Awesome Ending song... Can I request that you buy a ham, or go to a butcher and get a pig slab and do a penetration test?
Mainly just because I'm curious,... You said this was non lethal, but I don't think so, a well aimed shot I think has more than enough power to penetrate the neck, lungs, heart, temple, etc etc.
@stwjester You did not click on the show more link below the video did you? If you had you would have seen the FAQ in which the OP said he would not waste a good piece of meat. it would only be lethal to a few points on the body and even then you would have to be close enough they could hit you with a fist or kick you.
@AsSaSsInSGrEeD09 Cool thing is it is completely legal as there is no law anywhere on the books regarding one. Atleast not till some idiot holds up a bank with one.
@spiloFTW Spheres as a projectile are poor in the case of a coilgun. it goes back to magnetic coupling. You want as much surface of the projectile exposed to the magnetic field as possible. With a sphere there is only a narrow band around the hemisphere that accomplishes this.
right heres a question the capicator that is bridged across the transfomer does that have to be a spesific value critical to the oscilation of switching the transistors on and off and is it work out with the inductance of the transformer it would be great if you could help here as im trying so simulate it
@masretals Google the ZVS flyback driver, There you will find your information, There is a range it can be but the important thing is it must be extremely high quality. It is normally .68uF at 250 volts. This works in nearly every case.
lithium polymer batteries - have you looked at these? you can get batteries that will deliver up to 400amps... and last longer/more compact/cheaper than the Ni-MH's. perhaps if you can build a suitable charging circuit you can reduce the time needed to charge the caps to nearly nothing. would this work?
@TimTamsLOL LiPo batteries are too dangerous.If the get punctured or damaged in the slightest they burst into flames. if you want the current of LiPo but remains safe and even biodegradable then use Lithium Iron Phosphate. They actually have higher voltage and current density per cell count then LiPo do and they wont explode if their guts are exposed to air.
@PayWithGore I am guessing you have not done much research on the subject of coilguns. Most use a minimum storage voltage of 300+ volts. The audio caps you refer to maybe store 16 at most. Thay also discharge to slow. You need caps rated in the range of microfarads, not farads. Look at the specs on his gun. 400 volts and 4 x 3900 microfarad in parallel for a total of 400 volts and 975 microfarads. Those are the typical numbers you are looking for.
as for a projectile, you could try make it a dart, which would eliminate problem with rotation of the bullet. Second of all this could make the projectile lighter there fore increasing it's speed. (please correct me if i'm wrong :) )
@johnym89 The issue with making a dart is you remove metal from the projectile and that reduces magnetic coupling. So you in fact reduce the acceleration due to less coupling. Coilguns are like a double edged sword. Every improvement at one point becomes a deficiency at another.
Mine is not the one in the video. I will have a video of mine soon, I ma just trying to bring the charge time down to a better time. I use small 12 volt lead acid batteries for mine. The kind you find in an alarm system for power backup.The propblem you will find if you use the ZVS flyback driver as in this design is that you need a power source for the charger that can supply 10+ amps. A car battery would work, but would kill portability. You could also use a motorcycle battery.
@ShitCrap To be honest except for the electrical hazard which is only present when disassemble, this gun is safer than any conventional firearm for the user. Since it does not use powder, it will never explode in your face like a real gun could.
Very clever. I'm just gonna take the lazy way and wrap some copper wire around some PVC piping and hook it up to some 9 volt batteries. Much less sophisticated, but it should launch some sowing needles pretty well
@thewisdomsinthetrees 9 volt batteries won't supply the current you need to even launch a sewing needle. To generate a field strong enough to launch a needle even ten feet you would still need a few hundred amps going through your coil. Only way to achieve this is storage caps. You can still take the cheap almost free way buy asking those photolabs at drug stores for their used disposable cams. They contain a cap that is perfect for the job. About 8 should do the trick.
@thewisdomsinthetrees Yes I mean capacitors. Look at the construction of any coilgun and you will a charger circuit that charges a bank of capacitors. The charge on those are then dumped through a coil by some sort of switch that can handle high currents. Regular switches will only weld or disintegrate the first time they are used. On a modest CG such as this one there is 4500 amps being dumped. In one second that equals 1.5 megawatts or one second of power for a small city
@Solarenemy1 what kind of battery do you recommend? should i find a car battery? i'm not trying to make it look neat and sleek like yours, i'm just tinkering with it for my own amusement
I sell you mine for 3000 USD. That about covers the parts, labor and blood I have put into it. Just for the record you won't find one for sell for much less. CG builders usually put too much time and effort into their guns to just sell them at cost.
2. Large filter capacitors don't explode. If you overvolt or negatively charge them over ~100 volts, they will boil inside and puff steam. No explosion, search YouTube and see for yourself.
Large caps like these have safety vents that rupture when over heated. All they do is spray steam and hot electrolyte. Unless you had your hand or other body part almost on top of the cap the venting is harmless although it does ruin the cap.
As for a spin. the velocity is too low for a spin. Trying to impart a spin at this velocity would only reduce the velocity further from the friction of the rifling.
@maxzmo13 Unfortunately as an object approaches light speed it's mass becomes infinite and therefore cannot be propelled in a convention kinetic way meaning keeping it at it's current state of matter. The only way to travel at light speed or faster is to convert matter to energy just like light. This will not happen using magnetic propulsion.
@Liamfrombury So your saying the laser sight this gun uses is not firing at the speed of light? Last time I checked the output of a laser was light(photons) and therefore the particles of that energy must be traveling at well the speed of light. So you saying nothing but neutrinos can travel at such a speed is a false statement in this case. There are many particles that can travel at or near light speed. But again they are energy and that is the key. Matter must convert to energy.
Usually the firing coil is designed around the desired projectile then the gun follows. A smaller projectile would not work unless the gun was redesigned around that ammo. As for killing, even the OP said this gun won't kill but it can cause a serious injury and if you are stupid enough to make a circuit across the caps and that circuit crosses your heart you are dead. No second chances. The cap mount is sturdy if you go over his notes and build drawings and pics. I would paint them black.
this works on magnetism right? would supercooling help somewhere in the process? I've seen some interesting things happen with just plain metal and liquid nitrozen..
its cool but unless it can be re enginered so its light and will still fire the same or fast speed than a bullet i doubt these will become used by military... which would be cool
@jospence115 At point blank it could crack a rib or go through thin skin. It has no range but does pack a punch. A 30g round at 38 m/s is not something to take lightly. That is 9 joules of energy. It only takes 5 to break ribs and fingers.
Also I'm not sure if my entire posts are showing up as I am using an iPhone and it doesnt show my entire post after it is completed.....stupid mobile app!
The firearm part is irrelevant. Im not accusing anyone of anything. I can use "SWIM" if OP deems necessary...I still think that round is too heavy. I am VERY familiar with firearms and bullet tumble etc. The length alone would make tumbling highly unlikely. (.22Hornet vs .22 WMR). Now as said I am not fam. with the electro-aspect and I consider your reasoning, but I am not suggesting to drill it so large that it is essentially hollow. There is def. a fine line. If that round stock "bolt" is app
You build them, they are never for sell due to the work involved. As for hunting, forget it. This is one of if not the best portable on youtube and it does not have a lethal velocity. It is much easier to penetrate a hard material like steel and plastic then it is to penetrate flesh and muscle. The builder of this one has already confirmed as mentioned in hos notes that this gun IS NOT lethal.
I'm not familiar with how this would effect the electromagnetic aspect of the velocity in the firearm but I think you need smaller/thinner ammunition, or you need to drill down the center of the back of the round to reduce the weight and get greater muzzle velocity. Of course there is a fine balance between optimal Light/heavy weight effecting the momentum of the round which you will have to experiment with, as a few hundred years of firearms design has shown. Too light and you may have issues
@WickeDxRebeLx It's electromagnetic, so it is not a firearm. otherwise it would be illegal and CG's are not illegal yet. If the round is too small you will get magnetic saturation and loose energy to the projectile. If it is too light then you will reduce the kinetic energy delivered to the target. A lighter round will also tumble easier. To be honest everything about this CG is done right. Make your own and you will see how things behave outside the norm.
You know I think the hardest part of building one of these is winding the damn flyback transformers secondary. I would rather go to a dentist sometimes. Maybe somebody should start a business winding custom transformers if they have no life and want to make some cash.
@HUwalling Your not going to get one then. Mainly because of the time and labor and cost of parts your not going to pay what most builders will ask for their sweat and blood. Mine would set you back 3000 USD.
@Solarenemy1 ok well i just didnt know cause right now i dont have time for anything not that i just didnt want to do it and i could not get mine to look that good.
Excellent video. I'll definitely be reviewing it more when I have money to spare for my own DIY Coilgun. Liked/Favorited.
Although, I thought it was pretty funny watching those projectiles demolish household items and be stopped by what appeared to only be a couple sheets of cardboard. Pretty sure you had a metal plate or something back there, just funny to watch.
@Solarenemy1 Most of the energy was used up smashing the object in front of the cardboard I think. Then there was a plywood board right behind the cardboard, and finally a foam board behind all that protecting the fence. The bullet never got past the wood.
@mikado387 As you saw in the video you pull back the bolt, drop in a round and push the bolt forward. Total load time about 7 seconds. Now what you did not ask correctly is what is the charge time since it too dictates how often the gun can be fired. That is 30 seconds. So you are looking at about 37 seconds between shots.
As seen in the video the range is only going to be about fifty feet tops at the current velocity.
@mikado387 It is just a ZVS flkyback driver. You can find diagrams and schematics all over the web. You just need to add the SCR for triggering and maybe some sort of control circuit. But if you read below the video it says he will not give out the schematic as it is available everywhere.
All depends on the mass of the projectile. Newtons laws hold true even in the electromagnetic propulsion world as well. On my gun that fires about the same size round it has the recoil of a high power pellet rifle. If you fire the unit with out holding it in place it will move about an inch backwards from the recoil.
Wow why do the last two questions/comments give me a sense of Deja' Vu? Oh that's right they have both been used already. Sorry you both get B's for originality.
@aleronstube Did you not notice the four blue cylinders in the stock? Those are the storage caps. A CG must use caps in the storage section. This creates the enormous current (4200 amps+) that no portable battery is capable of to cause the magnetic field that propels the projectile. All the battery is doing is supplying 12 volts to run the charger, meter, and SCR gate voltage.
@Solarenemy1 Thanks for the info. I don’t understand why nobody is actively researching battery technology. Cell phones, laptops, electric cars, solar power, literally every portable electronic, they are ALL held back by the limitations of lithium batteries. We need something better, period. It annoys me so much when phone companies come out with a brand new model, while the battery life goes down because they can't drag enough power out of an obsolete lithium system to power it.
So, theoretically if I used a smaller projectile(tiny nails or darts) I could possibly get an increased muzzle velocity at a cost of less terminal energy. I really want one rigged with a hopper, so I don't have to place the round in each time. I saw it takes 30 seconds to charge, but it would save a second or 2 between shots
It takes 30 seconds to charge between each shot. There is no way around this. The gun I just finished takes 5 minutes to charge between shots (much higher capacitance). They only way to speed it up would be to hook it directly to AC mains but then it would not be portable. Thus due to 30seconds between each shot there is no need for a magazine plus loading one round each time gives you something to do during charging.
@halopartyboy Your ammo you are looking for is WWII flechettes. I have a pound of them and am also designing a CG pistol just to fire them. However you must consider your ammo as part of the design as it dictates the inner diameter of your coil. Once made you can not change ammo as it will be too small or too big for your inner diameter and barrel.
I know hardly anything about electrics except wiring my guitar but would using a thinner gauge wire on the firing coil help or make things more inefficient?
@Bluesbreaker2010 Actually the opposite is true. The bigger the wire the less resistance there is to current. Resistance is the evil of all CG's resistance converts current to heat and thus your loss of efficiency.
Dude, if you got a license to make and sell these you'd be a very wealthy man. Now all you need to do is modify it to fire 12 gauge taser rounds, therefore making it a nonlethal weapon.
@KaptainSparta it is non lethal now. At best it might stun a target for a few seconds. Long enough to get in an do damage with another weapon or fist.
@KaptainSparta You don't need a license to make, sell, or own one of these. They are not classified as a weapon YET... So make or get one while you can before somebody kills somebody with a much stronger version and they then get classified as a weapon.
what is the firing time of the coil? you may be getting "magnetic drag" if the coil is still active as the projectile is passing though it. try shortening the timing and see if your muzzle velocity improves.
@jimbob42able As stated in the notes the firing time is 4ms which is about right for a coil of this length. If the time is reduced any more his current would exceed the SCR's capability and fry it. At his voltage and capacitance 1ms is the difference of nearly 1000 amps. He would also have to completely redo his coil and barrel assembly to achieve a shorter time.
@jimbob42able I'm sorry that was actually 2.6ms. That is already pushing 4Ka. drop another ms and we would be seeing 5+Ka. That would exceed this SCR's pulse rating.
@ERRORcode901 Why would they care about it? As you see it has about a fifty foot range and no accuracy. It is a good model for what it does. But it will never come close to the power of and M4 or similar rifle. To reach that speed and power it would be impossible to make it portable with current tech. Coilgun technology has already been researched to death by the military and thrown out as not being usable tech at this time. Until room temp super conductors, this is the best.
@Solarenemy1 I'm aware of that, I meant that it could possibly be adjusted, or even redesigned before being mass-produced for those purposes. Even then, its just a thought.
@Kreaden This has been brought up an answered in previous post. It would require a compete redesign of his current breech. Plus the fact he only has a few rounds to fire the effort of redesign for this model would not be worth it. As you see he fires then retrieves the round rather then firing another. That indicates a low total round count.
There is also the cool factor in respect that most renowned sniper rifles are single shot bolt action like this.
I have 2 big 450 Volt capacitors, but they have 4 leads. If anyone can tell me why it would be appreciated because I would like to use them for a coil gun of my own. And also I would like to know if making multiple coils on top of each other going in the same direction would work fine because I have a lot of wire, but the wires themselves aren't very long and it is difficult to make a thick coil without coiling backwards a little which I know is bad.
@Someone7089 Voltage is not the only rating a cap has. What is the uF or MF rating? if it has four leads then there are most likely two caps in each which will be too low of a capacitance. Coils must be would with continuous wire and all the turns must be wound in the same direction and laid evenly. You also don't just wind a coil. You must figure out what your desired inductance should be based on your acceleration time, voltage, and capacitance. Those values dictate coil dimension
@Solarenemy1 The capacitance is 470uF. The circuit I unsoldered the capacitors from didn't have a connection to 2 of the leads, only the other 2. So in this case I would want a capacitor with the largest capacitance and voltage possible? I know voltage is important, but I wasn't so sure if capacitance made as much of a difference. I'm also going to see if I can calculate the proper coil dimensions.
@Someone7089 If that is the case then the other two terminal where just for structural support. I would not do more that 500 volts for a portable system. As for capacitance you don't want the most as that will require much higher current to bring it down to zero in time. I would not go over 2500uf total just to keep current manageable. My almost finished rifle is pushing 450 v at 240000uF at a current of 5000 amps during discharge. My SCR is massive and may still fail.
I find this really interesting, I read in a short discussion that for a railgun (I know, they're different) speed is increased when the object is already in motion and I didn't think much of it til now but if a coil gun and something that already provided acceleration of the object were adapted to fit together could the velocity be increased?
@870WM34W4Y That would be the purpose of the multi-coil guns that you see. Each coil the projectile passes through adds to it's already existing speed so it acts as a cascading effect on increasing the speed times the number of coils.
@Larsplatoon wait I'm confused dont be looking at me as a retard when i ask you this question but it still has to take ammunition? and if so it only fires one bullet? if i may add a good job and all but to be honest i thought you basically made an electric gun lol that shoots lighting. you need to figure out how to make a magazine cart. as said before good job
@MegaRyking Thanks! Unfortunately, physics do not allow for a gun to shoot lightning. If you want to see that, you'll have to look at sci fi. Yes it fires one round at a time. No need for a magazine when it takes 30 seconds to recharge between shots.
Uhm, just out of pure curiosity, if you were to make a piece of metal that fits into your CG-33 super-conductive, I.E. dip it in liquid Nitrogen for example, what would the muzzle velocity increase to?
@FoxvoxDK It would only make the round more brittle. The coil and all its interconnects to the SCR and caps is what would need to be super cooled. That way you could go way beyond their room temp current limits without damaging them. Of course then you run more of a risk to your own safety.
@Solarenemy1 I see, I've always been wondering why the energy efficiency is so ridiculously low on these things. How does one go about transferring more energy to the projectile in this configuration? Reason why I suggested the super-cooled metal or magnet was that, I thought the amps was what kinda made the projectile melt or come apart. Like the big Railgun the Navy has been building, not saying that these designs are are anywhere near the same though :P.
@FoxvoxDK You are confusing a coilgun and railgun. A coilguun does not vaporize part of the projectile during firing. In fact the only place heat goes is to your SCR and Coild due to internal resistance. It is this resistance that is the killer for coilguns. Super cooling these components would allow you to raise the current much higher which will give a stronger magnetic field in the coil. A coilgun simply pulls the projectile into the coil half way then relies on it's own momentum.
@FoxvoxDK The idea is to kick the projectile as hard as possible with the magnetic field from the coil. Because once it leaves the coil it is all up to kinetic energy and gravity. If you notice in the video there is no smoke or flash of any kind during firing. That is becuase in a CG the projectile is the same when fired as it was when loaded. Think of it as nothing more then a magnetic field propelled spear gun.
@Solarenemy1 Thank you! That clears it up for me in a very understandable manner! I've never toyed with these things and always been curious about them so, thank you!
@Asianaeatkittens The important parts are all listed in the video, if you look at the white text at the bottom. The rest is up to personal preference.
@yo90bosses As it is, it has less muzzle velocity than a BB gun. To get to a lethal velocity would require a cap bank that would be impossibly large and heavy for a person to carry. As this gun is now at best it will give you a good bruise. Maybe at point blank in an eye it might be lethal. Without room temp super conductors you will never see a portable coilgun on the same par as a conventional gun.
i just have to say this: amazing, absolutly astonoshing how youve made this. now i like to beleive i know a thing or two about electronics like this but it just occured to me that i know next to nothing. i hope you will be able to make things as awesome as this in the future.
@JOHNNYCOMEKILLU Thanks! Actually when I started this I was a beginner myself, coilguns are actually pretty simple and are a great way to begin and learn.
@Larsplatoon i hope so, i hope to make one, i just need the tools and the know-how first :) i cannot seem to find a straight forward video anywhre on youtube of how to make this, i guess i'll have to look elsewhere, anyway that is even more encredible, the fact that you where a beginner when you did this, awesome :)
@dingo27mobile Caps work similar to batteries. When in series the voltage they can handle is the value of the lowest cap times the number you are using. In parallel the voltage is the going to be the same as the lowest rated cap no matter how many are in parallel.
Note however that when in series you add up all the capacitance and divide by the number of caps to get your total capacitance. In series you simply add the total capacitance together to get you total.
@Solarenemy1 thanks, i'm not so good in electronics but i know this. But i think 2 same serial caps would get same energy, but shorter pulse and lover amps, as 2 parallel. I assume that from playing with little cgs, where too big caps with small vooltage were pulling projectile back and forth (resonating), and same caps rewired for higher voltage (but less capacitance) did not do that. But that only works for SCR, you can switch off mosfet or igbt at the right time of course :)
@dingo27mobile I am guessing that you have just made a coil with no real thought in it. The coil and caps from what is called an LC circuit. The coil must be tunes to cause the caps to discharge in the desired time. You can use massive capacitance and tune your coil to still achieve a short discharge. However the current will be extremely high such as the case in my gun I am working on. Your coil is the critical part and tuning it will achieve any desired discharge time you want.
@dingo27mobile Tell me what your desired voltage and capacitance is and what size wire you have to make the coil and I will tell you what it's dimensions should be to achieve a 4ms discharge time and what that current draw will be.
Awesome Ending song... Can I request that you buy a ham, or go to a butcher and get a pig slab and do a penetration test?
Mainly just because I'm curious,... You said this was non lethal, but I don't think so, a well aimed shot I think has more than enough power to penetrate the neck, lungs, heart, temple, etc etc.
stwjester 9 hours ago
@stwjester You did not click on the show more link below the video did you? If you had you would have seen the FAQ in which the OP said he would not waste a good piece of meat. it would only be lethal to a few points on the body and even then you would have to be close enough they could hit you with a fist or kick you.
Solarenemy1 1 hour ago
If you want to simulate it, just search on youtube for the following and checkout his vid. he also has data on the simulation in his notes.
ZVS (Zero Voltage Switching) Flyback Driver - Simulation
Note this is only the charging circuit.
I don't know the inductance since I just wound mine based on other models out there.
Solarenemy1 1 day ago
Looks like that thing could murder a tank, there's not many places you could take that thing without getting your ass busted. LOL.
AsSaSsInSGrEeD09 1 day ago
@AsSaSsInSGrEeD09 Cool thing is it is completely legal as there is no law anywhere on the books regarding one. Atleast not till some idiot holds up a bank with one.
Solarenemy1 1 day ago
i think your bullet is too big, try a simple ball fro ma bearing that fits the barel
spiloFTW 2 days ago
@spiloFTW Spheres as a projectile are poor in the case of a coilgun. it goes back to magnetic coupling. You want as much surface of the projectile exposed to the magnetic field as possible. With a sphere there is only a narrow band around the hemisphere that accomplishes this.
Solarenemy1 2 days ago
right heres a question the capicator that is bridged across the transfomer does that have to be a spesific value critical to the oscilation of switching the transistors on and off and is it work out with the inductance of the transformer it would be great if you could help here as im trying so simulate it
masretals 2 days ago
@masretals Google the ZVS flyback driver, There you will find your information, There is a range it can be but the important thing is it must be extremely high quality. It is normally .68uF at 250 volts. This works in nearly every case.
Solarenemy1 2 days ago
@Solarenemy1 whats the inductance across the input of the transformer then so i can simulate this bad boy
masretals 1 day ago
lithium polymer batteries - have you looked at these? you can get batteries that will deliver up to 400amps... and last longer/more compact/cheaper than the Ni-MH's. perhaps if you can build a suitable charging circuit you can reduce the time needed to charge the caps to nearly nothing. would this work?
TimTamsLOL 2 days ago
@TimTamsLOL LiPo batteries are too dangerous.If the get punctured or damaged in the slightest they burst into flames. if you want the current of LiPo but remains safe and even biodegradable then use Lithium Iron Phosphate. They actually have higher voltage and current density per cell count then LiPo do and they wont explode if their guts are exposed to air.
Solarenemy1 2 days ago
What about 1F - 3F Capazitors for car hifi, woult it work?
The nice thing is that some have already got a digital view about the charge:)
PayWithGore 2 days ago
but i dont know a about the V at those products
PayWithGore 2 days ago
@PayWithGore I am guessing you have not done much research on the subject of coilguns. Most use a minimum storage voltage of 300+ volts. The audio caps you refer to maybe store 16 at most. Thay also discharge to slow. You need caps rated in the range of microfarads, not farads. Look at the specs on his gun. 400 volts and 4 x 3900 microfarad in parallel for a total of 400 volts and 975 microfarads. Those are the typical numbers you are looking for.
Solarenemy1 2 days ago
@Solarenemy1 Yeah indeed, thanks for your answer
PayWithGore 2 days ago
as for a projectile, you could try make it a dart, which would eliminate problem with rotation of the bullet. Second of all this could make the projectile lighter there fore increasing it's speed. (please correct me if i'm wrong :) )
johnym89 3 days ago
@johnym89 The issue with making a dart is you remove metal from the projectile and that reduces magnetic coupling. So you in fact reduce the acceleration due to less coupling. Coilguns are like a double edged sword. Every improvement at one point becomes a deficiency at another.
Solarenemy1 3 days ago
Mine is not the one in the video. I will have a video of mine soon, I ma just trying to bring the charge time down to a better time. I use small 12 volt lead acid batteries for mine. The kind you find in an alarm system for power backup.The propblem you will find if you use the ZVS flyback driver as in this design is that you need a power source for the charger that can supply 10+ amps. A car battery would work, but would kill portability. You could also use a motorcycle battery.
Solarenemy1 3 days ago
if that gun malfunction you propably got yourself killed, brilliant
ShitCrap 4 days ago
@ShitCrap To be honest except for the electrical hazard which is only present when disassemble, this gun is safer than any conventional firearm for the user. Since it does not use powder, it will never explode in your face like a real gun could.
Solarenemy1 4 days ago
3:39 military simulation
climid 4 days ago
Very clever. I'm just gonna take the lazy way and wrap some copper wire around some PVC piping and hook it up to some 9 volt batteries. Much less sophisticated, but it should launch some sowing needles pretty well
thewisdomsinthetrees 4 days ago
@thewisdomsinthetrees 9 volt batteries won't supply the current you need to even launch a sewing needle. To generate a field strong enough to launch a needle even ten feet you would still need a few hundred amps going through your coil. Only way to achieve this is storage caps. You can still take the cheap almost free way buy asking those photolabs at drug stores for their used disposable cams. They contain a cap that is perfect for the job. About 8 should do the trick.
Solarenemy1 4 days ago
@Solarenemy1 you were right. i wasted 15 minutes giving it a shot. what do you mean by storage caps? do you mean capacitors?
thewisdomsinthetrees 3 days ago
@thewisdomsinthetrees Yes I mean capacitors. Look at the construction of any coilgun and you will a charger circuit that charges a bank of capacitors. The charge on those are then dumped through a coil by some sort of switch that can handle high currents. Regular switches will only weld or disintegrate the first time they are used. On a modest CG such as this one there is 4500 amps being dumped. In one second that equals 1.5 megawatts or one second of power for a small city
Solarenemy1 3 days ago
@Solarenemy1 what kind of battery do you recommend? should i find a car battery? i'm not trying to make it look neat and sleek like yours, i'm just tinkering with it for my own amusement
thewisdomsinthetrees 3 days ago
I sell you mine for 3000 USD. That about covers the parts, labor and blood I have put into it. Just for the record you won't find one for sell for much less. CG builders usually put too much time and effort into their guns to just sell them at cost.
Solarenemy1 5 days ago
Could I buy one
Bigpoppa1211 5 days ago
1.) The projectile should rotate (you have to solve this), otherwise it flyies where-ever air wants.
2.) It would be better to make stronger cover on caps. The caps can explode if it is overheated or just tired after long usage.
3.) Nice work, keep working...
TomStoneMemphis 1 week ago
@TomStoneMemphis
1. I agree
2. Large filter capacitors don't explode. If you overvolt or negatively charge them over ~100 volts, they will boil inside and puff steam. No explosion, search YouTube and see for yourself.
3. Thanks! I am... working very hard.
Larsplatoon 1 week ago
@Larsplatoon
Large caps like these have safety vents that rupture when over heated. All they do is spray steam and hot electrolyte. Unless you had your hand or other body part almost on top of the cap the venting is harmless although it does ruin the cap.
As for a spin. the velocity is too low for a spin. Trying to impart a spin at this velocity would only reduce the velocity further from the friction of the rifling.
Solarenemy1 1 week ago
@Larsplatoon
1) You need a RIFLED BARREL.
3) Very cool. Build em and sell em on Ebay till the government passes new laws to stop you!
bigtruckseriesreview 4 days ago
Silent kill weapon?
fishdude333 1 week ago
@fishdude333 Part of the reason guns are so loud is because the bullets are going faster than the speed of sound.
If you got a coil gun to fire a projectile as fast as a regular fire arm, it would still be pretty loud.
JohnnyRadman 4 days ago
THUNDERGUN.
fishdude333 1 week ago
If the coil was about 1 km long, had Capacitors the size of houses and a nuclear reactor, this thing could shoot something at the speed of light!
maxzmo13 1 week ago
@maxzmo13 Unfortunately as an object approaches light speed it's mass becomes infinite and therefore cannot be propelled in a convention kinetic way meaning keeping it at it's current state of matter. The only way to travel at light speed or faster is to convert matter to energy just like light. This will not happen using magnetic propulsion.
Solarenemy1 1 week ago
@maxzmo13 Nothing can travel faster or even come close to the speed of light, unless the gun fired neutrinos.
Liamfrombury 1 week ago
@Liamfrombury So your saying the laser sight this gun uses is not firing at the speed of light? Last time I checked the output of a laser was light(photons) and therefore the particles of that energy must be traveling at well the speed of light. So you saying nothing but neutrinos can travel at such a speed is a false statement in this case. There are many particles that can travel at or near light speed. But again they are energy and that is the key. Matter must convert to energy.
Solarenemy1 1 week ago
Usually the firing coil is designed around the desired projectile then the gun follows. A smaller projectile would not work unless the gun was redesigned around that ammo. As for killing, even the OP said this gun won't kill but it can cause a serious injury and if you are stupid enough to make a circuit across the caps and that circuit crosses your heart you are dead. No second chances. The cap mount is sturdy if you go over his notes and build drawings and pics. I would paint them black.
Solarenemy1 1 week ago
Would it be more effective (higher velocity) with a smaller projectile?
Wep0n 1 week ago
Okay, lets get this straight. A gun w/ a better chance of killing the user than the intended target. Gotcha!
opinionatedinc 1 week ago
@opinionatedinc Gotta be quite stupid to be killed by it, but admittedly, the capacitors ain't fitted very handy.
Wep0n 1 week ago
@Wep0n Yeah. Just give me a taser and a billy club, I'll get the job done. LOL!
opinionatedinc 1 week ago
this works on magnetism right? would supercooling help somewhere in the process? I've seen some interesting things happen with just plain metal and liquid nitrozen..
HomoCognitus 1 week ago
U really need to soup this thing up, add extra capacitor, and a few extra coils
okokokokok56 1 week ago
This would make a silent but deadly sniper rifle.
MrRatermat 1 week ago
ummm awesome.
blackspace100 1 week ago
its cool but unless it can be re enginered so its light and will still fire the same or fast speed than a bullet i doubt these will become used by military... which would be cool
MerchantOfDeath15 1 week ago
Didn't really think it would be that powerful...
weeabou 1 week ago
Try some Li-ion cells instead of Ni-MH (much more capacity) :-)
TheError404 2 weeks ago
could you give me the diagram???. I like it
Ghostmorte 2 weeks ago
I would like to see your next project
augdog1230 2 weeks ago
pretty awesome but it doesn't look like something to fear
jospence115 2 weeks ago
@jospence115 At point blank it could crack a rib or go through thin skin. It has no range but does pack a punch. A 30g round at 38 m/s is not something to take lightly. That is 9 joules of energy. It only takes 5 to break ribs and fingers.
Solarenemy1 2 weeks ago
@Solarenemy1 Muzzle energy is 25 joules!
Larsplatoon 2 weeks ago
@Larsplatoon All the more reason to fear it.
Solarenemy1 2 weeks ago
@Solarenemy1 damn I have been silenced
jospence115 2 weeks ago
you are on to something here, if you get together with my company, you can have a career
TheDangerZone999 2 weeks ago in playlist More videos from Larsplatoon
Also I'm not sure if my entire posts are showing up as I am using an iPhone and it doesnt show my entire post after it is completed.....stupid mobile app!
WickeDxRebeLx 2 weeks ago
The firearm part is irrelevant. Im not accusing anyone of anything. I can use "SWIM" if OP deems necessary...I still think that round is too heavy. I am VERY familiar with firearms and bullet tumble etc. The length alone would make tumbling highly unlikely. (.22Hornet vs .22 WMR). Now as said I am not fam. with the electro-aspect and I consider your reasoning, but I am not suggesting to drill it so large that it is essentially hollow. There is def. a fine line. If that round stock "bolt" is app
WickeDxRebeLx 2 weeks ago
Awesome creation!
But it seems to me it's not very powerful. Kinda like a powerful CO2 gun.
freeriding666 2 weeks ago
lol when you turn on the screen it says 666
yo90bosses 2 weeks ago
hey where can people get these things this could be great for snipers or high end hunters
residentmagnum 2 weeks ago
@residentmagnum
You build them, they are never for sell due to the work involved. As for hunting, forget it. This is one of if not the best portable on youtube and it does not have a lethal velocity. It is much easier to penetrate a hard material like steel and plastic then it is to penetrate flesh and muscle. The builder of this one has already confirmed as mentioned in hos notes that this gun IS NOT lethal.
Solarenemy1 2 weeks ago
I'm not familiar with how this would effect the electromagnetic aspect of the velocity in the firearm but I think you need smaller/thinner ammunition, or you need to drill down the center of the back of the round to reduce the weight and get greater muzzle velocity. Of course there is a fine balance between optimal Light/heavy weight effecting the momentum of the round which you will have to experiment with, as a few hundred years of firearms design has shown. Too light and you may have issues
WickeDxRebeLx 2 weeks ago
@WickeDxRebeLx It's electromagnetic, so it is not a firearm. otherwise it would be illegal and CG's are not illegal yet. If the round is too small you will get magnetic saturation and loose energy to the projectile. If it is too light then you will reduce the kinetic energy delivered to the target. A lighter round will also tumble easier. To be honest everything about this CG is done right. Make your own and you will see how things behave outside the norm.
Solarenemy1 2 weeks ago
I like how you use a cardboard stopper. The rounds will penetrate a metal microwave but it stops dead in its tracks once it hits cardboard.....lol
NIGBEATS 2 weeks ago
You know I think the hardest part of building one of these is winding the damn flyback transformers secondary. I would rather go to a dentist sometimes. Maybe somebody should start a business winding custom transformers if they have no life and want to make some cash.
Solarenemy1 3 weeks ago
that's awesome, and i want one.
jmxcore 3 weeks ago
I still heart rail guns but i suppose it's going to take alot of initiative and funding to make one of these practical.
naireland 3 weeks ago
I have no idea what you said but my god did it sound cool.
greenfishticks 3 weeks ago
i want one where can i get one ???? cause i don't want to make one?
HUwalling 3 weeks ago
@HUwalling Your not going to get one then. Mainly because of the time and labor and cost of parts your not going to pay what most builders will ask for their sweat and blood. Mine would set you back 3000 USD.
Solarenemy1 3 weeks ago
@Solarenemy1 ok well i just didnt know cause right now i dont have time for anything not that i just didnt want to do it and i could not get mine to look that good.
HUwalling 3 weeks ago
Excellent video. I'll definitely be reviewing it more when I have money to spare for my own DIY Coilgun. Liked/Favorited.
Although, I thought it was pretty funny watching those projectiles demolish household items and be stopped by what appeared to only be a couple sheets of cardboard. Pretty sure you had a metal plate or something back there, just funny to watch.
BigNorman14 3 weeks ago
@BigNorman14 Cardboard will stop them as it binds around them as they bass through. Unlike the household items that break away from the round.
Solarenemy1 3 weeks ago
@Solarenemy1 Most of the energy was used up smashing the object in front of the cardboard I think. Then there was a plywood board right behind the cardboard, and finally a foam board behind all that protecting the fence. The bullet never got past the wood.
Larsplatoon 3 weeks ago
and what is the max distance of range?
mikado387 3 weeks ago
what is the reload time??
mikado387 3 weeks ago
@mikado387 As you saw in the video you pull back the bolt, drop in a round and push the bolt forward. Total load time about 7 seconds. Now what you did not ask correctly is what is the charge time since it too dictates how often the gun can be fired. That is 30 seconds. So you are looking at about 37 seconds between shots.
As seen in the video the range is only going to be about fifty feet tops at the current velocity.
Solarenemy1 3 weeks ago
Do you have schematic ???
mikado387 3 weeks ago
@mikado387 It is just a ZVS flkyback driver. You can find diagrams and schematics all over the web. You just need to add the SCR for triggering and maybe some sort of control circuit. But if you read below the video it says he will not give out the schematic as it is available everywhere.
Solarenemy1 3 weeks ago
All depends on the mass of the projectile. Newtons laws hold true even in the electromagnetic propulsion world as well. On my gun that fires about the same size round it has the recoil of a high power pellet rifle. If you fire the unit with out holding it in place it will move about an inch backwards from the recoil.
Solarenemy1 3 weeks ago
Man this is sick! It shows you firing that monster but hows the recoil (if any) relative to other guns. I can imagine that it have next to no recoil.
xXMcEpsilonXx 4 weeks ago
Images this... but BIGGER O_o
shark4t 4 weeks ago
Wow why do the last two questions/comments give me a sense of Deja' Vu? Oh that's right they have both been used already. Sorry you both get B's for originality.
Solarenemy1 4 weeks ago
NOOOOOOOOOOO!! NOT THE F-22 !
HPAVELOW53 4 weeks ago
Has the US military hired you to build weapons of mass destruction?
Mrjerry284 4 weeks ago
Have you considered capacitors for rapid charging? NiMH seems obsolete, considering the effort you went to in developing the coilgun.
aleronstube 1 month ago
@aleronstube Did you not notice the four blue cylinders in the stock? Those are the storage caps. A CG must use caps in the storage section. This creates the enormous current (4200 amps+) that no portable battery is capable of to cause the magnetic field that propels the projectile. All the battery is doing is supplying 12 volts to run the charger, meter, and SCR gate voltage.
Solarenemy1 1 month ago
@Solarenemy1 Thanks for the info. I don’t understand why nobody is actively researching battery technology. Cell phones, laptops, electric cars, solar power, literally every portable electronic, they are ALL held back by the limitations of lithium batteries. We need something better, period. It annoys me so much when phone companies come out with a brand new model, while the battery life goes down because they can't drag enough power out of an obsolete lithium system to power it.
aleronstube 1 month ago
So, theoretically if I used a smaller projectile(tiny nails or darts) I could possibly get an increased muzzle velocity at a cost of less terminal energy. I really want one rigged with a hopper, so I don't have to place the round in each time. I saw it takes 30 seconds to charge, but it would save a second or 2 between shots
halopartyboy 1 month ago
@halopartyboy
It takes 30 seconds to charge between each shot. There is no way around this. The gun I just finished takes 5 minutes to charge between shots (much higher capacitance). They only way to speed it up would be to hook it directly to AC mains but then it would not be portable. Thus due to 30seconds between each shot there is no need for a magazine plus loading one round each time gives you something to do during charging.
Solarenemy1 1 month ago
@halopartyboy Your ammo you are looking for is WWII flechettes. I have a pound of them and am also designing a CG pistol just to fire them. However you must consider your ammo as part of the design as it dictates the inner diameter of your coil. Once made you can not change ammo as it will be too small or too big for your inner diameter and barrel.
Solarenemy1 1 month ago
I wish I could give you extra likes for dubstep and Still Alive... but since YouTube won't let me, the like for teh awesumgun must suffice.
AnonRanGER01 1 month ago
Like for portal! This was a video... Im making a note here huge success
dawgdude55 1 month ago
This has been flagged as spam show
1.25kj? Are you sure? Don't looks like this. The magnum .44 has 1.5kj... and there is much more power
lalschl 1 month ago
SHUT UP AND TAKE MY MONEY!
Tsukiyomaru0 1 month ago
totally epic
SuperDavieman 1 month ago
И в черепушку себе еще стрельни, нашел бля мишени. Что за дятлы комнатные эти пендосы...
Storroj 1 month ago
@Storroj
What did he say?
Solarenemy1 1 month ago
I would love ballistics tests
koalabear2 1 month ago
This has been flagged as spam show
haha at 3:37 the MicroWave "bingggsss"
djblackarrow 1 month ago
Comment removed
djblackarrow 1 month ago
Lol very nice work, you should add a key contact switch so no-one can turn it on if they don't have the key :D
ciprianwiner 1 month ago
"Still alive" ? it's mean a Portal gun too soon xD
AnthonyBlackline 1 month ago
I know hardly anything about electrics except wiring my guitar but would using a thinner gauge wire on the firing coil help or make things more inefficient?
Bluesbreaker2010 1 month ago
@Bluesbreaker2010 Actually the opposite is true. The bigger the wire the less resistance there is to current. Resistance is the evil of all CG's resistance converts current to heat and thus your loss of efficiency.
Solarenemy1 1 month ago
barrel rifled? also boat tail the "bullet" it should help with some accuracy
fitbmxseries1 1 month ago
Sorry man, but this is lame. It isn't even accurate.
joshuapratt6 1 month ago
@joshuapratt6 Let's see the video of yours then. Obviously you have more experience and yours is accurate. That's what I thought..
Solarenemy1 1 month ago
This has been flagged as spam show
@Solarenemy1 What the fuck is your problem kid? Myob. It's the truth, if you don't agree you are retarded.
joshuapratt6 1 month ago
Dude, if you got a license to make and sell these you'd be a very wealthy man. Now all you need to do is modify it to fire 12 gauge taser rounds, therefore making it a nonlethal weapon.
KaptainSparta 1 month ago
@KaptainSparta it is non lethal now. At best it might stun a target for a few seconds. Long enough to get in an do damage with another weapon or fist.
Solarenemy1 1 month ago
@KaptainSparta You don't need a license to make, sell, or own one of these. They are not classified as a weapon YET... So make or get one while you can before somebody kills somebody with a much stronger version and they then get classified as a weapon.
Solarenemy1 1 month ago
what is the firing time of the coil? you may be getting "magnetic drag" if the coil is still active as the projectile is passing though it. try shortening the timing and see if your muzzle velocity improves.
jimbob42able 1 month ago
@jimbob42able As stated in the notes the firing time is 4ms which is about right for a coil of this length. If the time is reduced any more his current would exceed the SCR's capability and fry it. At his voltage and capacitance 1ms is the difference of nearly 1000 amps. He would also have to completely redo his coil and barrel assembly to achieve a shorter time.
Solarenemy1 1 month ago
@jimbob42able I'm sorry that was actually 2.6ms. That is already pushing 4Ka. drop another ms and we would be seeing 5+Ka. That would exceed this SCR's pulse rating.
Solarenemy1 1 month ago
Death to toaster ovens!
MoejoTheGreat 1 month ago
Mechwarrior 4 MERCS nice ( :
MorrowindShorts 1 month ago
Will it blend?
tmgage1 1 month ago
@tmgage1 Sure! It can even toss your salad if you stick it in front of the barrel.
Solarenemy1 1 month ago
How would you react if your coilgun ended up in military use at some point?
ERRORcode901 1 month ago
@ERRORcode901 Why would they care about it? As you see it has about a fifty foot range and no accuracy. It is a good model for what it does. But it will never come close to the power of and M4 or similar rifle. To reach that speed and power it would be impossible to make it portable with current tech. Coilgun technology has already been researched to death by the military and thrown out as not being usable tech at this time. Until room temp super conductors, this is the best.
Solarenemy1 1 month ago
@Solarenemy1 I'm aware of that, I meant that it could possibly be adjusted, or even redesigned before being mass-produced for those purposes. Even then, its just a thought.
ERRORcode901 1 month ago
Isn't there some way to make a projectile clip instead of loading them one at a time?
Kreaden 1 month ago
@Kreaden This has been brought up an answered in previous post. It would require a compete redesign of his current breech. Plus the fact he only has a few rounds to fire the effort of redesign for this model would not be worth it. As you see he fires then retrieves the round rather then firing another. That indicates a low total round count.
There is also the cool factor in respect that most renowned sniper rifles are single shot bolt action like this.
Solarenemy1 1 month ago
And by the way I like the song at the end.
Someone7089 1 month ago
I have 2 big 450 Volt capacitors, but they have 4 leads. If anyone can tell me why it would be appreciated because I would like to use them for a coil gun of my own. And also I would like to know if making multiple coils on top of each other going in the same direction would work fine because I have a lot of wire, but the wires themselves aren't very long and it is difficult to make a thick coil without coiling backwards a little which I know is bad.
Someone7089 1 month ago
@Someone7089 Voltage is not the only rating a cap has. What is the uF or MF rating? if it has four leads then there are most likely two caps in each which will be too low of a capacitance. Coils must be would with continuous wire and all the turns must be wound in the same direction and laid evenly. You also don't just wind a coil. You must figure out what your desired inductance should be based on your acceleration time, voltage, and capacitance. Those values dictate coil dimension
Solarenemy1 1 month ago
@Solarenemy1 The capacitance is 470uF. The circuit I unsoldered the capacitors from didn't have a connection to 2 of the leads, only the other 2. So in this case I would want a capacitor with the largest capacitance and voltage possible? I know voltage is important, but I wasn't so sure if capacitance made as much of a difference. I'm also going to see if I can calculate the proper coil dimensions.
Someone7089 1 month ago
@Someone7089 If that is the case then the other two terminal where just for structural support. I would not do more that 500 volts for a portable system. As for capacitance you don't want the most as that will require much higher current to bring it down to zero in time. I would not go over 2500uf total just to keep current manageable. My almost finished rifle is pushing 450 v at 240000uF at a current of 5000 amps during discharge. My SCR is massive and may still fail.
Solarenemy1 1 month ago
so much win
Xishnik94 1 month ago
I find this really interesting, I read in a short discussion that for a railgun (I know, they're different) speed is increased when the object is already in motion and I didn't think much of it til now but if a coil gun and something that already provided acceleration of the object were adapted to fit together could the velocity be increased?
870WM34W4Y 1 month ago
@870WM34W4Y That would be the purpose of the multi-coil guns that you see. Each coil the projectile passes through adds to it's already existing speed so it acts as a cascading effect on increasing the speed times the number of coils.
Solarenemy1 1 month ago
This is an excellent coilgun, good work sir.
Infecti0nrock 1 month ago
@Infecti0nrock Thanks!
Larsplatoon 1 month ago
@Larsplatoon wait I'm confused dont be looking at me as a retard when i ask you this question but it still has to take ammunition? and if so it only fires one bullet? if i may add a good job and all but to be honest i thought you basically made an electric gun lol that shoots lighting. you need to figure out how to make a magazine cart. as said before good job
MegaRyking 1 month ago
@MegaRyking Thanks! Unfortunately, physics do not allow for a gun to shoot lightning. If you want to see that, you'll have to look at sci fi. Yes it fires one round at a time. No need for a magazine when it takes 30 seconds to recharge between shots.
Larsplatoon 1 month ago
@MegaRyking Closest thing you'll find to that in reality is a pulse rifle. Here ya go bud, /watch?v=RUXXGbNS8oY
BigNorman14 3 weeks ago
@MegaRyking "tesla gun" on youtube
plasmaninjaa 3 weeks ago
are you an electrical engineer or something?
Booth272 1 month ago
Uhm, just out of pure curiosity, if you were to make a piece of metal that fits into your CG-33 super-conductive, I.E. dip it in liquid Nitrogen for example, what would the muzzle velocity increase to?
FoxvoxDK 1 month ago
@FoxvoxDK It would only make the round more brittle. The coil and all its interconnects to the SCR and caps is what would need to be super cooled. That way you could go way beyond their room temp current limits without damaging them. Of course then you run more of a risk to your own safety.
Solarenemy1 1 month ago
@Solarenemy1 I see, I've always been wondering why the energy efficiency is so ridiculously low on these things. How does one go about transferring more energy to the projectile in this configuration? Reason why I suggested the super-cooled metal or magnet was that, I thought the amps was what kinda made the projectile melt or come apart. Like the big Railgun the Navy has been building, not saying that these designs are are anywhere near the same though :P.
FoxvoxDK 1 month ago
@FoxvoxDK You are confusing a coilgun and railgun. A coilguun does not vaporize part of the projectile during firing. In fact the only place heat goes is to your SCR and Coild due to internal resistance. It is this resistance that is the killer for coilguns. Super cooling these components would allow you to raise the current much higher which will give a stronger magnetic field in the coil. A coilgun simply pulls the projectile into the coil half way then relies on it's own momentum.
Solarenemy1 1 month ago
@FoxvoxDK The idea is to kick the projectile as hard as possible with the magnetic field from the coil. Because once it leaves the coil it is all up to kinetic energy and gravity. If you notice in the video there is no smoke or flash of any kind during firing. That is becuase in a CG the projectile is the same when fired as it was when loaded. Think of it as nothing more then a magnetic field propelled spear gun.
Solarenemy1 1 month ago
@Solarenemy1 Thank you! That clears it up for me in a very understandable manner! I've never toyed with these things and always been curious about them so, thank you!
FoxvoxDK 1 month ago
I know in the description you said you wouldn't give out a schematic for it, but may i have a parts list?
Asianaeatkittens 1 month ago
@Asianaeatkittens The important parts are all listed in the video, if you look at the white text at the bottom. The rest is up to personal preference.
Larsplatoon 1 month ago
why the fuck is the military not using this tecnology
yo90bosses 1 month ago
@yo90bosses As it is, it has less muzzle velocity than a BB gun. To get to a lethal velocity would require a cap bank that would be impossibly large and heavy for a person to carry. As this gun is now at best it will give you a good bruise. Maybe at point blank in an eye it might be lethal. Without room temp super conductors you will never see a portable coilgun on the same par as a conventional gun.
Solarenemy1 1 month ago
The next generation of silenced weapons.
SpeedDemonXYZ 1 month ago
i just have to say this: amazing, absolutly astonoshing how youve made this. now i like to beleive i know a thing or two about electronics like this but it just occured to me that i know next to nothing. i hope you will be able to make things as awesome as this in the future.
p.s - awesome music choice at the end :)
JOHNNYCOMEKILLU 1 month ago
@JOHNNYCOMEKILLU Thanks! Actually when I started this I was a beginner myself, coilguns are actually pretty simple and are a great way to begin and learn.
Larsplatoon 1 month ago
@Larsplatoon i hope so, i hope to make one, i just need the tools and the know-how first :) i cannot seem to find a straight forward video anywhre on youtube of how to make this, i guess i'll have to look elsewhere, anyway that is even more encredible, the fact that you where a beginner when you did this, awesome :)
JOHNNYCOMEKILLU 1 month ago
@JOHNNYCOMEKILLU try coilgun dot info (website)
Larsplatoon 1 month ago
Parts and time wise your looking a few grand.
Solarenemy1 1 month ago
How much, I want one
alienmanfc6 1 month ago
4:00 Still Alive FTW ; )
TheCoalMinningAddict 1 month ago
@ 2:39
DEVILLLLLLLLLLLL GUN
leetrice24 1 month ago
Today i blown thyristor in mine, so i'm searching videos... IS there some difference in output when putting capacitors parallel/serial?
dingo27mobile 1 month ago
@dingo27mobile Caps work similar to batteries. When in series the voltage they can handle is the value of the lowest cap times the number you are using. In parallel the voltage is the going to be the same as the lowest rated cap no matter how many are in parallel.
Note however that when in series you add up all the capacitance and divide by the number of caps to get your total capacitance. In series you simply add the total capacitance together to get you total.
Solarenemy1 1 month ago
@Solarenemy1 thanks, i'm not so good in electronics but i know this. But i think 2 same serial caps would get same energy, but shorter pulse and lover amps, as 2 parallel. I assume that from playing with little cgs, where too big caps with small vooltage were pulling projectile back and forth (resonating), and same caps rewired for higher voltage (but less capacitance) did not do that. But that only works for SCR, you can switch off mosfet or igbt at the right time of course :)
dingo27mobile 1 month ago
@dingo27mobile I am guessing that you have just made a coil with no real thought in it. The coil and caps from what is called an LC circuit. The coil must be tunes to cause the caps to discharge in the desired time. You can use massive capacitance and tune your coil to still achieve a short discharge. However the current will be extremely high such as the case in my gun I am working on. Your coil is the critical part and tuning it will achieve any desired discharge time you want.
Solarenemy1 1 month ago
@dingo27mobile Tell me what your desired voltage and capacitance is and what size wire you have to make the coil and I will tell you what it's dimensions should be to achieve a 4ms discharge time and what that current draw will be.
Solarenemy1 1 month ago
@Solarenemy1 well i will use 1500uF for 450V, and wire would be 1mm diameter i think. Why should i aim for 4ms?
dingo27mobile 1 month ago