I never actually thought this weapon would even slightly work in real life.
I was wrong, apparently.
Finally,someone did it.
From when i was kid,i knew its possible to create this crossbow
Very fun video. I got a new channel to watch now too.
That shot at 20:34 went pretty awry. God that looks dangerous, imagine a piece bending to break and the fragment bouncing back toward them
That is too damn cool.
But god damn does it look almost comically unwieldy :v:
Somehow, I was not expecting there to be Unreal Tournament music in the background of the video. That's kind of a neat touch.
[QUOTE=RenaFox;52777819]I never actually thought this weapon would even slightly work in real life.
I was wrong, apparently.[/QUOTE]
Well it really doesnt. Its not firing rebar, the actual rebar was too thick and too rusted to work and this being a resistance weapon, rusty rebar is all you'll find. The batteries are unwordly too, considering the ampage required.
The battery thing needed a lot of high discharge cells and needed two metal contacts which were received via someone holding two peices on each side. It slightly works in that you can make a crowbar fire metal dowels. which is what normal regular crossbows often do, the heating up part? maybe is engineered better.
Flame throwers are scary because they are rumored to literally cook you from the inside out. Your bones heat up and pretty much boil you from the inside
something like this would do quite the same but on a smaller level. the surrounding tissue would just smolder and boil immediately, and because its not a clean slice in it's just going to be even worse
I'm going off bad memory here, but I've heard that in medieval times they would use wax to glue arrow heads, and hooked arrows that you can't pull out, so the head would just... get stuck. Arrow heads could get stuck so terribly that the only way to get them out is by hammering them completely through, lets say, the leg, otherwise you'd need complicated surgery to get them out. I'm not a doctor or historian though so don't take my word for it.
Imagine if the rebar was hooked, possibly even had a head that was on tight enough to stay on in fight but fall off if pulled out. You'd have a smoldering steel rod in your fucking chest. [B]You aren't going to live.[/B]
Cant have a thread on the HL2 Crossbow without this video
[video]https://youtu.be/y3MP0z2_IyE[/video]
[QUOTE=Viva;52777896]Well it really doesnt. Its not firing rebar, the actual rebar was too thick and too rusted to work and this being a resistance weapon, rusty rebar is all you'll find. The batteries are unwordly too, considering the ampage required.
The battery thing needed a lot of high discharge cells and needed two metal contacts which were received via someone holding two peices on each side. It slightly works in that you can make a crowbar fire metal dowels. which is what normal regular crossbows often do, the heating up part? maybe is engineered better.[/QUOTE]
I think despite being made by resistance groups they'd probably have access to something that could heat it quite well? Combine tech or something like that?
Long shot but might do a little bit towards justifying it in game.
[QUOTE=usaokay;52777864]Seemed really unsafe to hold onto a scorching hot rebar for a couple seconds (even if you're a normal resistance member without an HEV suit), so it's cool they found out how to heat it up.[/QUOTE]
it's not hot until gordon puts it in place, though.
[QUOTE=ZombieDawgs;52777908]I think despite being made by resistance groups they'd probably have access to something that could heat it quite well? Combine tech or something like that?
Long shot but might do a little bit towards justifying it in game.[/QUOTE]
name any weapon that utilizes combine tech that isn't directly looted combine weapons from fallen soldiers. Gravity gun not withstanding as that was made by a scientist from black mesa and is alone in existence. For that matter rebels using combine tech IN GENERAL is incredibly rare, the scientists behind the rocket program and everything else barely if at all use combine tech.
[QUOTE=Viva;52777929]name any other weapon that utilizes combine tech that isn't directly looted combine weapons from fallen soldiers. Gravity gun not withstanding as that was made by a scientist from black mesa and is alone in existence. For that matter rebels using combine tech IN GENERAL is incredibly rare, the scientists behind the rocket program and everything else barely if at all use combine tech.[/QUOTE]
I was just spitballing ideas :x
[QUOTE=ZombieDawgs;52777932]I was just spitballing ideas :x[/QUOTE]
unfortunately its tough to really see what the rebels have come up with as this is the only 'scavenged' weapon in the game. Everything else is outdated technology, so it seems the rebels arent exactly crafty engineering wise, most of their existence is due to a few scientists, but all their stuff is severely outdated.
[QUOTE=Hell-met;52777928]it's not hot until gordon puts it in place, though.[/QUOTE]
Fun fact: The battery actually doesn't work at all. Gordon Freeman resonates his hotness into the bolt, which is what causes it to smolder.
[editline]13th October 2017[/editline]
it's actually not because he's sexually hot
blame years of swimming in radioactive waste
I feel like they heated it up a little too much, the one in game doesnt get glowing yellow-white hot, its like a reddish orange simmer.
I am curious to know if you could achieve the same thing with a couple microwave transformers and a shitload of quick discharge ultra capacitors. Could probably take that ungodly battery pack into just a few that you juice up every few shots. Might make it weigh less too.
The fact that it went through the fucking door is awesome and it would be nice to have seen that in HL2, with a simmer at the entry/exit point. Kinda like the tau cannon but without splash damage.
I love how it sparks the exact same as the hl2 crossbow a couple times.
[QUOTE=haloguy234;52778033]I am curious to know if you could achieve the same thing with a couple microwave transformers and a shitload of quick discharge ultra capacitors. Could probably take that ungodly battery pack into just a few that you juice up every few shots. Might make it weigh less too.[/QUOTE]
Transformers let you exchange amps for voltage or vise versa. You can take 120v 15a and turn it into 1v 1800a. People using microwave transformers replace the secondary winding with like 2 turns of heavy wire to get that kinda ratio. It's actually the same amount of power, just in a different form. Amps is what you use to melt wire.
Super caps are 2.7v or something like that. You'd need like 45 of them to use the microwave transformer. But you really don't need the transformer since the caps themselves can already drop hundreds of amps. But I think the batteries they used were likely the best option in this use case.
Oh and this video is pretty cool. I'm surprised it took this long for someone to try this. But the execution was pretty high quality.
[QUOTE=gjsdeath;52778219]Transformers let you exchange amps for voltage or vise versa. You can take 120v 15a and turn it into 1v 1800a. People using microwave transformers replace the secondary winding with like 2 turns of heavy wire to get that kinda ratio. It's actually the same amount of power, just in a different form. Amps is what you use to melt wire.
Super caps are 2.7v or something like that. You'd need like 45 of them to use the microwave transformer. But you really don't need the transformer since the caps themselves can already drop hundreds of amps. But I think the batteries they used were likely the best option in this use case.
Oh and this video is pretty cool. I'm surprised it took this long for someone to try this. But the execution was pretty high quality.[/QUOTE]
Transformers can also be used to dramatically step up voltage though, but yeah you still get the trade off of massively decreased current when you massively step up the voltage. Not sure if you'd be able to apply them in a portable form, you'd probably have to have it plugged into a wall lol. I know they're powerful enough to spot weld.
You'd want a higher current in this case, not a higher voltage. A higher voltage actually lets you transmit energy more efficiently, i.e. with less energy turned into heat by resistance. That's the opposite of what they're trying to achieve there.
[QUOTE=haloguy234;52778316]Transformers can also be used to dramatically step up voltage though, but yeah you still get the trade off of massively decreased current when you massively step up the voltage. Not sure if you'd be able to apply them in a portable form, you'd probably have to have it plugged into a wall lol. I know they're powerful enough to spot weld.[/QUOTE]
Didn't mean to imply they only work in one direction. The microwave transformers mentioned before for example brings the voltage up a couple thousand volts.
You could definitely make them portable. All depends on what you're trying to do. To be honest, when it comes to shear power, li-po batteries used in the video give you more power than what is available at a typical wall outlet just can't do it continuously (depending on your country and the outlet). For example, a standard outlet in the US is 1800w (120v 15a ), a 11v lipo 50c 8ah battery would be ~4500w. That's a scary amount of power.
[QUOTE=Dr. Evilcop;52778444]You'd want a higher current in this case, not a higher voltage. A higher voltage actually lets you transmit energy more efficiently, i.e. with less energy turned into heat by resistance. That's the opposite of what they're trying to achieve there.[/QUOTE]
Right, but a large rod of metal is going to have a pretty high resistance and be a pretty large load. The only way to deliver a high current into a high load is to either reduce the load (change the resistance) or increase the voltage. More voltage, more forward current. Depends entirely on the trade-off of current loss from the boosted voltage created by the transformers.
You can have 2000A from a 1V supply and that won't even do anything to human skin, let alone enter a thick steel rod or even a rusted over hunk of rebar. The overall current draw is going to be dictated by the load anyway, so at 1V if you have a load of 1mOhm, the current flowing into it would be literally a single microamp, aka literally nothing. Even if you bumped that up to 11V, a 500Ohm load is only going to pull around 20mA. An even larger load would pull less.
The only way to pull 2000A at 1V would be to have an actual dead short, which they are creating a short by using the rod, but the rod itself is still going to induce a load (resistance) on the circuit.
Of course I've never actually tested the resistance across a steel rod before, so I have no idea what it is. If it's not as large as I'm thinking it is and is <1Ohm then yeah, you wouldn't need much voltage to fuck it up.
Video needs headcrab zombie effects added to it.
[QUOTE=J!NX;52777902]Flame throwers are scary because they are rumored to literally cook you from the inside out. Your bones heat up and pretty much boil you from the inside[/QUOTE]
How does fire on your outside cook you from the inside out?
Flamethrowers are fucking scary because being burned alive is horrifying. If anything, being burnt from the inside out would (competitively) be a mercy as your heat and lungs would fail very quickly.
[QUOTE=J!NX;52777902]Flame throwers are scary because they are rumored to literally cook you from the inside out. Your bones heat up and pretty much boil you from the inside
something like this would do quite the same but on a smaller level. the surrounding tissue would just smolder and boil immediately, and because its not a clean slice in it's just going to be even worse
I'm going off bad memory here, but I've heard that in medieval times they would use wax for arrow heads, and hooked arrows that you can't pull out, so the head would just... get stuck. Arrow heads could get stuck so terribly that the only way to get them out is by hammering them completely through, lets say, the leg, otherwise you'd need complicated surgery to get them out. I'm not a doctor or historian though so don't take my word for it.
Imagine if the rebar was hooked, possibly even had a head that was on tight enough to stay on in fight but fall off if pulled out. You'd have a smoldering steel rod in your fucking chest. [B]You aren't going to live.[/B][/QUOTE]
Never heard of using wax on an arrowhead to get it stuck inside a wound, but most arrows were hard to remove due to hooks or the shape of the arrowhead. There were several ways to deal with this, if it couldn't be pushed through.
One way was to just remove the shaft, pack the wound with a mixture of honey, wine and flour and let it heal. The arrowhead would still be stuck inside, but this was often done if they arrowhead got stuck in a bone. The other option would be amputation, which was all too common in medieval times.
Another way was to not do anything at all for a week, after which the arrow slides out easily because the wound has started to fester.
A surgeon could also cut around the wound to extract the arrowhead, and then burn the wound shut.
The last option was specifically thought up when Henry V was shot in the cheek with an arrow. A masterful surgeon made a tong-like tool which was used to extract the arrow without creating a large wound. This is the only instance of this tool being used as far as I know though.
This hot rebar doesn't really have a lot of killing potential though. At least compared to a regular bolt. While a smoldering steel rod sounds and probably is very painful, it's not very deadly. It instantly cauterizes the wound. Unless it hits you in the chest or head and kills you directly, you'll probably survive. A regular bolt or arrow would've been hard to remove and you'd have the risk of bleeding to death. A wound created by this hot rebar is cauterized, stopping any bleeding. The 2nd and 3rd degree burns increase the risk of infection, but a normal arrow wound is already very likely to get infected.
The only advantages this bolt has over regular bolts is the chance to start fires, and the chance to cause a person to go into shock from pain/overstimulating nerves.
[QUOTE=joost1120;52778942]Never heard of using wax on an arrowhead to get it stuck inside a wound, but most arrows were hard to remove due to hooks or the shape of the arrowhead. There were several ways to deal with this, if it couldn't be pushed through.
One way was to just remove the shaft, pack the wound with a mixture of honey, wine and flour and let it heal. The arrowhead would still be stuck inside, but this was often done if they arrowhead got stuck in a bone. The other option would be amputation, which was all too common in medieval times.
Another way was to not do anything at all for a week, after which the arrow slides out easily because the wound has started to fester.
A surgeon could also cut around the wound to extract the arrowhead, and then burn the wound shut.
The last option was specifically thought up when Henry V was shot in the cheek with an arrow. A masterful surgeon made a tong-like tool which was used to extract the arrow without creating a large wound. This is the only instance of this tool being used as far as I know though.
This hot rebar doesn't really have a lot of killing potential though. At least compared to a regular bolt. While a smoldering steel rod sounds and probably is very painful, it's not very deadly. It instantly cauterizes the wound. Unless it hits you in the chest or head and kills you directly, you'll probably survive. A regular bolt or arrow would've been hard to remove and you'd have the risk of bleeding to death. A wound created by this hot rebar is cauterized, stopping any bleeding. The 2nd and 3rd degree burns increase the risk of infection, but a normal arrow wound is already very likely to get infected.
The only advantages this bolt has over regular bolts is the chance to start fires, and the chance to cause a person to go into shock from pain/overstimulating nerves.[/QUOTE]
You're forgetting impact forces. A piece of rebar hitting you at crossbow speeds, more in line with the game than the video, would shatter basically everything. Short of a lucky shot where it just pierces all the way through dodging bones, even a grazing hit is gonna lead to a break. Regular crossbow bolts themselves can do this, but a piece of rebar? Even if you survive the initial like chest shot, you've got shattered ribs if not a shattered sternum. In addition, since it has cauterized the wound, the extra effort required to get the thing out could potentially make it worse by shifting everything around if you're not careful.
[QUOTE=DeVotchKa;52779037]You're forgetting impact forces. A piece of rebar hitting you at crossbow speeds, more in line with the game than the video, would shatter basically everything. Short of a lucky shot where it just pierces all the way through dodging bones, even a grazing hit is gonna lead to a break. Regular crossbow bolts themselves can do this, but a piece of rebar? Even if you survive the initial like chest shot, you've got shattered ribs if not a shattered sternum. In addition, since it has cauterized the wound, the extra effort required to get the thing out could potentially make it worse by shifting everything around if you're not careful.[/QUOTE]
Yeah, it's a big piece of metal, but does it really weigh up against a regular 500lb crossbow? A piece of rebar has very little chance of actually penetrating a person wearing regular clothing. You'll suffer a very large bruise and broken bones, but you won't be dead. If it actually flew at the speed of the game, it would be very dangerous, but if you had a crossbow of that poundage you could probably penetrate AR500 plates with regular hardened bolt heads. At which point you might as well just grab a gun, because those bolts are probably going at sonic speeds. Put a broadhead on it and you're literally cutting 3 inch wide cuts straight through a person. You wouldn't even have to worry about pulling the broadhead out, because at such power it probably won't even stop unless you hit some big bones. Even then, you're more concerned with stopping the bleeding.
Since the wound's cauterized with the hot rebar, you might shift everything around, but is that really worse than bleeding to death or not being able to remove a broadhead at all?
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