Green Electric Cars

[Shawnee123]

That is actually useful trivia (not that I'm building a dirigible or anything, but it's one of those facts I just KNOW will come in handy someday.) I did not know that.

[TheMercenary]

Originally Posted by glatt

Useless trivia:

The skin of the Hindenburg is what actually caught fire. When it was burning enough that it ruptured, it released the hydrogen, and the hydrogen ignited at that point, way up high in the sky above the burning blimp shell.

The common belief that a hydrogen blimp was inherently dangerous because of what happened on the Hindenburg was disproved in the early 1990s when scientists reexamined what was known about that accident. If I recall correctly, it was some sort of coating on the skin that made it flammable. Hydrogen is actually less flammable than gasoline. 932F versus 536F

Thanks glatt. Very interesting. I didn't know that factoid. I will need to read some more about it.

[Undertoad]

I wonder if we can get some hydrogen powered cars on the road soon. Can you imagine the fireball after two of those babies run into each other?

Even better, compress the hydrogen to 4000 psi.

[Bullitt]

Originally Posted by xoxoxoBruce

And after I leave the driveway?
Jesus fucking christ, 4350 psi! Have you any idea how dangerous that is?

Compressed air tanks for paintball guns can run in the 3000-4500psi range. Granted they are around 68 cubic inches, not 340 liters. Minor detail really.

[TheMercenary]

Originally Posted by Bullitt

Compressed air tanks for paintball guns can run in the 3000-4500psi range. Granted they are around 68 cubic inches, not 340 liters. Minor detail really.

I saw a video the other night of some kid who was killed when one of the paint ball canisters failed. A bit blew off and hit him in the neck.

[Bullitt]

Originally Posted by TheMercenary

I saw a video the other night of some kid who was killed when one of the paint ball canisters failed. A bit blew off and hit him in the neck.

Sounds like he may have had a faulty burst disc. It's a little piece of safety equipment installed on all compressed air and co2 tanks that is designed to fail when the pressure inside the tank becomes dangerously high, releasing the gasses from the tank quickly and preventing a hazardous over-pressurization. If that malfunctioned and did not fail as it was designed to, then some other part of the tank must have eventually succumbed to the over-pressurization and catastrophically failed, sending pieces of the metal or fiberglass tank flying at high speed no doubt.

Paintball is a very safe sport if safety guidelines are strictly adhered to. All you may end up with at the end of a hard day playing are some bruises/welts and minor scrapes from crawling and sliding around on the ground. When players and field operators/owners/refs neglect their safety equipment like facemasks, barrel blocking devices, gas system, etc., serious injuries, and in this case death, can and do occur. That said, this could have been entirely not the kid's fault. Could have been a cheap tank, not hydro-tested recently, or the fill station operator damaged/overfilled the tank placing this kid in harm's way. I will definitely encourage my future kids to play paintball. It's an exciting, physically demanding, team-building sport that is statistically safer than many other popular sports when safety standards are adhered to.

[lumberjim]

here's a green electric car:

[classicman]

yebbut what are those egg shaped things in the background?

[sugarpop]

Originally Posted by xoxoxoBruce

And after I leave the driveway?
Jesus fucking christ, 4350 psi! Have you any idea how dangerous that is?

I have no idea what it even means. I am stupid about the mechanics of cars. Explain to me please why it is dangrous. Thank you.

[sugarpop]

I watched this show on NOVA last night about the cars of the future. It was very interesting. http://www.pbs.org/wgbh/nova/car/

[Shawnee123]

Originally Posted by classicman

yebbut what are those egg shaped things in the background?

Pods, classic. We call them pods. Watch out for Pod People.

[classicman]

You're one of them aren't you ... that explains so much.

[TheMercenary]

Originally Posted by sugarpop

I have no idea what it even means. I am stupid about the mechanics of cars. Explain to me please why it is dangrous. Thank you.

It is just a discussion about taking a potentially flamable glass and putting it into a container under great pressure. PSI = Pounds per square inch.

The pound per square inch or, more accurately, pound-force per square inch (symbol: psi or lbf/in² or lbf/in²) is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch:

1 psi (6.894757 kPa) : pascal (Pa) is the SI unit of pressure.

Gases or gases in a liquid phase which become pressurized are potentially more dangerous in that state than at atmospheric pressure.

[Shawnee123]

Originally Posted by classicman

You're one of them aren't you ... that explains so much.

Well just great. Now I have to kill you.

Ix-nay on the od-pay, assic-clay.

[sugarpop]

Originally Posted by TheMercenary

It is just a discussion about taking a potentially flamable glass and putting it into a container under great pressure. PSI = Pounds per square inch.



Gases or gases in a liquid phase which become pressurized are potentially more dangerous in that state than at atmospheric pressure.

Is compressed air a gas then?