Pablo Posted August 23, 2006 Report Share Posted August 23, 2006 I've had an idea for a grenade launcher project using a 40mm gas grenade. The idea came to me when I was doing a spot of plumming, and I realised that the white plastic waste pipe I was using was 40mm. I was wondering if anyone had tried using this to make a grenade launcher, and how succesful it had been. If no-one else has, I'll let you know how I get on. My idea is to make a grenade pistol based on a Magnum revolver frame (which I already have). Thanks in advance! Link to post Share on other sites
Melonfish Posted August 23, 2006 Report Share Posted August 23, 2006 SNAP! just replaced the bathroom and i've got a section of 40mm myself. afaik they don't make the gas grenades to 40mm though, incase someone tries to modify the launcher to fire real ones i think. i know madbull do anyways but not sure about others. pete Link to post Share on other sites
Hedganian Posted August 23, 2006 Report Share Posted August 23, 2006 Yes, they're actually 37mm, I believe. Link to post Share on other sites
dannyboy Posted August 23, 2006 Report Share Posted August 23, 2006 All of mine are 41mm, give or take 0.04mm Link to post Share on other sites
Pablo Posted August 23, 2006 Author Report Share Posted August 23, 2006 I've just popped into Airsoft Armoury in Cannock and measured the Madbull ones (they even lent me a set of electronic calipers!). The width of the widest part was 41mm, the rest was 39mm. The rim at the rear (no sniggers) was 45mm. Hmmm. I'm gonna cut a length of tube tonight and take it in for comparison. Working next door to an airsoft store can be pretty convenient sometimes. Link to post Share on other sites
dannyboy Posted August 23, 2006 Report Share Posted August 23, 2006 The widest part is where I measured Made sense, as it needs to fit at it's widest point. And digital verniers make life a whole lot simpler for things like that Link to post Share on other sites
Glenn Posted August 23, 2006 Report Share Posted August 23, 2006 Unless things are different across the water...pipe sizes are decieving. Here in the US, 2" pipe is less than 2" ID, more than 2" OD. This is true for pretty much any pipe type out there. I'd guess 40mm pipe isn't 40mm ta all...but things might be different in your neck of the woods. Link to post Share on other sites
Melonfish Posted August 23, 2006 Report Share Posted August 23, 2006 in england 40mm pipe is 40mm internal and a bit over external. fun getting your bathroom plumbed in with 40mm and 32mm waste pipes black alkathene 22mm to copper 15mm and copper for the hot going from 15-22 and back to 15 again for some unknown reason.... though about doing a LAW but i'd need drainpipe at least as you can't get domestic 66mm piping. meh. pete Link to post Share on other sites
massacreman Posted August 23, 2006 Report Share Posted August 23, 2006 how would you get this to fire, it's easy enough getting the pipe, but the whole trigger mechanism. is it just a simple hammer trigger, i have never really seen a airsoft shell in real life, so i'm not sure Link to post Share on other sites
Pablo Posted August 23, 2006 Author Report Share Posted August 23, 2006 That's the easy bit. A small stud driven into the valve on the back of the shell fires it. The hammer mechanism on my Magnum works, but the hammer is broken (damn pot metal rubbish). It should be pretty easy to rig something to do that though. Link to post Share on other sites
massacreman Posted August 23, 2006 Report Share Posted August 23, 2006 That's the easy bit. A small stud driven into the valve on the back of the shell fires it. The hammer mechanism on my Magnum works, but the hammer is broken (damn pot metal rubbish). It should be pretty easy to rig something to do that though. <{POST_SNAPBACK}> Ah, i see, you've interested me alot in this now, i think my dad has 10 ft of 40mm pipe out in the garage, i can see not just one being made, what magnum do you have ? a cheap spring one? what would work, a cheap springer ? Link to post Share on other sites
bullzebub Posted August 23, 2006 Report Share Posted August 23, 2006 you could just use a lever too... after all its possible (and easy) to fire a moskart with your finger... Link to post Share on other sites
evansy Posted August 23, 2006 Report Share Posted August 23, 2006 you could just use a lever too... after all its possible (and easy) to fire a moskart with your finger... <{POST_SNAPBACK}> too easy to set off if you ask me. I nearly took some guys head off with a moscart once serves him right for having it near the bad end of my m203 tho. Link to post Share on other sites
Melonfish Posted August 23, 2006 Report Share Posted August 23, 2006 you could build a simple block imagine an L shape the top is the rail connector the back part is the block with the firing mechanism. the barrel slides along the long part of the L. if i haven't lost you here good. now the block at the back can have a push button effectively a nail or tube with a spring holding it back. you press it which pushes the trigger on the moscart. i.e. copy what badbull did. pete Link to post Share on other sites
Pablo Posted August 23, 2006 Author Report Share Posted August 23, 2006 Right, here's an extremely lame picture created in Paint just to give you an idea of what I'm thinking of doing: The Magnum I have is an old blank firer with a missing hammer (which is a shame, 'cos the hammer would have been handy). It may be possible to arrange something using the trigger mechanism, but if not I can always have a push button mechanism where the hammer would be. Obviously I'll need to figure out how to load/unload it, probably with either a hinge or a sliding barrel. Link to post Share on other sites
massacreman Posted August 23, 2006 Report Share Posted August 23, 2006 ok, i'm interested in making an M79 replica, i'm just conjuring up an trigger mechanism, whe n you say you can fire it with your finger, what do you mean just push the end adn it's that easy? Link to post Share on other sites
SlappyBag Posted August 23, 2006 Report Share Posted August 23, 2006 Grenade Launcher? Thats cool, but a mortar would be amazing. Link to post Share on other sites
massacreman Posted August 23, 2006 Report Share Posted August 23, 2006 Grenade Launcher? Thats cool, but a mortar would be amazing. <{POST_SNAPBACK}> Uh, i disagree grenade launcher is more badass btw i searched the forum to find this link, this guy made his own M79 http://www.arniesairsoft.co.uk/forums/inde...ic=55636&hl=m79 Link to post Share on other sites
SlappyBag Posted August 23, 2006 Report Share Posted August 23, 2006 A mortar would be good as nobody else has done it, or at least its seen alot less often then miniguns and rocket launchers.... Link to post Share on other sites
Pablo Posted August 23, 2006 Author Report Share Posted August 23, 2006 Yes, a mortar would be lovely, as would an M79, but that's not what I'm doing. I'm not looking for alternative projects at the moment, I'm just looking for help with this one. Thanks anyway. Link to post Share on other sites
evilliboba Posted August 23, 2006 Report Share Posted August 23, 2006 Thou hast inspired the evil inside. I think I'm going to rig myself up a reloadable rocket with some of those new CA 18 rounders. How hard would it be to rig up a trigger mech so that I could fire it without using up a gas pistol. This one project I think I'll put my mind to. Link to post Share on other sites
Beta Posted August 23, 2006 Report Share Posted August 23, 2006 I made this exact same thing about four months back. It works and everything but you'll need a strong hammer spring to fire the shell, this has limited mine to single-action only. I find it much easier to connect the trigger directly to the firing pin/bolt (mechanically, not literally.) The biggest challenge I came across when making this was designing a simple way to lock the barrel into place while allowing it to hinge open for reloading. Link to post Share on other sites
Sh0ty Posted August 24, 2006 Report Share Posted August 24, 2006 Do the nades have anykick? (sorry for the hi-jack, but I might custom design and build a grenade launcher, and I'd like to know if there's a kick, so I can design a system to get me the most kick.) -Sh0ty Link to post Share on other sites
liquidflorian Posted August 24, 2006 Report Share Posted August 24, 2006 Their is a guy who plays at our feild with something similar to that and it kicks so much *albartroth* it isnt' even funny. Good luck with it! Link to post Share on other sites
massacreman Posted August 24, 2006 Report Share Posted August 24, 2006 well, if you can find a replacement hammer, it should work Link to post Share on other sites
Recommended Posts
Archived
This topic is now archived and is closed to further replies.