what I have so far, I'll test the valve and chamber combination later today and the barrel/magazine setup tomorrow.
Attachments
DSCF4431.JPG
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
JDP12
Staff Sergeant 5
Staff Sergeant 5
Posts: 1943
Joined: Fri Mar 30, 2007 8:34 pm

Tue Dec 29, 2009 1:07 pm

Sweet!! Can't wait to see the results
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Dec 29, 2009 8:04 pm

I've shortened the chamber to about 25% of the above, as the flow wasn't sufficient to cycle the valve at higher pressures. Testing due some time tomorrow evening, watch this space :)
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
chinnerz
Specialist 4
Specialist 4
Posts: 470
Joined: Mon Dec 28, 2009 8:08 am

Tue Dec 29, 2009 8:08 pm

nice work jack.
ahaha sounded like a laser rifle at first :P
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26203
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 569 times
Been thanked: 345 times

Donating Members

Tue Dec 29, 2009 8:16 pm

It's all about teh |_az0r 50undz *sigh* I really need to buy myself another digicam hehe, microphone this time!
hectmarr wrote:You have to make many weapons, because this field is long and short life
Post Reply