SpudFiles

Hi all
I had this idea since last summer, but didn´t have the courage to build it, as I don´t know if it will work
So here it´s a diagram, now my worries are:
1. No enough air to shot all the bbs, even with high pressure chamber
2. Only part of the bbs will be launched, rest remains because all the air has scaped by firing part of the bbs;
3. Low range.
But in case it work, it would be a brutal airsoft ammo, imagine fire it with a homemade combustion grenade launcher, it will be possible to hit hidden targets (behind a tree for example).
The diagram it´s just a idea, the body would be made out of soft wooden material, like cork. Also it would be aerodynamic.
For internal, I´m thinking about aluminium, as it´s light than brass.

How many launch tubes and shots per tube? I can see this working, but launching the grenade is dangerous. A mine or boobie trap would need angled launch tubes or you'll be aiming at ankles but would be safer then a launched grenade...

wyz2285 wrote:So here it´s a diagram, now my worries are:
1. No enough air to shot all the bbs, even with high pressure chamber
2. Only part of the bbs will be launched, rest remains because all the air has scaped by firing part of the bbs;
3. Low range.

No need to worry, I think it would work brilliantly if you could guarantee a hit on a hard surface.

your biggest worry should be:

4. I might seriously injure someone if this hits them directly.

I can't see all those components put together in a packade with sufficiently low density to prevent serious injury from a direct hit in a 40mm grenade size package. You'd have to wrap it in soft foam till its the size of a Javelin...

To make sure it "ignite" I will use a launch angle above 50 degrees, also the launcher l'm thinking about would be a weak combustion 0.3l chamber maybe. Esferovit would be a good material to use.

I would use a PET bottle for the chamber, it's strong and light. Also, I'd put all the worky bits at the back, so the bottle will offer a large "crumple zone" in case it should strike anyone. You should have the striker hit the valve by inertia, that way it won't be accidentally activated by the shock of firing it out of the launcher.

Assuming you can only shoot hard targets [walls] to begin with, you can get some decent "splash damage" from a ping pong ball filled with bb's. Fits in 1.5" sch40 IIRC. I had some fun with that years ago.

Exactly, a PET bottle was my first though, specially I have a really strong one (has about 3 times more wall thickness than a coke bottle). In real case I would definitely build a safety devise for the cap. I have to keep the main functional stuffs in the front in order to secure the fly stability. I'm thinking about low speed high angle launches and the grenade will mostly used in soil ground, so a ping pang ball filled with bbs probably won't work.

A possible improvement...

That probably won't do any good, the flow is the same as the exits are the same, a bigger inner tube will only diminish the chamber volume, also a bigger pilot volume.

Just a thought but how would you assemble and fill the shells?

epoxy, shock pump

I know the whole concept of M79 and M203 launchers is quite appealing to the masses, but there are several things you must consider when building such a devise to use in games; the primary issue is safety. What works good in theory may not be such a great idea in practicality. If there is even a small chance for someone to be struck with these, you should rework the entire unit or just scrap the idea all together.

Another factor is cost of these to build (in time and money value). Consider the idea that for every two you build, you might get one back. This means that they will constantly have to be replaced. If it takes you three hours to build and costs at least 5 bucks a pop, but only offers 5 feet of elimination coverage, it may not be worth the effort.

And then you have the effectiveness of the unit. You are already doubting this factor, and that should raise a flag. I've built many, many similar items in the past but the most effective designs I've built and used always tend to be the most simple ones.

Davidvaini came up with a fantastic design for an Airsoft grenade that I think you may be interested in. It is a thrown devise rather than a launched one, which (to me at least) offers more benefits. Check it out.

I know Davidvaini´s grenade launcher, the problem is I can´t get a co2 pump to trigger the burst disc. For this project what I really want it´s just the idea of really shot a projectile, instead of a fake grenade that only the bbs come out.
Well I belive these grenade could dure quite long, probably I will only have to replace the esferovite shell. For airsoft games, people use eye protection etc, I think this grenade won´t generate much more energy than a close range paintball shot. And I was hoping the grenade to by a psychology weapon too, to give my enemy an idea that them could be hit even if they were hiding in a shelter, when they hear the launch noise of my combustion launcher

I was talking about the grenade, not the launcher. It may not have been his though. I'm not sure. It had a trigger that is a cap you twist on and it goes off bout four or five seconds after.

For what it's worth, I'm not trying to criticize or discourage your project. I've got quite a bit of experience with grenades, mines, etc for both paintball and airsoft and was only trying to share some knowledge of what works and what doesn't.

wyz2285 wrote:epoxy, shock pump

I meant how would you fill as in how do you get to the schrader?