Build log -- Full-auto 6mm - First Test Shots : FAILURE

[Hotwired]

Hehe, nice "Braaaaap" sound on firing

Any ammo gone through it yet or has it all been towards getting a working valve system going?

[POLAND_SPUD]

You held it with your foot?

what's going on on spudfiles....? there are some foot fetishists here?


nice gun.... any chance to see it firing ammo ?

[Leonard]

Sure, im working on adapting the bolt system on it, as described in the first post of this thread. I'v had the bolt system working on a semi-auto design, sure im positive to get it working on this one.

If some may have been wondering, i get fast burst and slow burst depending on how hard i press on the blow gun. Pretty convenient.

Expect full auto shooting before next sunday!

[ALIHISGREAT]

as hotwired said, that "baaaarp" sound is very nice

[Leonard]

When attaching the bolt to the cannon, epoxy alone would not be strong enough.
I had to drill into the rubber piston, screw in a short screw wich would fit in the bolt, fullfill a part of the bolt with epoxy, slide the screw in and spread some more epoxy around it. Im letting in dry for a full 24 hours, i'll see if it works better.

[jackssmirkingrevenge]

ooooh that sounds *very* nice very much looking forward to see it actually firing.

I looks like the pop-off-piston combination is one of the best solutions to the constant flow/full auto problem.

[Brian the brain]

Yep. I think so too.
In effect the modded qev and snapvalve do just the same.At higher pressures and lower rps.But I haven't been able to achieve these kinds of results yet.( in theory I'm there) so my hat's off to you!
I now know what to expect.
I'm gonna try and find time tomorrow to finally lathe a well working snapvalve.

A normal QEV an pop-off are slightly different because of the intake placing.This design is another step forward.Slowly we are making progress.





This has been very helpfull.Thanks!

[kablooie]

Wow, this is very nice, it seems to cycle really well. The fact that you can vary the cycling speed is one of the best parts, because with the pulsed-air bbmg that I made, it would only cycle at two minutely different speeds, and the power was awful. I am looking forward to a video!

[jackssmirkingrevenge]

If some may have been wondering, i get fast burst and slow burst depending on how hard i press on the blow gun. Pretty convenient.

This makes sense as firing depends on the pressure in the pilot chamber reaching the pop-off valve's limit, if you're filling quicker it will obviously actuate quicker. However you might get less power if firing faster as this gives the chamber less time to refill, I would keep a sensibly low rate of fire, less than 5 shots per second, to show cloud BBMGs how it should really be done

[Brian the brain]

Not if the valve is filled from the chamber side..

[jackssmirkingrevenge]

true, fair enough

[Brian the brain]

kay then....


Great..


I think we should compete and see who can make the best machine gun based off this idea...And really get this idea developped fully..

[Tom]

kay then....


Great..


I think we should compete and see who can make the best machine gun based off this idea...And really get this idea developped fully..

And maybe maybe pay a little bit of attention to the look of the gun
T

[vovka351]

very niceley done...
what do you use for 6mm barrel?

[Sticky_Tape]

Do you think this has any chance against brand name bbmgs? maybe you should sell these plans to them for some $. it would definently be good for compact guns.