Knex Two Stage Railgun by jollex
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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.
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Sketch98 says: Jun 18, 2011. 11:39 AM
A gun inside a gun! Gunception
apples!!!!! says: May 26, 2011. 7:37 PM
I really like this idea. I might try it myself.
B3ND3R10 says: Jan 5, 2011. 2:31 AM
That's not a railgun... just something awesome made out of KNEX!
182515 says: Apr 15, 2010. 5:48 PM
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 says: Jul 6, 2010. 12:52 AM
Exactly. Now imagine this as a three-stage gun.
MrSillyGuns says: Sep 6, 2010. 12:30 PM
how 3? a giant thing that propells a littler one that propels a littler one that shoots?
mettaurlover says: Sep 6, 2010. 1:26 PM
Yeah, pretty much.
MrSillyGuns says: Sep 6, 2010. 1:45 PM
hmm
KnexFreek says: Mar 17, 2010. 4:14 PM
Did it work at all? THIS GUN IS EPIC. Wonderful idea. 5 stars.
jollex (author) says: Mar 17, 2010. 5:19 PM
This version didn't work.  The second version I made worked averagely.
Sketch98 says: Jul 20, 2010. 8:24 PM
where is the second version?
KnexFreek says: Mar 17, 2010. 6:26 PM
 Either way, the idea is incredible.
Shaythegoon says: Mar 22, 2010. 12:03 PM
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?
TwistedParadox says: Aug 13, 2009. 10:19 AM
How many times does it not work out of ten?
jollex (author) says: Aug 13, 2009. 11:10 AM
0.
J Moneyman says: Aug 13, 2009. 12:10 PM
lol. i don't get it, isn't a rail gun automatic?
TigerNod says: Jan 10, 2010. 9:04 AM

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 says: Feb 6, 2010. 3:49 AM

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

knexguy says: Aug 14, 2009. 9:26 AM
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 says: Aug 24, 2011. 2:29 PM
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.
bighead5454 says: Dec 31, 2009. 1:22 PM
nearly exactly like a gauss gun
mettaurlover says: Feb 4, 2010. 7:05 PM
Actually, a gauss gun is just the proper name for a railgun, but most people differentiate between them incorrectly.
J Moneyman says: Aug 15, 2009. 8:15 AM
how do you make a knex gun work like that?
knexguy says: Aug 15, 2009. 10:32 AM
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'.
mettaurlover says: Feb 4, 2010. 7:06 PM
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.
knex_mepalm says: Aug 15, 2009. 10:54 PM
arn't plastics inducers or what was it again? I forgot the word, not a very scientific guy..
knexguy says: Aug 16, 2009. 2:19 PM
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 says: Aug 18, 2009. 3:27 AM
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 says: Feb 6, 2010. 3:48 AM
Or we could make metal K'nex.

*Evil laugh*.
knex_mepalm says: Feb 7, 2010. 12:37 AM
 Yes but they do not switch on and off and will cause the gun to ... "self destruct"?
J Moneyman says: Aug 17, 2009. 6:05 AM
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 says: Aug 17, 2009. 9:23 AM
Cockney rhyming slang for 'taking the piss'.
J Moneyman says: Aug 17, 2009. 10:16 AM
i don't want to seem annoying, but why the fu*k would someone want my piss?
TwistedParadox says: Aug 17, 2009. 10:18 AM
Are you serious?
J Moneyman says: Aug 17, 2009. 12:18 PM
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 says: Aug 17, 2009. 9:33 AM
Care to extend the phrase?
DJ Radio says: Aug 13, 2009. 8:17 PM
He is saying that it fails 0/10 times.
knexsuperbuilderfreak says: Aug 13, 2009. 12:26 PM
i though so to my gun is full auto its gonna shoot blue rods and it dosent have a motor
mofyojojojjoyea says: Jan 9, 2010. 8:59 AM
must add, I see a huge lego project, thats all
mofyojojojjoyea says: Jan 9, 2010. 8:58 AM
i dont see any instructions, so I don't understand it
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