SpudFiles

if you put the paint in then put on one of the shopping bags (you know the ones they have at the grocery store) over the end of the barrel i think it would work pretty well just need to find a good way to secure it on the tip of the barrel

potter wrote:That is sick as man and i like the way u made it very orignal and it dosent look to hard to make eather i migh make one of these and use it when i play paintball with my mates

Hey don’t go copying other people’s work, that’s called “stealing”. You need to ask him if it’s okay.

go ahead...

noname wrote:"Fairly decent?"
Invent a better one, I'm waiting.

Thank you very much, i did, and it is a freak load better! It took me 15 minutes during chemistry class this morning to draw it up.

here's a pic :booty:

Words fail me!
Ok found ‘em…That would make a nice warhead… works on paper, but will it work in plastic? Wait, the cotton will just shoot up clogging the spray head…

I can describe a simpler timed mine. This is a summary of a common chemistry demo:

You have a gas filled tin with a hole in the lid and base, you light the top hole and it burns off gas from inside with an external flame, drawing air up into the tin to replace it.

When the air/gas mix inside the tin reaches the right level the flame flashes back into the tin causing the mix to explosively combust. This can take a minute or so.

I believe the gas explosion could be used to hurl a payload a moderate distance instead of merely blowing the lid off a tin if scaled up appropriately with the right materials and design to exploit it.

The only drawback would be the naked flame that acts as the timer.

Hotwired wrote:...The only drawback would be the naked flame that acts as the timer.

HA, that’s funny. you call that bad? I call it physiological warfare!!!

Eh?

I think that one missed me.

The flame size depends a great deal on the gas hole and could be kept shielded by a gauze cover. It could easily be the size of a match flame.

The gas and air holes also regulate the time it takes to fire - larger holes = a larger flame which means faster gas burn off = faster air/gas mixing to combustion levels.


Hmm. In a nutshell its a time delayed metered gas combustion with a perfect gas/air mixture.

Not quite a perfect gas/air mixture. It will fire as soon as it can, meaning the mix will always be rich.

Close enough

I feel like filling a coffee tin with camping gas and lighting it now

judgment_arms wrote:Words fail me!
Ok found ‘em…That would make a nice warhead… works on paper, but will it work in plastic? Wait, the cotton will just shoot up clogging the spray head…

you could put metal mesh over it so the cotton stays in place

the cotton isnt a big deal. You may not even need it. yea you could put mesh infront of it and i'd also assume that the paint would spray out first even if the cotton came out at all. Since there is no air pressure behind the cotton then it should stay in place anyways.
Anyhoo, yup I've started on the granade already and I've completed the reverse piston valve. it's going to be really easy to make.Probably cost under $15 to make and you'd have leftovers to make like half of another.

As for the metal tin can shrapnel granade...I really don't think that that's the solution...I suppose that you could easily make a combustion granade if you had a delay switch but those aren't always relyable like the pneumatics are.

???

Its not a grenade I was thinking of....

The eventual gas explosion could be harnessed as a small combustion cannon to blast out paint or whatever a short distance.

Chimps, you're idea is OK, I guess. It's not portable enough and would take too much effort to go and build, plus, it wouldn't be reusable.

Chimps, do you really think this is all I have? I've got loads of ideas, this was a shot a cheap and practical idea. You don't have to prove anything.