My Second Coil Gun

Completely Portable single stage, 100 joule(ELECTRICAL ENERGY), bolt action, 6 round mag

soon to be dual stage, 200 joule(again ELECTRICAL ENERGY)

I've had a few ask how I built this gun so rather than answer everyone's questions individually I'll just answer it here. I started with a 12 volt SLA (sealed lead acid) battery that I found online somewhere. That powers a power inverter that you would normally use in a car to get 120 volts ac. That powers a voltage multiplier ( google it to find out what that is if you don't know that's how I found out). And that puts out the 385 to 400 volts to charge the caps. The capacitor bank is made of 3 electrolytic Caps that have a 450 v. capacity rating and I believe are 470uF each. The box in between the barrel and PVC pipe are 2 solid state relays wired in parallel to fire the coil. There is another solid state relay that turns the charging on and off. the Coil is made from 2 strands of 22awg magnet wire( it was what i had next time I think I'll use 1 strand of 18awg). From what I've found so far the size of the coil depends on the size of the bullet and cap bank. Mine is a little bit longer than the bullet and about 1" in diameter. I don't think mine is quiet right but I'm still working on it. There is also 4 hi cap diodes wire anti-parallel to the coil. This protects the caps and charger from the reverse voltage created when power is removed from the coil. So the Gun is basically controlled by 4 switches. The red switch is the main power and the blue switch turns on the charger. The safety switch allows the gun to be fired and the trigger turns on the relays that power the coil while at the same time turn off the charger. The frame is something that i just through together in a day to make sure the gun will actually work. The final version won't even look the same. I want to build this out of plastic. I also am looking for ways to make the charger smaller.

So for the future plans:
1. adding a second stage. this might take a while. I need to use a PIC and don't have much experience with them.

2. semi-automatic fire. This will be done with a solenoid that knocks the bullet in to the first coil.

3. select fire. I want to be able to choose between one shot using 2 coils in secession or 2 shot burst using the 2 cap banks to fire the first coil twice. Or using the 2 banks as one big one to power a second coil gun. Kinda like a grenade launcher but instead of a grenade it will fire a bullet that has been hollowed out to fit a flash cap that can be charged to about 250 volts. I also want to swap out the solid state relays for SCR's because they will be a lot smaller.

There are other things but I'm going to keep them a secret until I'm sure there going to work the way I want.

Any way hope this helps, I'll put up more video as I get more stuff working.

Category:

Science & Technology

Tags:

• coil
• gun
• portable
• coilgun
• gauss
• rail
• railgun
• rifle

[protonman7]

It's much easier to sit back and make little funnies about this kid than it is to set

down the KFC, and get your fat asses off of the couch and DO SOMETHING. At least he did THAT much. Your idiot kids will be pumping his gas, and flipping his burgers until they get on disability and sponge off of the rest of us while THEY make fun of HIS kids' time machine.

[parkervidal1]

make one that can kill things dammit

[DrPlatypusStarcraft]

Larger capacitors and 5 stages.



[Akweksherario]

With what I have learned thus far, using a polymer lithium battery would be much more efficient. Also, attempting to make your coil gun a multi-stage (while difficult) will grant you more power. Your ammo is a good size (well done!) :D You may also look into integrating the battery into the magazine, so you may have to shuffle some stuff around. Lastly, adding rifling to a copper tube (instead of using normal PVC pipe) will give you more accuracy and range. This is what I’ve learned so far

[Iamthedudeman00]

Lol good effort! You got everything I can imagine you can put on a rifle!;)

[MrTeamMarshallville]

well ur gun can nock over a dr pepper can mine can go through 2 cars

[nathanketterer]

@7ReyZor you sir, are an idiot, that would be like saying a 12 gauge slug sucks or a .45 acp sucks. i have personally shot both and with 20/10 vision it is easy to see the projectile go down range. even with assault rifles like the .30 shot by an SKS, you can often see the bullet in air.

[crazydude764]

Terrorist?

[Akweksherario]

Starting off with no electronics knowledge and find it less than easy to make one... O_O But ya know... eventually I shall. And I will post it and there will be much rejoicing. lol Anyways, I love what you've done with yours. Add a scope and you will have played your boss card like a... well... like a boss.

[xXtacosXx1000]

make it bigger and it will be a MAC gun

[PhantomSavage]

@parkervidal1 currently his coil gun design doesn't have enough stopping power and fires solid metal pegs... but if he had some more power and fired large nails/spikes it could easily be a lethal weapon

[Bell99kill]

homemade sniper rifle ?