So you think BBs would actually flow instead of just sitting on the bottom of the T letting air pass over them?

I'm scared because the airs input and output would be inline.
Maybe if it was filled over halfway idk.

So I'm sick of making really gross builds because of my horribly limited resources. They're never airtight and usually end up with a much lower power than I desire. I had an idea for a full auto gun with a detent and would like some feedback before I actually try and make it. So the general idea is ...

Yeah I thought about doing that if it didn't work out too well. I already have a mini vortex gun though which sorta fills that purpose. Although if I put a chamber at the end of this and made it not too long I'd look like Antoin Chigurh :V I'm going to do a QEV build soon though so this is just a no...

http://i44.tinypic.com/2ni1d0n.jpg So I hooked this up. Got the pressure washer handle for $19.99 , the fittings I needed for $6.49, and I salvaged the barrel from a broken AEG I found in the canyon by my house. I'll probably use a longer barrel in the future (the plastic thing lets me make a hopup...

most of the time it's because they dont have access to materials or are cheaping out a proof of concept before going all in

What were you using as a shell?
And how much vinegar/baking soda?

Oh who cares, it doesn't matter. After getting shot out of a combustion cannon the force of impact will make the bottle pop I'm quite certain.

Um, what? The grenade detonates by blowing a hole out of a weak point in the bottle. The cap would be at the rear of the projectile, and would not hit the ground nor rupture on impact.
Either way, this deign could work as a mortar/an intense single shot shotgun.

Ive messed around with baking soda and vinigar in bottles. Id add them both put the cap on and chuck it at the ground. The bottle typically didnt explode the cap blew off. The bottle would fly about 75 feet in random directions. I got hit by the bottle a couple times and trust me you wouldnt want t...

Oh my that's similar.
The video though was so uncaptivating I couldn't even tell how it fired :V

@Lock: LOL (legitimate laughter), I feel most people would feel the same way you do, hence my original spring deign. And I'm unsure as to why you made the chamber with the pressure gauge on it so long, don't you just lose power? @Jack: I'm not super serious about airsoft as a hobby, so it'd mostly b...

Yeah, I'd count on the reaction taking long enough that it would detonate on impact as opposed to launch, a problem which if it exists, the 'ziplock mod' may remedy. And I'd be thrilled if the spring gun could make it 120 or so feet. Posting combustion random thoughts paper in a minute. EDIT: Okay, ...

Yeah, I realize it wouldn't serve much purpose, but if it got enough distance the cool factor would be worth it for me (the parts would only cost like $20). Hucking baking soda/vinegar water bottle grenades gets stale :V I could also turn around and make this into a mortar, although I think I'd go w...

So I have an idea, despite spring being so frowned upon. I don't know if it would give enough power so I'm looking for some feedback. The caulking gun compresses the spring, which is released by pulling out the metal bar that is wedged inbetween the two holes in the PVC. I could cut a hemispehere ou...

I bummed some broken airsoft guns off of my friends and parted them out (too bad I only got one barrel) and mounted them inside of a box with putty, zipties, and duct tape. <a href="http://s368.photobucket.com/albums/oo126/muddy_the_mudkip/?action=view¤t=IMG_0587.jpg" target="_blank"><img src=...