You Are Here: Home » Old Forums Archive » Computers » Railgun


— Posted by r3ntin on 6:37 am on Nov. 26, 2001

ok..i know its pretty useless, but anyone tried to make a railgun? I know high voltage is needed, and that capacitors are used. The one i saw needed these like massive batteries. Once the voltage is attained, how does one set up the rail?

— Posted by Sicopath on 5:52 pm on Nov. 27, 2001

Well, to make a railgun, you’ll need plasma heaters, trip lasers and a piece of extremely dense metal (Uranium) are you still up for it?

— Posted by xoarj on 7:19 am on Nov. 28, 2001

i have a rough idea, but this is it ill try to draw it

/////////     //////////
–                  +     +                    –
two springs and there is a rod down the centre of each one has a stopper so that it doesnt leave the inside of the spring then you have the charge es thus the – & + turnit on and it creates a magnetic feild cause of the charged up springs the two rods repel each othe one stays due to the stopped and one hoons off (in theory)
thats the best i can do- sorry

— Posted by The Great Milenko on 2:08 am on Dec. 9, 2001

Phuck!! railguns!! shit i thought they were purely fiction…..thats whack…..so is it like a laser gun sorta things or sum shit?

— Posted by xoarj on 3:55 am on Dec. 9, 2001

the idea of them is to use electro magnets to hurl metal rods/poles/nails depending on the size- most people know of it due to the wonderful game -Quake-i heard somewhere that the germans made one in ww2 and it was predicted to have needed all the nuclear power plants in the usa to acctualy fire the thing there is an idea of the energy needed to get one of the damn things to work..

— Posted by balor on 2:13 pm on Dec. 9, 2001

I remembered reading about the germans railgun.IT was to be built at the French coast facing England.It was to fire relatively small projectiles (about 2-10 lbs.).If it was built it would have freed up all the bombers for somewhere else.As far as I remember it needed something about 200-1000 kw (the size of a usual generation station) to operate on, not all the energy produced by all the nuclear power stations in the USA.It was definitely never built.

(Edited by balor at 2:14 pm on Dec. 9, 2001)

— Posted by The Great Milenko on 2:03 am on Dec. 10, 2001

Awww i get it!! thats sweet i want one!!! wouldnt the military have that kind of technology today?

— Posted by Sicopath on 5:35 am on Dec. 10, 2001

err,… actually, the WWII railgun was a big cannon that runs around on railway tracks, hence the name.

— Posted by balor on 4:01 pm on Dec. 10, 2001

err,…actually the WW11 railgun that was built was a 28 cm Kanone 5 (Eisenbahnlafette) railway gun.It was known as Anzio Annie to the Allied troops.Considering that it fired normal shells, rocket assisted shells and the Peenemunde arrow shell which are all conventionally powered projectiles what relevance does this gun have with the modern(ish) idea of the functioning of a electrically powered Railgun as all they have in common is the name.You are right Sicopath it got the name because it was mounted on railway tracks.
As regards the Germans electric railgun I got the power rating extremely wrong.It needed 100,000 mw which could confirm what Xoarj said.The railgun was to fire 12 shells a minute to a range of 250 kilometers at 1640 meters per second.The barrel was to be 100 meters long and mounted at a 55 degree angle(similiar to Saddams supergun).It would fire 500000 shells and consume 54000 tons of coal a month.One single railgun would have replaced 2000 bombers daily.
Wrong railgun Sicopath!!!!

(Edited by balor at 5:24 pm on Jan. 23, 2002)

— Posted by dellexo on 7:57 pm on Dec. 10, 2001

I allways thought that a rail gun is a electronic weapon.These things are like particle accelorators but instead of firing particules at high speed ,they do it to larger projectiles,these can reach speeds of5-10km per second.As these are run on electicity the demand is huge, 100-200MW .1 MW=1000w times 1000w.These have been tested to fire satalites to space from earth.As you can see,i dont thing there is any scope for the amature to build such devices:sad:

— Posted by largeidaccam on 1:18 am on Dec. 11, 2001

is it nething like “big bertha” {another huge gun}??

— Posted by xoarj on 3:26 am on Dec. 11, 2001

You all have your mines stuck on projectile weapons using high rate combustion-gunpowder,rifle,blasting (what ever they use) as well as big bertha thats just another fucking big artillery weapon with shells, rail guns use electro magnets and large amounts of electricity to hurl shit. I’m shure it is possible to make one but if it were a more sophisticated or better weapon than a gun, wouldn’t you think that it would be used instead, if it were better than a gun then that would be the primary weapon that world wide militarys would use, obviously they dont so it mustn’t be better.
    Maybe in the future when a better energy source is invented, like some smart ass works out how to make a standard double A battery put out many killa whats then the possibilitys of this weapon would be more openly explored.

— Posted by GR3MLIN on 9:48 pm on Dec. 11, 2001

just an idea that i’ve had for a while,
you know hopefully that for quite some time, the amusment park designers have been using electromagnets to accellerate their rollercoaster cars.
well, my theory is that if ya had a piece of non conductive pipe (ie PVC) and had a series of electoromagnets along the length of the pipe, if you put a timed pulse of current throught the electromagnets, so that the field generated travels along the pipe as fast as possible, would that accellerate a piece of steel in the pipe???
or is this just a pipedream??

— Posted by saurontheevil on 10:55 am on Dec. 12, 2001

that sounds like it would work if done right

— Posted by balor on 3:58 pm on Dec. 13, 2001

The electromagnets in the pipe idea would definitely work, no doubt about it.The projectile could be a piece of steel which would be attracted to the next energised solenoid , the next and the next etc. A magnet could also be used in the place of the steel but polarity of the poles of the magnet and of the solenoid would have to be taken into account.In order for the gun to work most effectively the time between each solenoid being energised would be the tiniest fraction of a second and the solenoids being an efficient and high current design.The barrel would be extremely long too as acceleration would be relatively slow.
You could fire a projectile but if it would be of effective use is anyones guess.I think that in our state of technology we still cannot control and master electricity enough to use it in a weapon so it will be years before it becomes a viable weapon.

— Posted by xoarj on 10:52 pm on Dec. 13, 2001

Exactly..We dont have the means to master the amount of electricty needed to make a viable weapon, worth while arming our selves with.

— Posted by killabyte on 2:52 am on Jan. 16, 2002

cap the end, fill with a gas or explosive, ram in steelshot or other shrapnel, ignite fuse, take cover…. so much more effective… has a nice ‘ring’ to it too!  🙂

— Posted by balor on 3:40 pm on Jan. 17, 2002

I think a Railgun that could fire satellites into orbit or fire at orbiting space craft would have a better ring to it Killabyte.I doubt that a couple of grams of shot could do much damage to anything larger than a Pheasant or Turkey Ive done enough game shooting to know that.Using a railgun against a Turkey or Pheasant would certainly be overkill!!!!!

— Posted by phusion on 3:17 am on Jan. 23, 2002

Well this can actually be done rather easily.  You know how when you take 2 magnets and put them against a TV screen they create rings? These rings represent the electro magnetic waves coming from that polorized end of the magnet. So when you push the 2 common sides together, the rings never touch. With this same idea you can take a polorized object (magnitized nail) and put it between these two magnets, after doing this the nail theoretically should squeeze between the two magnets forcing it away.  The stronger the magnet, the fast it is pushed away. With coiled magnets, giving the nail some travel time along these magnets will give the nail a velocity.

— Posted by The Great Milenko on 7:54 am on Jan. 23, 2002

Yeah but you’d still need some pretty hefty magnets…

— Posted by dellexo on 8:00 pm on Jan. 23, 2002

What about the power supply?These things can use 1000’sMw/Gw.I suppose you could charge up a few truck loads of cappacitors for a single shot.I read about a railgun in the U.S.A. which had 1000’s of large caps charged up.The power it used in a few miliseconds was the equevelent to the power (KWhrs) that the Whole of the U.S.A. used in a few minutes.

— Posted by balor on 3:14 pm on Jan. 24, 2002

about six months ago I assembled a capacitor bank for the reduction of wattless power and thus voltage increase.The capacitor bank was across 110kv and earth and had a seperate bank of capacitors for each phase.I forget what way exactly they were wired.Each phase bank had two sides ,Everything on each side was was wired in series and then the two seperate sides were then wired in parallel so as to cope with the high voltage input.Anyway had a gigantic capacity which I cant remember but the whole project had a budget of about $3 million of which the capacitors cost about $750,000.For that you had 48 individual capacitors(2″x4″) prior to assembly.Weighed an awful lot each so 48 or even a truckload would be pushing the limits of any easily deployable vehicle today.

— Posted by phusion on 7:22 pm on Jan. 24, 2002

Cobalt Magnets even with a size of a quarter, can pick up 5-10 pounds.  Just an enlongated one wrapped in coil. Like I was saying though… this is an idea.. If it works then figure out the source.  just remember the Power is proportional to the velocity.

— Posted by moorey on 12:17 am on Jan. 26, 2002

i rekon itd have to use electro magnets.. its the only way to get ur projectile loaded… turn off the magnet… as for kW and GW… wattage shouldnt matter… Voltage is what u need for eletromagnets… the higher the voltage, the stronger ur magnets are.  just as long as ur materials of the magnet are robust enough to widthstand the massive voltage without burning out, ur only worries should be containing the electricity without it arcing at such voltages… like a massive spart/mini lighining arc.  after that all u ned to figure out is accuracy.  when u think about it, TVs can contain upwards of a hundred thousand volts.. all u need is a specifically built transformer.

— Posted by dellexo on 10:15 am on Jan. 26, 2002

Volts will do nothing without current(amp’s).Static charges from brushing hair,taking off nylon clothes nice;) ,rubbing your feet on certain types of carpet and touching some one can result in a discharge of many 1000’s of volts.But since the discharge current is so small(in the reigon of a few micro amp’s or lower) it dose no harm.On the subject of current,a electric shock of 240v @ 30 milli amp’s (1000 milliamps= 1 Amp) can prove fatal:sad:

— Posted by balor on 1:59 pm on Jan. 26, 2002

Just to clear it up moorey a coil such as an electromagnetic will burn out from excessive current flow not from voltage.That is why the coils in traffos which I service(110kv-38kv and 220kv-110kv)do not burn out as the voltage across a coil is divided equally between each wrap of the coil so the more wraps you have the less chance of an arc between loops.Also a tv can contain so much voltage because of the whole principle on which a screen is based-the cathode emitter discharges to the anode screen causing the colours which appear all of which happens in an enclosed glass container.Wattage does matter Moorey,that is why a suitable and efficient source cannot be found-the amount needed is about 100,000mw.The capacitors that I installed take a current of 80 amps at 110kv which works out between 8 and 9mw counting losses which is only a fraction of the power required.And as they are so bulky I think a railgun is a long way off.Like even if you somehow built a railgun how are you going to switch the supply to the coils,they would need replacing every couple of rounds fired or so.

— Posted by Zambosan on 12:34 pm on Feb. 1, 2002

Rail guns operate using a conductive metal projectile that contacts two parallel rails that deliver current to it. These are actually the rails that give the gun its name; I don’t know anything about the historical WWII reference, it may be equally valid. The rails must be capable of delivering enormous amounts of current; upon firing, energy is “dumped” from low ESR capacitor banks, creating an expanding electromagnetic field between the bars. The current flowing through the projectile is oriented perpendicularly to the rails’ field, propelling it away. Due to the relatively high resistance of the contact between the projectile and the rails, arcing and welding tends to occur, making for a lot of difficulties. Coil guns are more feasible for an amateur, but still requires an awful lot of EE expertise and working with very dangerous currents. Coil guns actually don’t use a ferrous projectile; aluminum works just fine too. This is because the repulsion comes from the reverse electromagnetic field caused by an “eddy current”, a surface current that rotates around the surface of a conducting object. Check out this coil gun project & parent page for more info: http://www.powerlabs.org/gaussgun.htm

— Posted by jmb1125 on 2:28 am on Feb. 17, 2002

So this railgun is like a linear motor?
Sounds interesting, but these days with GPS guided munitions and “smart artillery” it has to be a long way off.

(Edited by jmb1125 at 12:04 pm on Feb. 17, 2002)

— Posted by DISTURBED on 9:39 am on Feb. 18, 2002

I believe NASA has already built the infamous railgun.
It has the power of say about 2 tons of C-4, and could wipe out a medium sized city without a problem. I read an article in a magazine that said it was field tesed in some desert. they didnt expect it to be so powerful and they accidentaly blew up some mountain and the projectile just kept going. And as for the power supply I believe it took its own nuclear generator.

Just an interresting fact they actually have magnets that can levitate a piece of plastic or anything for that matter.

— Posted by balor on 2:49 pm on Feb. 18, 2002

I never heard that it had been built.I personally dont see much truth in it to be honest.As an electrician who services and installs traffos and circuit breakers regularly I can say confidently that no equipment exists that could handle the power needed to fire the railgun effectively.The current just couldnt flow without melting everything around it and anyway the contact erosion on the circuit breaker contacts would be extremely rapid requiring replacement everyshot or so.

(Edited by balor at 2:51 pm on Feb. 18, 2002)

— Posted by DISTURBED on 5:16 am on Feb. 19, 2002


— Posted by Zambosan on 11:25 am on Feb. 19, 2002

You don’t need a continuous power supply for the gun, just an instantaneous one. This is generated by storing the energy in large low resistance caps. In theory (with zero leakage caps), you could charge the damn thing up with a charge pump and a freight car full of 9-volt batteries if you needed to. 🙂 The current is enormous, requiring the use of extremely large conductors capable of taking the thermal and mechanical stresses put on it by the current and the EM fields. Work has been done with high-temperature superconducting materials to increase the efficiency of the current transfer in linear particle accelerators, so I don’t see why this couldn’t be applied.

Hahaha.. 2 tons of C4, huh? Bet they had a field day commissioning a new geological survey to “erase” that “mountain” from all the maps. WOW, it’s own nuclear power supply!!! Neat-O!!! Wonder how they moved the cooling towers… And the projectile just kept on going, even after dissipating all that energy… hmm, sounds ripe for the picking by Energizer. Sure that projectile didn’t lodge into your brainstem? It might explain why you’re so… DISTURBED. 😮

— Posted by balor on 3:29 pm on Feb. 19, 2002

Well what I find unbelievable about the whole story is how the conductors can hold up.The capacitor bank that I constructed as mentioned above carried about 80 amps at 110Kv(8.8mw) and was wired in 95 sq mm copper.When I read about the German railgun that was supposed to have a 100,000mw capacity that got me wondering.Like there is a difference between the current in a spot welder and a railgun at its point of being energised.I dont know a lot of the cooling properties of heavy water or its derivitives.Just what advantages does it have over an oil filled unit complete with radiators for example.Would under fault conditions would the heavy water become conductive(assuming it had become contaminated)as would distilled ordinary water.Just how does it stay cool with the heat that would be generated.

— Posted by Zambosan on 4:06 pm on Feb. 19, 2002

The conductors hold up because of the extremely short duration of time that power is dissipated.  The lower the resistance of the conductors, the less they heat over a given time for a given current.  You can calculate the amount of heating that will be generated for a current surge of a given duration, and select a conductor accordingly.  A local university where I live does fusion research with high-energy lasers.  Their Omega laser dissipates 40,000J of energy in one billionth of a second.  That’s 40 trillion watts, an unbelievable amount of power… but a finite amount of energy.  The lasers are pulsed operation, and are fired with a jolt of energy dumped from a battery of capacitors as well.  The trick is to deliver the energy to the projectile (in the case of the rail gun) as quickly and efficiently as possible.  If you could use a superconductor, there would be a very minimal amount of heating since there is theoretically zero resistance.

— Posted by balor on 2:58 pm on Feb. 20, 2002

Suppose that answers my question Zambosan.

— Posted by Zackman on 8:35 am on Feb. 23, 2002

If you guys are trying to make a Railgun, or “Particle Accellerated Projectile Weapon”, as it’s less commonly known, then you may as well give up. There is no way you are going to get the nessecary parts for it. You just don’t have the money.

— Posted by Hergor on 8:40 am on Feb. 23, 2002

the parts are not the problem. circuit, power-supply and temperature are !

— Posted by balor on 2:19 pm on Feb. 23, 2002

If everybody just gave up all hope and curiosity when a few obstacles(granted these for a Railgun are massive) nothing would come to fruition in the future.Even if an individual could never manufacture a Railgun on his own I would feel happy anyway reading a report about one was completed and how it fired and how they solved the various problems that arose in discussion here.

— Posted by qube on 5:32 pm on Feb. 23, 2002

Quake 3 has one…..lol, joke i aint dumb.

Okay, why not all try making a mini version of the railgun……ull only need a fraction of power, and you can start from there, instead of making sum huge mother-fucker.
Also, im interesting in making a mini-one if possible…….so if any1 comes up wiv sum plans for a mini version then it would be pretty kool 2 show me. Only an idea those, coz i doubt (bad example) the Americans made Nukes before they had made a tiny bomblet, you have to start from the beginning to progress anywhere!

— Posted by Hergor on 4:45 am on Feb. 24, 2002

i think the problems stay the same if it’s a small or a huge one. so probably any working version would be ok.

qube, the problems still occur in the construction process, so once we got over them you may want to ask again… 😉

— Posted by qube on 8:24 am on Feb. 24, 2002

What you basically mean is the Railgun is possible, but the problems are hard to get around. Can you name all the problems in a list, just be interesting to see whats stopping everyone.
Ill ask again when sum1 manages to build a working version, then i can build a cheaper version.

— Posted by DISTURBED on 4:34 am on Mar. 2, 2002


— Posted by Hergor on 6:46 am on Mar. 2, 2002

ok, ok… anybody got a nuclear generator or at least some uranium or plutonium at hand?

…no? thought so.

this is stupid…

— Posted by Hergor on 8:59 am on Mar. 5, 2002

some dudes actually tried on such a project…
check out their site:

although their railgun isn’t complete yet and has never fired it provides me with a little hope that this project isn’t completely useless… 😉

they use 200 photocamera-flash capacitors for power source! 😮

— Posted by qube on 3:55 pm on Mar. 5, 2002

Hey that site is really good.
They mention a coilgun, how do you make a coilgun, its a simple railgun……

FUCK, just realised i sounded like a real newbie in that post, doh! Haha! Ah wel!

(Edited by qube at 3:57 pm on Mar. 5, 2002)

— Posted by Zambosan on 4:14 pm on Mar. 5, 2002

Yes, I *am* pretty slow… slow to believe fabrications, that is.

— Posted by Thanatos on 8:31 pm on Mar. 6, 2002

making a railgun is relativly, simple two conductive rails side by side a conductive ‘slug’ and (depending on the size) electricity it depends on the rail length and how fast you want the thing to shoot 330 v should make a good sniper rifle railgun and about 2 1/2 feet of rail

— Posted by Zambosan on 1:16 pm on Mar. 8, 2002

Plplpt sure.  I can pull nonsense numbers out of my ass too… if I did it at my job, I’d be unemployed pretty quickly.  “Eeny meeny miny moe engineering”.  Can you even define what “voltage” is without consulting a textbook?  If you even read through this topic completely you’d realize that the action of a rail gun has much more to do with the current than the voltage.

— Posted by Thanatos on 3:51 pm on Mar. 8, 2002

your right, but i ment the 330v as a suggestion for the size of the power supply for a small railgun and the whole idea of railguns or thier fabrication is much too complex to explain in a forum post (there are whole websites and they arent complete)

— Posted by Zambosan on 4:52 pm on Mar. 8, 2002

Please look up “voltage”. It does not imply “size” of a power supply in any way shape or form.

First post:
“…making a railgun is relativly, simple…”

Second post:
“…the whole idea of railguns or thier fabrication is much too complex to explain…”

…elapsed turnaround time, 0.8 seconds. :biggrin:

— Posted by qube on 7:23 pm on Mar. 8, 2002

Hehe, Zambosman you never fail to amuse me. And Voltage means fuck all without a current, for example a tazer might have 250,000 volts, but has little current so wont kill you but stun you pretty bad (something like that), my mate was saying this yesterday for some reason.
Also, Thanatos, if its so simple to make a railgun, why not make one and become a millionaire?

— Posted by eVipere on 2:06 am on Mar. 9, 2002

Ok, although I may not be able to help too damn much, a railgun, from what I heard, is like a VERY large solenoid.   If you can grasp the concept of that.. then you should be able to design a larger one that can shoot a nail or whatever a small distance…

and, for ya’ll’s concern.. BOTH voltage and amperes are required to perform any type of transduction.. (electrical > mechanical or vise versa)

I might be able to draw a basic schematic of what to build, but it may take me a bit of time….

— Posted by Hergor on 9:52 am on Mar. 12, 2002

a railgun fires projectiles. neither plasma nor electricity are ’emitted’. if one would use plasma, then it’d be as a source of power to accelerate the projectile inside the barrel (as plasma can carry electrical current). no current will ever leave the barrel. the process of acceleration is complete as the projectile exits the barrel.

i’ve never played mgs2 but remember, it’s a computer game. (i know you mentioned that but think about how reliable such a source is…)

why is the power of a battery measured by how ‘techy’ it is (quote: ‘kryptonite/plutonium metal inside’) ? at the moment the question of power (usefulness) is only a matter of size i think…

— Posted by Zambosan on 10:02 am on Mar. 12, 2002

The greatest improvements in batteries are those that increase the energy density (J/kg), allowing you to get more energy from the same size battery.  And no rail gun is going to be powered by any portable battery.  eVipere, you’re describing a coil gun, which is a similar principle, but produces an acceleration by inducing an eddy current in the projectile with an impinging electromagnetic field, whereas the rail gun actually drives high currents through the projectile, requiring a reliable, moving contact without welding the damn thing.

— Posted by qube on 5:57 pm on Mar. 13, 2002

How do we make a coilgun to shoot small projectiles fast and painfully well. Take over the World!! (or not)

— Posted by Cypher on 1:02 am on Mar. 14, 2002

Quote: from The Great Milenko on 2:08 am on Dec. 9, 2001
Phuck!! railguns!! shit i thought they were purely fiction…..thats whack…..so is it like a laser gun sorta things or sum shit?

Oh i have no respect for you now

I would have though with all your ‘knowledge’ u would know! 🙂

— Posted by balor on 2:59 pm on Mar. 14, 2002

Justa question for Zambosan or Hergor.Today I was closing an overhead fuse on an overhead 10kv. line and the second fuse I placed in blew as I hadnt taken down earths down the line so it formed a short circuit across the two conductors.When the fuse blew it obviously disintegrated into a cloud of hot vapourised metal(Silver).It reminded me of something I heard before of the exploding wire,where the wire blowing because of short circuit formed the basis for a projectile or plasma weapon.I cant remember was the vapourised metal used as a projectile as such or was the action of the exploding wire used to propel a projectile.Cause the fuse that blew today is like a shotgun going off and it peppers the ground beneath the fuse with hot bits of metal.Any info on the exploding wire would be welcome and its current prospects on its use now compared to a typical railgun that can be produced today.

— Posted by Zambosan on 4:15 pm on Mar. 14, 2002

The exploding wire is a neat experiment, where a capacitor bank dumps energy into a wire way too small to handle the current pulse.  After initial resistive heating, the wire “boils” into plasma, creating a sudden drop in resistance that produces a voltage drop and a sudden surge of current; the wire vaporizes.  I’ve never heard of applications as a weapons.

Those big Buss fuses really make one hell of a bang, don’t they? 🙂

— Posted by xoarj on 5:27 am on Mar. 16, 2002

Damn…this topoic is still going, hope you guys come up with something good, make cool little weapon http://scitoys.com/scitoys/scitoys/magnets/gauss.html
this site has mini home experiment that furks around with magnets to make a mini gaus rifle, on a larger scale though it could be alot of fun

— Posted by eVipere on 6:39 pm on Mar. 20, 2002

hmm.. vaporization of copper/silver/gold   (depending on the conductance needed) might not be a bad idea at all…..

— Posted by nasor on 10:41 pm on Mar. 20, 2002

Many people here seem to be confused about how a rail gun works.

Strictly speaking, a rail gun uses two conducting rails with a conducting projectile laid across them to act as a switch. Electric current is sent up one rail, through the projectile, and back down the other rail. The flow of current produces magnetic fields that propels the projectile forward.

Anyone willing to invest some effort can build a rudimentary rail gun from two copper or aluminum bars, a high voltage power supply, a capacitor bank, and a few structural bits. It will probably be pretty unimpressive (you won’t blow up any buildings with it) but you can make the projectile shoot down the rails.

There’s nothing especially difficult or mysterious about railguns and the principles behind them are well understood. The main reason we don’t have railguns like in quake is that it takes a LOT of current to move the projectile. Most hobbyists and researchers on a budget who want to build a rail gun use capacitors to produce the pulses. There are better sources available, but most of them are out of the reach of the average experimenter. The reason we don’t have weaponized rail guns is that no soldier wants to go into battle with a huge 300 pound capacitor bank attached to his gun.

Note that this is entirely different from a coil gun,  which  uses a solenoid or series or solenoids to fling a projectile.

— Posted by GhEtTo BoY on 4:09 am on Mar. 21, 2002

ok well heres my two cents
think of it like this

                ||     ||
                ||     ||
                ||     ||
                ||     ||
                ||     ||
                ||     ||
                ||     ||                   ||     ||            the opposite side is the negative
                || ()  ||
               this is the barrel of the
              gun containing the projectile

think of it like this. the two side dont repel each other yet
but wen u power them up starting from the bottom and ending at the top the magnets on each side squeez out the projectile
              it kind of uses the same theory as the bullet train
btw wasnt a rail gun used in metal gear solid   if u played the game u shuld get a basic idea of it

— Posted by EMP on 8:01 pm on Mar. 23, 2002

i have created a small electro magnet cannon it cant realy be called a rail gun as it has no rails i made it by making a pair of electro magnets which suspended a paper clip and then i had a third more power full electro magnet which i put as close to the paper clip as possible and then turned on it had about 200 coils on and i ran 12v’s through the wire and the paper clip fired into my wardrobe even though it fired the wrong way and almost put a hole in my hand but the only reason it fired and didnt stick to the power full magnet was because it shorted and i droped the power ful magnet and i now have a paper clip in my wardrobe cause i hant taken it out its only about 0.5 cm in but it worked (now to make it fire the other way if any one knows how please tell me as i’ll be shooting things i bet it will beat the trusty pea shooter)

— Posted by Hergor on 5:17 am on Mar. 24, 2002

hey EMP, yours is a coil-gun. those are easy although they need a huge power-supply to work well, too.

— Posted by EMP on 10:14 am on Mar. 24, 2002

coil gun, rail gun if it can shoot through things or shoot long distance im happy now all i need is one of those crappy gat guns n ill turn that into a coil gun but i need to keep small so cops wont find it

— Posted by Hergor on 11:08 am on Mar. 24, 2002

well, keeping it small is just the problem. you’ll need a large battery-pack to achieve a certain force with any electro-magnetic or electric ‘projectile accelerator’, while railguns have a better performance and are easier to make than coil-guns if somebody found a way to by-pass the given troubles.

shooting over vast distances while using only a little source of energy is yet impossible. and so is penetrating things.

basically it’s like this:

  • long range = large battery
  • high velocity = large battery
    (and the other way around)

    — Posted by EMP on 11:16 am on Mar. 24, 2002

    tesla coils increase the out put some how so couldnt that be used to increase the voltage of the power put into the coil gun i know it would go from the size of a small shoe box to the size of a massive cargo lorry but id probably kill my self with a tesla coil so i dont think its a very good idea but it would if there was some way of getting the electricity to go where i want it

    — Posted by Hergor on 12:00 pm on Mar. 24, 2002

    due to the law of constant energy you cannot increase the ‘output’.
    the ‘output’ consists of two factors: voltage and current.

    transformators are made of two coils wherein the one induces a current into the other. the relation is like this:

  • high current/low voltage low current/high voltage

    for a railgun or coil-gun you need a high current, not the voltage. (your transformation from current to voltage would do the opposite than what is necessary for such a device)
    either way you’d need a huge battery because it doesn’t matter if it’s current or voltage but these need to be stored somewhere…

    also a transformator still looses a certain ammount of the power from the ‘input’-side when it induces a current due to a give-off of heat and the resistance in the wire.

    — Posted by Zambosan on 11:42 am on Mar. 25, 2002

    Yep… a Tesla coil is just a transformer with an extremely high turn ratio to step the voltage on the secondary “winding” to a voltage high enough to ionize air & produce arcing.  But it can’t create energy. 🙂

    — Posted by EMP on 9:35 pm on Mar. 26, 2002

    yeah and knowing our luck it would get put in iraq or afganistan or some place like that

    — Posted by xenonalieninfo on 7:27 pm on April 2, 2002

    a  tesla coil is stactic elctrical
    try re wording it

    — Posted by Orion85 on 11:17 pm on April 2, 2002

    I have seen on channel TLC electronicly fired guns that can shoot over 1 million rounds/per sec. this technology has been around for a while and gets the job done pretty well. It works by having all the bullets lined up, one behind the other, in many rows, and the gunpowder is activated by electricity. faster than a pin hittin the bullet. a great idea, and its nice to see something different, but what I believe would be better would be a gun that doesn’t use gunpowder or explosives. Thats been around for such a long time.
    Railgun, I don’t believe that there is a demand for it because the only advantage of it is that it can potentially shoot through stuff bullets can’t. And it’s expensive. Not worth the money, but a genius idea that i believe came from the movie “Eraser”.
    Also another crazy idea my be fireing radioactive stuff at people-i heard a spec of plutonium, the size that you can’t even see with the naked eye can kill a human.
    Railgun’s may be around(who knows whats in Nevada?), remember those basic principles of phisics when talking about guns that fire super heavy pieces of metal. If you think you got an idea, just think a genius captured by the CIA probably thought that up years ago.

    — Posted by Zambosan on 12:01 pm on April 3, 2002

    Trust me, the concept of a railgun was around LONG before Eraser. :biggrin:
    I read about those multiple-round guns in a SOF article about 4-5 years ago… neat idea.  The Navy was considering mounting some of the large “brick” style ones on destroyers; the sheer number of projectiles hitting in rapid succession makes it pretty capable of penetrating thick hulls, etc.  The reloading time and maintenance makes it a pretty expensive weapon in several aspects, however.  They also had a hand-fired, three-barrel model.

  • Leave a Comment

    Scroll to top