Re: Electrify Vehicle Body?

Try a old spark coil from a 1930 car. it'ah knock your dick stiff. Believe me. Been their done that don't want to touch it again.

You were not grounded to the car? I bet you felt the path of the electricity... Did it go through your feet from the ground or from where ever you were touching metal on the car?

I've never tested the theory, but it seems you would not be shocked simply because you were standing on the ground (barefooted) while touching the coil.

if the person is wearing shoes leather or rubber soled shoes, how do they make a grounded conductor???

just cut in some gun ports in the doors get a idea from armored cars of the size and shape or those rotating gun mounts you see on the old wwII tanks and tint the windows I sure that will be a deterrent

Good point. Most people are wearing shoes that aren't brand new. So they've likely sweated in these shoes for a while, allowing it to permiate the rubber. It doesn't take much voltage or amperage to shock the hell out of a person. If you're puching a shit-load of both, then the sweat will likely conduct enough electricity to do the trick.

I think you're right. Unless you have a big "high voltage" sign painted on your door, a shock system won't deter much. I wouldn't count on sweaty enough shoes for my security.

I want a turret gun!

Why don't birds setting on a power line get shocked?

Ed

Discovery Channel did a show on that a while ago and it turns out a lot of the larger birds 'are' getting electrocuted because they can touch more than one wire at a time on some certain configuration of poles. There was talk of changing the wire layout on those poles or something like that because one species was endangered. Maybe a falcon or hawk, I don't remember.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 (More Off Road album links at bottom of the view page)

Apples and oranges. He's talking about static electricity, you're talking about current flow.

Even with static electricity, he is wrong. You can take an enormous static charge and never feel a shock.

You feel a shock when the static electron excess drains off through your body to an area of lower potential. It can go through your shoes, whatever. The path is one of high resistance, but is nontheless a flow of electrons.

If you want to talk conventional current, it is still the same principle.

Not enough capacitance between the bird's body and ground.

Its not true that you "don't need a complete path," you just need sufficient capacitive coupling.

Birds on powerlines dont get shocked because their feet are too close together. And yes in fact I was talking about static, not AC/DC.

Wrong in what way?, By 'take an enormous charge' I assume you mean 'hold' an enormous charge as 'take' could be viewed in different ways.

Yes, but did you consider in the case of a car, perhaps your body is the area of lower potential? Have you never stepped outside of your car, only to be shocked by that same car?

Yes it is. conventional current is sort of trading 1 electron for 1 electron hole so to speak, one at a time. static flow is trading an enormous number all at once.

Sad evidence of the failure of US schools to teach even basic science.

Birds on powerlines don't get shocked because they're not grounded.

"Ground" is an oversimplification. Difference of potential is the cause of current flow.

Current takes the path of least resistance. Unless the powerlines are superconducting, they have resistance.

In truth, the bird is always being shocked if their is no insulation on the wire. Its just very small. However, if the bird doubles its legspan, then it will double the current flowing through its body. Still this is very small.

now mix in a larger bird with an even bigger legspan (or distance between where it plants its feet on the wire).

Its all very scientific.

p.s. if powerlines were DC birds would probably be dropping in much larger numbers. Care to know why DC is more dangerous?

Daniel was right, pretty sad....

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail >

To be clear, birds sitting on power lines DO have a complete path. In the one leg, out the other. electricity flows through both the wire and the bird. Bird has much higher resistance so it prefers the wire. But make no mistake, a small amount is indeed flowing through the bird.

Much LESS than the resistance of the bird's body. Plus power lines operate at such high voltages that the CURRENT flow is relatively small. Since the voltage drop across a given distance down the line is the product of current times resistance, the voltage drop down a given distance of power line is also very small. Your point is ridiculous. The bird's feet could be 100 yards apart and there would probably be less than a volt or so. Your point is ridiculous. The much bigger danger to birds is the high voltage (potential) of the power line relative to ground or to other legs of the powerline.

Given that its LESS dangerous than 50 or 60-Hz AC, this should be very good....

I have to agree. Absolutely clueless.

Do you suppose then that those armies of starlings I see on power lines every day are all getting their jollies from electric shocks? I submit they feel nothing at all.

At true story: Some years ago in another jurisdiction there was a problem with the deaths of a certain type of large bird (its name escapes me now). People were finding these birds dead on the ground under power poles and there seemed to be no rational explanation.

With some further investigation, it was revealed that these birds were getting shocked to death. It seemed that these poles were of the "T"-type, with a crossbar mounted at the top for the different power wires, and the birds were perching on the top of the pole. Since their wingspans were so long, the tips of their wings were touching wires on opposite sides of the crossbar, with fatal results.

The solution? An additional, smaller "T" was attached to the top of the power pole, with its crossbar placed high enough that the birds' wings would not reach down far enough to contact the wires.

You have probably heard that, if lightning strikes the ground near you, you should have your feet as close together as possible, or stand on one leg;>).

With super high voltages like one would encounter in lightning strikes, the soil serves as a voltage divider. The wider your stance the higher the impressed voltage across your goolies.

Now, if a bird ( not a lady) could spread its little legs wide enough on an uninsulated high voltage line, it might get its feathers ruffled.

Van de Graf generators can put hundreds of thousands or millions of volts of static electricity on a body, but unless the current finds a drain path, no 'shock' is noted.