# Making a RAILGUN and then TESTING it!

Hey guys in case you didn’t know the US Navy has been developing an electromagnetic railgun for the past decade and it’s absolutely incredible It’s a highly futuristic weapon that seems straight out of science fiction Using only electricity, it can accelerate a projectile to speeds of Mach 6. That’s over 7400 km/h! Plus it has a range of over a hundred and sixty kilometers! If you guys want more information on that railgun check out the link in the description below Anyway World of Warships approached us and offered to sponsor a project based on their game Naturally, we suggested building a small-scale version of the Navy’s railgun. World of Warships is the perfect balance between action and strategic gameplay Plus if you use my link in the description below and are one of the first 300 viewers to use it you’ll get an awesome bonus, which will give you a huge head start in the game But more on that later, in the meantime, let’s start building a railgun Alright, so before we build a railgun, Let’s talk about how a railgun actually works You see a railgun converts electrical power into kinetic energy by creating a magnetic field that can accelerate a projectile Here’s the diagram showing how that works Now, the factor that determines how powerful a railgun is, is how much current you can push through those rails For a more detailed explanation on how rail guns work I’d recommend checking out electrogoBoom’s video right here So the question is how do we build a power supply that can provide enough current to make a powerful railgun? Most of the time we use lithium polymer batteries for our projects and that’s because they have some of the highest energy densities available in battery form, the problem is they can’t actually put out that much current For that you need a capacitor which can discharge huge amounts of current in a really short amount of time In fact, we’ve already had a lot of fun with these capacitors with Thor’s hammer! Ian: how to place a capacitor inside of Thor’s hammer And it fits pretty good That’s loud! As you can see it packs quite a punch Now one capacitor isn’t enough. We’re going to use 16 Thats big! How heavy is this? So you discharged it right? All right you one upped me over the flamethrower To start you have to turn the pressure on low, and we should probably go downstairs Now crank it Okay, first test of this charging circuit Oh, I think my fuse blew

Whatcha doin there Bogdan? Bogdan: Alright, so we are going to test how long its going to take for this charger to charge up our capacitor bank Get some safety glasses, some hearing protection too because we have to discharge it afterwards Get some safety glasses, some hearing protection too because we have to discharge it afterwards We’re gonna see how long its gonna take And we are gonna double check that the step-down works as well to make sure we can actually measure the voltage on the bank without blowing up every single multi meter we have on the bank without blowing up every single multi meter we have including this one Okay, do you want a welding mask you sure? Okay you ready Now that’s a tenth of the voltage so that’s actually forty volts right now fifty volts sixty volts seventy Now that’s a tenth of the voltage so that’s actually forty volts right now fifty volts sixty volts seventy Bogdan: Cuz it’s black it matches the Hacksmith. James: It’s not black that is grey. Bogdan: It’s a lot better than blue 313 volts big hair pulls me back I Can i just stopp being the host and just become this camera guy? It’s so much more fun Okay, it does seem to be charging a little slowly Okay, it does seem to be charging a little slowly Ah Geez I missed we need a wood stick That was sweet! Its still 212 volts Mmmm. We are getting alzheimers Atomized aluminum great for the brain about two minutes to charge? Atomized aluminum great for the brain about two minutes to charge? Now I’m not a machinist by any means and this is my first time using a CNC lathe So let’s just hit go and see what happens All right, so you might be wondering