K'nex Concepts

This instructable is to show k'nex ideas so that others can try to build them. They are going to be mostly weapon ideas.

Sections

Step 1- Ammo Feeding
Step 2- Triggers
Step 3- Barrels
Step 4- Firing Pins & Pulls
Step 5- Grenades
Step 6- Guns
Step 7- Miscellaneous Weapon Designs
Step 8- Miscellaneous Non Weapon Designs
Step 9- Real Life Weapon Designs
Step 10- Concepts In Progress
Step 11- Stuff That's Been Done
Step 12- Completed concepts

If you have any questions, would like a more detailed explaination or more pictures for a peticular design please ask.

Each picture corresponds to a letter and 2 numbers, the first letter is the section, the first number is the picture number, and the second number is the design number.

Similarity to any other design is coincidental. If you use any of the ideas from Knex Concepts, you must give the designer credit for their idea on the intro step of your instructables and slideshows.

Tell me if you post an instructable using one of these concepts, if you successfully construct one of the concepts, I will rate an instructable including it five stars.

SHARE YOUR KNEX IDEAS HERE:
http://www.instructables.com/community/Your-Knex-Concepts-Share-your-ideas-here/

Step 1 Ammo Feeding

1A1: Staircase Hopper: This hopper uses 90 degree angles instead of a funnel so that ammo cannot jam. -by Oblivitus (credit to cj81499 for the visual)
2A2: Hopper Revolver: This design uses 8 straight line hoppers (which are jam free) on a revolver to conserve vertical space. -by Oblivitus
3A3: Horizontal Magazine: This mag stores ammo in a line parallel to the barrel and turns it up through a curve into the chamber for firing. -by Oblivitus
4A4: Auto Feed Magazine: This is a new mechanism that will release a loaded mag upon inserting it into the gun. This picture shows the magazine before insertion. The green lines in the picture are elastic bands. Read the note. -by Oblivitus
5A4: Auto Feed Magazine: This picture shows the magazine after it has been inserted. Read the note. -by Oblivitus
6A5: Non-Interlock Magazine: This magazine feeds one round into the chamber at a time to prevent the grooves in rods from locking together. Interlocking k'nex rods reduce power so this magazine will be more powerful than others. -by Oblivitus
7A6: Detachable Mag Handle: A pistol with a detachable handle that is also a magazine. -by Oblivitus
8A7: Thin High Caliber Mag: A blue rod magazine instead holds yellow rods at an angle to save space. -by Oblivitus
9A8: Tilted Horizontal Mag: Rounds would be pushed along by an angled mag pusher. This design saves space and therefore increases capacity. -by Oblivitus
10A9: KKAR: KillerK's new ammo magazine. This magazine allows lots of ammo in a small space, and was inspired by the Peacemaker Carbine from Bulletstorm. -by TheFoofinator
11A10: Spiral Drum Mag: Drum mag with two rods that rotate in one direction to push rounds to the outside of the spiral and into a firing chamber. -by Oblivitus
11A11: Layered Drum Mag: A drum mag with multiple layers that fill the entire space within the drum which both rotates with an elastic and is pushed up by an elastic. When the outer layer is emptied of rounds, the drum moves up and the next layer begins emptying. This layer changing would be achieved by making the rounds press upward against a flat surface on the gun. -by Oblivitus

Comments

[KnexFreek]

Might as well mark me down as all of them. I could have built any one i wanted, i just deemed some not innovative enough to WOW people. :) just concentrated on the aweome ones.

Yo i gotta say tho, i would have never even tried if it weren't for you. Thanks

[Oblivitus]

Thanks. I'm just glad someone took to my ideas. It's surprisingly satisfying for me to see my them made real, even more than if I made them myself (maybe because I'm not self critical of them). And I enjoy coming up with things.

Would have never even tried? Do you mean to say that if you hadn't seen my ideas, you wouldn't have gotten into knex guns? If so, that's a great compliment and I thank you.

[Drew99-KGB]

I got mag thing number to done. The one with 8 mags on the spinning thing like a revolver. Mine only has 4. I couldn't make 8 because where the 5th, 6th, 7th, and 8th mags would be, I had to put something to keep the bullet in place to solve a jamming issue. Each one can hold 15 bullets but I only put 12 in at a time to solve another jamming problem. All together mine has 48 rounds in it.

[Oblivitus]

Cool. It'd be great to see that on a gun.

[Drew99-KGB]

lol "Hint! Hint!" I will put it on a gun and post but right now working on a machine gun so I had to take it apart but don't worry I took lots of pictures of it first so I can rebuild. I could put it on my machine gun but I would rather not right now. Maybe later as like an extra mod option.

[ihaveguitarskills!]

AWESOME. I have a question. Were did you get all these Knex? I really want some, but am really low on money.

[Oblivitus]

Ebay. Search "pounds of knex" and sort by lowest price first.

[KnexFreak360]

I believe that this would be the most efficient way to build a knex bow!
http://vintagemartinguitar.net/files/2011/04/-111002707349574210.jpg

[GASSYPOOTS]

uhh dude your 8 barreled gun is mased off of my 3 barreled gun

[Oblivitus]

That's assuming heard of it. I haven't. Perhaps they're similar, but I haven't seen it. Would you mind giving me a link to it?

[KnexFreak360]

Here's my semi auto concept, but it needs to be geared up. I wanted to know if you think it would work?

[Oblivitus]

Oh it can definitely work. It's getting enough power to fire it with a lot of range that's difficult.

[KnexFreak360]

Also if you have any suggestions please let me know that would be very helpful!

[Oblivitus]

You'll need a lot of motors or at least a few of the powerful ones to be able to get decent range with this. You will most likely need to make a few or several versions of it or even change the design entirely to reach it's max potential. My advice is to persevere and not stop working until you've completely exhausted all possibilities. When you approach a project this way you will either create greatness or double your knowledge in your failure. You can't lose.

[KnexFreak360]

Ok thanks, do you think 2 of they large gray motors will be fine?

[Oblivitus]

Maybe. I've never had one before and I don't know how much power this gun will need to work well but I do know it'll need all the power you can get. You may also want to consider an elastic coil like the one on my SA 3252. That's another way to get lots of power, but has a very limited number of rotations and is mechanically complicated as well as complex in its physics.

[KnexFreak360]

Yea, i have the motors now all I need are some gears.

[dmytro509]

ill use the third mec i think that the gun i make will be very revolutionary for knex builders

[rofl495]

you should add this pic for the rear sights

[didexo]

I made the double mag its posted check it out

[knexbuild]

Would the Non-Interlock Magazine work?

[Oblivitus]

Someone tried making it once but it didn't increase range or power in their version of it. The concept is theoretical. I can't guarantee you'll get results.

[knexbuild]

On what gun was it used?

[Oblivitus]

You can find it on the last step.

[JJ8090]

I hope you dont mind (though i know you wont) if i use the hopper revolver thingy?
it will be my first gun so i intend it to b good :)

[Oblivitus]

I want people to use these ideas, that's why I posted them. Just give me credit by mentioning my name and which of my ideas that you used. Thanks. :)

[cazadactle]

The tilted idea didn't work when I tried it on my pistol (it doesn't load properly into the chamber). Also although I think these are extremely good ideas i'm not sure that youwould be able to fit these pieces that they use into a compact gun (for instance the auto feed mag would be very hard to make into a compact design :( ).
But still, it all looks great though!!!

[knexsuperbuilderfreak]

well after going through some different ibles and here i haven't found something that can fuel my new gun D: it is a brand new style but i need a way to have a set of gears turn for the ammo to get to the point of firing it all i have is a tr spinning design and i need about 2-3 times that of a tr spiner thing. i have tried i huge sling with a semi auto mech on it to spin it but it was to much and the ammo got messed up. any ideas?

[Oblivitus]

I'm not sure what you mean. More explanation with drawings would help.

[knexsuperbuilderfreak]

well as i try to draw this this is basicly the best i can get. i have a gun with a turning mech like on the TR guns that rotate the turret but for me it rotates gears on that rod to feed ammo into place to fire a motor cant be used because the rod the gears are on needs to stop once the ammo is in place and then move when it is fired to the next one also the TR style of rotating dose not produce enought torque to move the ammo into place.

[Oblivitus]

Okay, I understand what you're doing now. I'm still not sure if I can come up with a solution without seeing something, but I'll throw out an idea. Do you think an elastic spool would work? (a wheel or wheel shaped construct that an elastic can be wound around to get rotating force)

[knexsuperbuilderfreak]

well i just tried a mech that is 2 white cons with 4 white rods on it and a rubber band hooked to a white rod and the bands go above and wrap around a bit but it dosent like to wrap to well

[wabawaba]

Omg I just hatched the greatest idea, what if there was a type of vertical slide and u had a bunch of knex guns like in a circle or on a belt, and to pull back the pins everytime it makes a round around the the vertical slide pushes the pins at the end of the slide it ends going back up and the gun on the belt shoots. I'l try to get some pics I think it would make a powerful full auto

[verypoopy]

Here it is.

[Oblivitus]

Cool. Do you mind if I add this to the instructable?

[verypoopy]

Nope that's fine if you put it up

[verypoopy]

I'd like to see mech #3 (Horizontal Mag) turned into a pump action shotgun. I've made something similar in a mech where you load the shotgun shells in like a real gun and they are held in by a door release with pressure on them to go out of the mag with rubber bands. Then, when you pump it, it catches one of the bullets while cocking the ram back, shooting one of the bullets. I couldn't get the pump to catch the bullets to go into the barrel though, so i'm wondering if anyone could help. Here's a pic.

[Holmes101]

wow u r a genius

[Oblivitus]

Thank you very much. I see you're new here. Well, if you're going to make your own knex guns, you're in the right place. Lots of ideas here. Some of them may be easy enough for a beginner. But if you're looking for a good first gun, my UP3 is worth taking a look at; http://www.instructables.com/id/UP3-Knex-Pistol/ My instructions are easy to follow on this one and it's a pretty easy build. Gets 50 feet of range.

[Polarize]

Hey, i recently had this concept for a semi automatic slingshot. I realize that slingshots are already semi/fully automatic, but this idea is for one that fires every time you pull the trigger. It could also probably shoot multiple burst rounds with no reloading.

Anyway unfortunately i don't have enough pieces to finish it, and it didn't seem worthy of an instructable, so i thought this would be a good place to put it. If someone could make this idea into a real gun i would be happy :)

It uses my RBG i made years ago on another account http://www.instructables.com/id/Semi-auto-rbg-pistol/

Here are some picture of it. Basically when you pull the trigger, the cogs turn, and push up the mechanism at the back, pushing the oodammo off like an ordinary slingshot. (btw, i actually was the first to ever post a gun using oodammo, check bunduks account ;) still oodalumps has the credit for realizing its great potential :P) The mechanism moves up a few places at a time, thus putting burst fire into the picture.