Introduction: Knex Two Stage Railgun

Picture of Knex Two Stage Railgun

This is a mini version of something that PerfectDuck had invented.

How it works:
The big block trigger on wheels is pulled back to the back of the gun where it is locked in place by the main trigger. Then the firing pin is pulled back on the block trigger and the block trigger's trigger is locked in place. When the main trigger is pulled, the block trigger is pulled to the front of the gun by the rubber bands connected to the crossbow arm and then the block trigger's trigger is pushed out of the way by the green connector on the side of the gun and the block trigger shoots. This gives the bullet, which is in the block trigger, two times the momentum of a regular gun, thus maximizing ranges.


TwistedParadox (author)2009-08-13

How many times does it not work out of ten?

jollex (author)TwistedParadox2009-08-13


J Moneyman (author)jollex2009-08-13

lol. i don't get it, isn't a rail gun automatic?

knexguy (author)J Moneyman2009-08-14

A railgun in the true sense of the word is a series of very strong elecromagnets, cooled so they are superconductors. They are then turned on and then off again quickly in sequence, propelling a ferrous projectile very fast.

genetichell (author)knexguy2011-08-24

Erm... No, I don't think so... What you mean is a gauss gun. There you have some coils around the barrel of your gun that attract a projectile and then deactivate in order to shoot the projectile. A railgun consists of two or more rails inside a magnetic field, through which you discharge a capacitor. This adds then fires your projectile without any kind of electromagnet, since you can just use permanent magnets. Both guns are electromagnetic weapons, but there are some differences in their firing mechanismes: Gaussguns (or coilguns) produce a magnetic pulse while railguns produce an electric pulse.

J Moneyman (author)knexguy2009-08-15

how do you make a knex gun work like that?

knexguy (author)J Moneyman2009-08-15

Erm, let me see, you hook up the plastic magnets (impossible) to a power source, supercool them so they become superconductive (not going to happen) and then use an extremely fast computer to power the (impossible) magnets nanoseconds after each other and propel the FERROUS projectile (yeah, because there are iron K'nex) out of the end. Get the idea? Incase you didn't, it's impossible. I said 'a railgun in the true sense of the word'.

knex_mepalm (author)knexguy2009-08-15

arn't plastics inducers or what was it again? I forgot the word, not a very scientific guy..

knexguy (author)knex_mepalm2009-08-16

Insulators, yes they are. I was taking the mick out of Moneyman for thinking it was possible to emulate such a weapon out of k'nex.

knex_mepalm (author)knexguy2009-08-18

well, during the process of making knex parts, you can add electromagnetic material making it a half-plastic and causing it to work, but it may be weak because there is low concentration.

knexguy (author)knex_mepalm2010-02-06

Or we could make metal K'nex.

*Evil laugh*.

knex_mepalm (author)knexguy2010-02-07

 Yes but they do not switch on and off and will cause the gun to ... "self destruct"?

J Moneyman (author)knexguy2009-08-17

i'm sorry, did u just say i had mick? wtf is mick? i have a perfectly fine mick! there is nothing wrong with it! it's just as good as anyone elses mick!

knexguy (author)J Moneyman2009-08-17

Cockney rhyming slang for 'taking the piss'.

J Moneyman (author)knexguy2009-08-17

i don't want to seem annoying, but why the fu*k would someone want my piss?

Are you serious?

actually i was serious at first when i wrote the comment and i was gonna judge the responses i got to see if i wanted to say it in a serious way. so the answer is no, i was not being serious.

TwistedParadox (author)knexguy2009-08-17

Care to extend the phrase?

mettaurlover (author)knexguy2010-02-04

Actually, I've been trying to make that type of k'nex for a while. hasn't worked out too well seeing as I have no lather or metalworking tools, not to mention no metal.

bighead5454 (author)knexguy2009-12-31

nearly exactly like a gauss gun

mettaurlover (author)bighead54542010-02-04

Actually, a gauss gun is just the proper name for a railgun, but most people differentiate between them incorrectly.

TigerNod (author)J Moneyman2010-01-10

Apart from knexguy's comment, I would like to add that in fiction (mainly in computer games) , many railguns are automatic (not all of them are), but in real life, railguns are huge complex machines that take ages to reload.

knexguy (author)TigerNod2010-02-06

They could be quicker to reload but they are mainly being developed as naval artillery, so they fire huge rounds.

DJ Radio (author)J Moneyman2009-08-13

He is saying that it fails 0/10 times.

i though so to my gun is full auto its gonna shoot blue rods and it dosent have a motor

Sketch98 (author)2011-06-18

A gun inside a gun! Gunception

apples!!!!! (author)2011-05-26

I really like this idea. I might try it myself.

B3ND3R10 (author)2011-01-05

That's not a railgun... just something awesome made out of KNEX!

182515 (author)2010-04-15

I just want to makeshure that i have the idea right. The big gun basically fires the small block trigger gun wich as its moving fires, therefore giving the bullet around twice the momentum. Right?

mettaurlover (author)1825152010-07-06

Exactly. Now imagine this as a three-stage gun.

MrSillyGuns (author)mettaurlover2010-09-06

how 3? a giant thing that propells a littler one that propels a littler one that shoots?

mettaurlover (author)MrSillyGuns2010-09-06

Yeah, pretty much.

MrSillyGuns (author)mettaurlover2010-09-06


KnexFreek (author)2010-03-17

Did it work at all? THIS GUN IS EPIC. Wonderful idea. 5 stars.

jollex (author)KnexFreek2010-03-17

This version didn't work.  The second version I made worked averagely.

Sketch98 (author)jollex2010-07-20

where is the second version?

KnexFreek (author)jollex2010-03-17

 Either way, the idea is incredible.

Shaythegoon (author)2010-03-22

Thats great man 5*   plz post instructions would make a great build.    its huge compared to my little pistols   apart from my browning that i don't know if i should post?

mofyojojojjoyea (author)2010-01-09

must add, I see a huge lego project, thats all

mofyojojojjoyea (author)2010-01-09

i dont see any instructions, so I don't understand it

bighead5454 (author)2009-12-31

post plz

ILIKEPIE333 (author)2009-09-10

All this looks like is an oversize repeating crossbow, but I will say it does look cool.

KnexFreek (author)ILIKEPIE3332009-09-14

this is not by any means shoot fire or look like a repeating crossbow

ILIKEPIE333 (author)KnexFreek2009-09-14


KnexFreek (author)ILIKEPIE3332009-09-14

ok fine

KnexFreek (author)KnexFreek2009-09-14

but it does look sweet :)

jollex (author)ILIKEPIE3332009-09-10

And it's not repeating.

ILIKEPIE333 (author)jollex2009-09-12

I thought so

Raikou-san (author)2009-08-16

So it basically uses the block trigger barrel as an attached crossbow "bullet", but the "bullet" doesn't come out of the rail-barrel, but the real gun is the "bullet" of the crossbow? So basically, it's a gun propeller than automatically pulls the block trigger on the block trigger barrel/rail-barrle bullet?

matstermind (author)2009-08-15

are you going to post?

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