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That’s pretty helpful to know in a post-apocalyptic scenario.
That’s pretty fucking awesome.
Take all prisoners, a few hundred million of this things and BANG!!!!
energy crisis solved!!!!!
Coon has a good point.
This is clearly a massive lie. How is it nobody else has recognized that?
Esplain
This poster basically says that by pushing your way two feet through a turnstile, turning it about 2/3 of a turn, provides more than 10% of the energy needed to propell you and some fraction of a 200 ton train (assuming 8 car train) thousands of feet (if you’re going one stop) or several miles.
Let’s say it’s crowded and there are 100 people per car and you’re all going 1000 feet just to the next station. 100 people x 8 cars = 800 people. 8 cars x 50,000 lbs per car, 200000 pounds of train. 200000 lbs / 800 people = 250 lbs of train per person (this is a very low number given I’m assuming it’s packed like a sardine can). This would mean your two foot push through the turnstile provided enough energy to carry your own weight and your share of the trains weight 100 feet. That’s assuming a completely packed train and a super short journey.
If there are fewer people then your share of the energy is larger because more of the train is yours to push. If you’re going farther than 1000 feet (which is probably less than the distance between any two stations on the same line), then your input at the turnstile would have to be even greater.
The poster is clearly horse shit.
Fuck, make that 400000 lbs of train, 500 lbs per person.
soong, i am disappoint
that poster is obviously a trolling ad
The door can be geared to provide several full turns on an electric generator without creating too much resistance on the door. It depends on the ratio of the gears.
🙁 I thought you were actually going to know what the fuck you’re talking about and not be some try hard asshat.
Your proof is not proof at all and your stats are bullshit.
Maybe it does and maybe it doesn’t but you have no idea either way.
You thought? You didn’t think at all. Your post proves you’re floating through a world of which you have zero understanding.
My figures were conservative and rounded for simplicity (clearly not simple enough for everyone). The actual weight of a New York city subway car is 85,200 pounds, not 50,000. And I’ve looked it up, the shortest distance between any two active stations on the same line is all of 600 feet. Let’s call it a 10 car train because they operate from 8 to 11 cars in length. So, that means the train weights 852,000 pounds or 426 short tons. Let’s suppose each car was filled to the limit at 200 people per car. That’s 852000 pounds of train/2000 people = 426 pounds of train per person plus their own weight. So somehow you could impart enough force to move 550+ pounds (train+you) of material at least 60 feet with just two or three feet to get it rolling?
I think what you may be missing her is something known as the First Law of Thermodynamics. It says that you can’t get more energy out of something than is put in. If the turnstiles were attached to generators and they were so highly geared that they could extract that much energy out of 2/3 of a turn, then nobody would be able to get through a turnstile.
And in all of this, I haven’t even taken into account how much energy would actually be required to accelerate that mass at 2.5mph/sec² (which is how fast a subway train accelerates).
I genuinely feel sorry for you. The world must be a horrible and confusing place to anyone with so little understanding of how anything works.
Actually, Magnus kinda has a point.
We’re all really speculating here, and know one knows for sure.
I’m not missing anything at all actually you are. You’re missing my point and anything close to being an actual fact or figure.
You’re just bullshitting. More bullshit is not a good way to get out of being called out on previous bullshit.
I feel sorry for you genuinely. I bet you’re the guy at the party who really wants to be liked so he one ups everyone and tries to impressive everyone with his lame bulltshit/attempts at showing off an intellect that isn’t there and in the end just never gets invited again.
Bullshit some more if you’d like. I’m not here to keep you from embarrassing yourself. Just know that any reasonably intelligent person will have you pegged as a fucking idiot within 3 sentences or less. That’s a general life rule for you.
argumentum ad hominem
Where are your facts and figures?
Fact: you’re a retard
Figure: your posts
Satisfied?
Don’t be a hypocrite, Soong. Your guilty of argumentum ad hominem also.
Why don’t you nerd stop arguing about numbers and figures and step back into reality. Everyone knows the emery produced by a turnstile may come of some use but not enough to make and kind of a impact on the energy needed to run a train. Not to mention all the wiring, batteries, electronics, and maintenance costs to go with it. Anyone who thinks this poster isn’t a lie is a moron. Thank You.
soong, I think “used to run” means lighting the subway platform etc , not the subway itself.
It says “power the train”.
If only we could harness the power of your bullshit.
A 4 tonne train plus 6000 people travelling through the matrix at 50 feet per high school math means if you subtract the lack of knowledge of the important variable of how the whole system is constructed means that it would take you 400 exhaled bullshit breathes to power one trip from lower Manhattan to the moon.
I agree, something isn’t right about this. To add to the mystery, I can’t find any other mention of this ad campaign, even on the website listed on the poster. I am going to look into this. Being a Civil Engineering student I ought to be able to find -something-…
lol you guys obviously a fake.
Yeah, April Fool’s joke.
onearth.tumblr.com/post/5137636169/not-really-this-was-apparently-an-april-fools
I bow to your Google-Fu… I found this too, but you beat me to the punch.
You also have to think it could be including the exit turnstile. Just sayin
But the exit turnstyle would take energy out of the system because it’s turning backwards.
Lets say that one person going through a turnstile generates 200 watts of up geared energy over the course of 15 seconds. The generator keeps spinning through rotational inertia from the push. An engagement system like on a bicycle would let the turnstile stop but also keep the generator moving.
Now, multiply that by a tough estimate of 10,000 turnstiles that are all over the city and linked to the same grid. This would generate 2,000,000 watts of energy for 15 seconds if all the turnstiles were used at once in rush hour. This would not be a constant energy as it would come and go as people do. But in the grand fashion of NYC there’s a shitload of people constantly going in and out of the turnstiles every day, all day.
Stay with me here. So if there’s, 2,000,000 watts produced for 15 seconds every other 15 seconds(being generous with the numbers here) , that’s 86,400,000,000 watts of power generated over a 24 hour period at peak turnstile usage for all those minutes. Actual numbers would be much lower but this is at best numbers. This alone is a fantastically high number alone. But in the sense of all the power that the NYC subways system uses, this definitely offsets some of their power consumption. And if the power consumption is down by even 5% for the whole month because all the turnstiles are generating power, this saves them a shitload of money.
You just demonstrated you don’t know what a watt is. Your argument is invalid.
In college we use power and energy interchangeably all the time. Anyone with a half-intuitive understanding of electricity knows what you’re talking about depending on the context.
Now, whereas you just did gradeschool analysis with straight arithmetic, our buddy Khyren here is taking into account the real-time parameters of the problem, while speaking in terms of electrical energy, and providing a much more convincing analysis.
I’m not going to check his figures, because I don’t care enough. But even if he was pulling them out of his ass you could use this as a lesson in the art of bullshittery, because he’s far, far better at it than you.
Daily electrical consumption in the US is about 10.6 billion killowatt hours which is 1/8 of the LUDICROUS figure of 86.4 billion watts which you have being generated by turnstiles.
Oh, I see, you’re basing your argument on conditions in your own personal universe where a thousand is the same as one is the same as 24.
“Lets say that one person going through a turnstile generates 200 watts of up geared energy over the course of 15 seconds.”
200 watts of power is about what a Tour de France cyclist puts out while cruising on level ground to keep up with the pack. A moderately in shape person will put out about 100 watts when exercising on a stationary bike. Gearing up (or down) doesn’t create more power. Gearing can increase torque, but not power. A person going through a turnstile is not putting out exercise bike power for 15 seconds just to go through a turnstile. That puts your base assumption off by at least one, if not a few orders of magnitude.
April Fool’s gag –soong & flammable are correct.
mcbrooklyn.blogspot.com/2009/04/subway-turnstiles-in-brooklyn-to-go.html
Wish I had read lower in the thread before commenting. Egg on my face.
Listen, magnus-buttfoorson, and whomever else still wants to argue this; All I’ve been doing is trying to illustrate why the info on the poster must be false. If you don’t understand the math and physics of it, that’s fine. But once it was revealed to be an April fools joke, and you continued to support it, it becomes absolutely clear that you are either A) a troll, B) a fool, or C) both.
You’re a knob.
You made up some stupid bullshit figures and tried to bullshit your way through bullshit equations that make no sense. You tried to look smart and fell on your face and ever since you’ve been bashing your own face off the ground hoping you’ll be able to smash through into something resembling reasoning for your stupidity.
Just shut the fuck up, retard.
I am right and you are wrong. Neaner neaner neaner.
Oh Jesus, you’re going to make me defend Magnus, aren’t you?
Granted your supposition was correct, but your reasoning was flawed. That’s the point he was trying to make.
Magnus was right. You just regurgitated a bunch of figures that didn’t prove anything. Your argument was tantamount to LOL IT’S REAL BIG IT CAN”T WORK.
That, my friend, is not science.
There was no science or physics in your post. It’s all grossly oversimplified supposition. You just jumped to conclusions. Here’s a good example of what I’m talking about:
“If the turnstiles were attached to generators and they were so highly geared that they could extract that much energy out of 2/3 of a turn, then nobody would be able to get through a turnstile.”
How did you draw your conclusion? Show your work.
everything doesn’t have to be proven through science. You can have a general understanding of electricity and know that it wont work. Like me for instance. I’m no scientist or nerd. But I operate a power plant in Baltimore and I knew this poster was horse shit. plain and simple didn’t need proof or a explanation. Its big it wont work is actually a better answer if you ask me.
So in that second to last paragraph, that is accelerating to 40mph with 86.4% of the power coming off the grid, not the athletes. The human power generated with turnstiles on both ends would be enough to get the car up to 5mph.
You’re all the same. You criticize what you don’t understand. You criticize when it’s simplified for you. You demand the real math when you can’t apply common sense to a dumbed down version. You offer no facts, figures, or math of your own to support your gut reaction that you feel I’m wrong.
The poster says the turnstiles generate 13.6% of the power needed. The R142 type B subway car, which is a very modern car in use in the New York subway, draws 313200 watts/hour and has a capacity of 188 people. The most generous figures I have found for power generated by physical human exertion are listed at 75-150 watts per hour with footnotes indicating that professional athletes can output nearly double this for short periods of time (minutes).
So let us assume we have an Olympic athlete about to get in a train car along with 187 of his friends and they can each output that full 300 watts while pushing through a turnstile. Well they aren’t going to be putting out 300 watts for a full hour because it doesn’t take an hour to push through a turnstile. Let’s say it takes 6 full seconds to get through that turnstile (which is ridiculously generous in that 6 seconds would be a long time to get through a turnstile).
188 Olympic athletes TIMES 6 seconds per athlete going through the turnstile at full power EQUALS 300 watts for 1128 seconds OR 18.8 minutes. That gives us a very oddball measurement so let’s convert that to kilowatt hours. 18.8 minutes divided by a 60 minute hour gives us a fraction of almost 1/3 but is slightly less; written in decimal format it’s 0.313? . That notation means the last 3 continues indefinitely (0.3133333333333333). So if we multiply the 300 watts/hour of human output times the fraction of an hour we had that output, we get a figure of 94 watts/hour or 0.094 kilowatt hours.
A subway car full of 188 Olympic athletes who each generated the maximum conceivable human output pushing through a turnstile attached to a 100% efficient (read:magical) generator would produce enough power to run that car for…
313200 watts needed to power the car for an hour divided by 3600 seconds in an hour = 87 watts per second or 0.087 kilowatt hours per second.
0.094 kilowatt hours total generated by the Olympic athletes divided by the 0.087 kilowatt hours per second drawn by the train car equals enough power to run the car for a FULL 1.080459770114943 seconds.
Going back to the poster, that would be enough power to run the car 13.6% of a 7.944557133198107 second trip. If we assume they have to push through turnstiles at the beginning and end of the trip, they’ve generated enough power to account for 13.6% of a 15.88911426639621 trip.
Now, granted, the power draw of the car is not constant given the variable speeds of the train, wind resistance, the weight of the human cargo, etc. HOWEVER they do draw full power when accelerating so assuming our Olympic athletes boarded the train when it was not moving, they’ve provided enough power to accelerate to almost 40 mph before drifting to a stop (that’s 15.whatever seconds times 2.5MPH per second of acceleration).
BUT it doesn’t take 6 seconds to go through a turnstile, the turnstiles are not attached to generators (magical or otherwise), the people going through them are not Olympic athletes, and they don’t have to use their maximum physical exertion to push through.
Is that enough facts, figures, and math?
Nope
Any scientist will tell you that extending decimal points enhances precision, not accuracy.
Soong, nice bit of write up there. I haven’t pulled out my old Ti89, but the logic follows. You do realize though that their objective is not to prove you wrong but to piss you off, right? Just call Magnaguy a hippie and move on. ; )
Fuck this and fuck you people. I’m right.
Don’t be so hypersensitive. It’s just the internet.
I was going to explain you how a troll works but then I realized you might be meta-trolling us all.
Just ask Mythbusters!