Instructables

concept guns

post any ideas for guns you have, and we'll discuss their effectiveness and ability.

http://www.instructables.com/id/knex-concept-gun/ its kinda like the dunkis concept
impinkm3 years ago
I am creating a gun right now. In a nutshell, it is very similar to solekill3r's El Diablo Gun, but it is an uzi with a completely removable clip, It loads by inserting blue rods into the clip and sliding it upward into the barrel. I's quite sick and the concept works on mlcad. Heres a pic. Note, the pic is only showing the hull/ frame.
TheDunkis5 years ago
I'm still trying to think up a design for a magazine and chamber where the ammo doesn't load straight up. In stead the ammo gets pushed forward out of the magazine into the chamber like in a real firearm. This would eliminate the jamming problems with rods and it would place the ammo up farther in the ultimately making the gun a lot stronger. This would eliminate the biggest problem with repeaters. My idea to do so was making a charging handle connected to a part around the pin just over the magazine. Then when you pulled back the handle to cock the weapon and you let go and it resets it would push the ammo out into the barrel. The only problem is you'd have to make either it or the trigger go around the other so that they don't interfere with each other. Probably wouldn't be too hard just making one like IaC's APs'.
solekill3r made a true bolt action sniper like that
Scrubsfan1234 (author)  TheDunkis5 years ago
I actually built a gun that had a top mag, and when you pulled the handle, the pin gets cocked, and the piece falls. Then, you push the handle forwards and the piece falls down into another chamber. Then, the pin goes off like normal. This had barely any power, and frequently misfired (the round bounced back up the chamber)
what about a gatling gun that had a removable set of barrels?
you take them out and put the new ones in. to make it less pieces you could make them 8 or 16 barreled for each set.

RPG? (rocket propelled grenade)
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i tried that, the thing just breaks. knex can't hold the pressure of pulling the rubberbands back.
darn...
Scrubsfan1234 (author)  shadowninja315 years ago
even if it was huge and reinforced? What did u do, DSman?
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hmm..... i dont have the right roller coaster track pieces... sounds like a good idea in theory
Scrubsfan1234 (author)  shadowninja315 years ago
the one thing is: there needs to be TONS!!! of power. Either use a huge ammount of knex battery motors (maybe 12?) to cock the pins, then at least 2 motors to turn the assembly. This gun will be HEAVY!!!
yeah. im not sure how to get all that many motors.
Scrubsfan1234 (author)  shadowninja315 years ago
you van order the motors online, but a crank may be the way to go.
well i know but they r expensive online
Scrubsfan1234 (author)  shadowninja315 years ago
i know! its cheaper to buy the boxes in a store
ya. shipping is like 7+ $
Scrubsfan1234 (author)  shadowninja315 years ago
plus batteries (12 motors, @ 12 a pop is $144, plus the 2AA batteries, 1bout 16 bucks... holy $***!!!)
dang... im not spending that much on motors
thanks. I thought that there was just one pin. The benefit to a gatling gun is that it is much easier to align the barrels in this case. For each round, maybe half of a killerk gun barrel, then continuing to the end of the gun. However there is one vicious trade-off: Fast rate: weak Slow: strong Whatever works best, I guess.
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Ah, there you go. we would need like 4 gear trains, and multiple axles to support the load, but I think we're on to something.
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It would be like the original ones. How do we create a mechanical release? Using a rack and pinion (sand off 1/4 of the teeth) would be tough on the gears, unless we use like four of them to distribute the weight, and then, using 6 pins would call 4 a huge action. I still like multiple barrels, but the firing pins will be difficult Let's look at how an airsoft gun works. It may not be what we're going 4, but could shed some light on the topic. I saw a video on youtube that could help. It is like the gatling gun animation, but I forgot the name.
ya.
Scrubsfan1234 (author)  shadowninja315 years ago
I agree, and as I thought for a moment, we do need all 8 (I assume) pins. if there is only 1 pin, then the spinning barrels will obstruct it!!! We do need 8, and that will be a huge gun! Just a prototype would be as large a IaC's handheld cannon! For something this big, it needs good range, or else it is a huge waste.
no i think it would be bigger
Scrubsfan1234 (author)  shadowninja315 years ago
You may be right, but by a prototype, just a small enough mechanism to pull back the pins, and have a rod leave the barrel. Who knows?
true but..... oh well nevr mind
Scrubsfan1234 (author)  shadowninja315 years ago
it will still be a huge, complex machine.
yep
yeah. maybe two rotating barrel things with 1 crank? double the speed
ya
Scrubsfan1234 (author)  shadowninja315 years ago
a gatling gun seems ineffective to me. a chaingun seems more appropriate unless 1 firing pin is used, and that may require an alternate cocking method (model car motor?), but id like to see one made!
yeah. im not sure, it just would sound cool having a removable set of barrels. i dunno though...
Scrubsfan1234 (author)  shadowninja315 years ago
it sounds cool, and if we could achieve the speed and the power, then it would save pieces. I saw a vid on youtube on how a real one works, and it may give you some ideas. I don't have the link, but it is an animation, and should be pretty easy to find.
yeah. ok ill try to find it
Scrubsfan1234 (author)  shadowninja315 years ago
I can picture the setup, but the firing pin would need to go off really fast, like use multiple motors to pull a string that releases at a certain point, or: each piece comes in a chink of barrel, with a rubber band on the front. Then, a motor pulls the band to the front of the barrel, and releases a trigger, senfing the bullet down the barrel.
ya
Scrubsfan1234 (author)  shadowninja315 years ago
dud u see it? any suggestions?
wow... do u think its possible?
is this it: vid
Scrubsfan1234 (author)  shadowninja315 years ago
that was it, and it may be difficult and inefficent, but hey, its just for the concept.
yep. it looks cool too. if we ever make something like that, we need to look at the vulcan nerf gun. that might help. also i would want to be able to see the action.
Scrubsfan1234 (author)  shadowninja315 years ago
to knexguy, the trigger could be either a slingshot, and when the roumnd is added, the bullet goes off, or the way you suggested. to shadowninja: I see what you mean, and as for seeing the action, we would have to decide if it is worth the better chance of misfire, or if closed: harder to fix if it misfires.
yeah. i think seeing the action would be cool, thought it might be more prone to jammimg. if it wasn't visible it wouldnt jam so much but it would prob. jam worse when it did. yes i agree.
The only hard bits would be a trigger mechanism and creating the back/forward motion of the bolts, the could run on spiralling rails though. Oh, and the loading system could be buggy, with rounds falling out and the like.
Scrubsfan1234 (author) 5 years ago
could somebody please rate this forum
5*
Scrubsfan1234 (author)  DJ Radio5 years ago
thanks
DJ Radio5 years ago
I have an idea for a retractable sight, you pull the pin, and a sight pops up. However, it will require a lot of parts on the body alone.
Scrubsfan1234 (author)  DJ Radio5 years ago
why does it require lots of parts? I see it as killerk's srv1 sight on a rubberband-loaded arm that pops up when the pin is pulled out of the socket. btw, why a rectractable sight? one that doubles as a handle seems pretty useful.
you need a large-ish body to house the sight. not to mention the other parts. it would pop-up via springs beneath the sight. and its not killerk's sight.
Scrubsfan1234 (author)  DJ Radio5 years ago
not to seem mean, but whats the point? I see how it would work, and I imagined the sight either flipping up, or coming up like the screen on the Tmobile phone the G1 (google it if you anent familiar) out of the stock.
Scrubsfan1234 (author) 5 years ago
i have an idea for a real shotgun, which uses yellow rods with the tips cut off, then gray connectors on top, and red ones at the end. Should fit four green rods. the red ends would slide up a groove in the mag, then when pumped, eject like real shells.
I've made a shell where it's rounds and it will hold more green rods in a length than most tube shells. I haven't figured out how to make a magazine for it but it is just a concept for now.
Scrubsfan1234 (author)  TheDunkis5 years ago
look @ how i described mine, a mag that oens @ each end before the front, creating 2 tracks for the shell to ride on. the pump on a knex gun isn't too hard to pull, so adding a mechanism that cocks another pin on the side with a yallow connector on the end wouldn't be too hard to pull, and would eject the shell. The only problem is making it so the firing pin goes off before the ejection.
Scrubsfan1234 (author)  Scrubsfan12345 years ago
as a side note: designs for a shell ejector? mine is, use the forward movement of a pump action gun to move a finger on a pivot to knock the shell out of a hole like a real gun. Remember to clean up!
i have a shotgun made
Scrubsfan1234 (author)  Katarukito5 years ago
does it eject shells? How did u do it?
yes they do eject shells and its on one of my instructables.
Scrubsfan1234 (author) 5 years ago
For semi auto: they are a pain to reload, so maybe attach a pump to turn the wheel, and make things run smoother. Another idea: removable apparatus Carry around the gun's handle, mag, and bottom of the barrel (and maybe pump?). Then, through the top, add the wheel (already wound , or use the pump to do so) and top part of the barrel. You should be set for 7 shots.
Scrubsfan1234 (author) 5 years ago
I believe that bottom mags are best. it is easiest to make an uzi mag, or something simple like that. But, an angled design is much more complex. I have seen them done in handguns, but one that curves midway would be cool. Th do this, use roller coaster tubing to connect the top and bottom. then, continue as normal. Should produce an AK-ish mag. second, a removable mag is an interesting topic removable pros: easy to reload!!! realistic easy to troubleshoot cons: lower capacity (easily fixed) troublesome fixed pros: capacity simplicity reliability more versatile cons: hard to troubleshoot pain to reload
Scrubsfan1234 (author) 5 years ago
think of an M16/M4 gun. The charging handle looks like a gray rod with a yellow connector with 2 greens on each side. My idea is that it could be hooked up to a mechanism to lock in a mag. Then, add a pump and a bottom mag, and you're set.
Scrubsfan1234 (author) 5 years ago
I like pump action a lot because it is (in my opinion) the best method of building a larger gun. Here's why: normal: too slow semi: pain to reload auto: huge and bad range sling: only good for long range pump: fast reload, great potential for multiple functions, decent range
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