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10-26-2012, 01:21 PM | #26 | |
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But production costs more than steel, so that Cruze will now cost as much as the Volt and the Volt will cost more than the ZR1 Corvette. Carbon fiber, the new "economy material".
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10-26-2012, 01:44 PM | #27 |
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10-27-2012, 10:53 PM | #28 | ||
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He would have gotten that fire out faster if he would have concentrated on the front of the car where the bulk of the fire was . |
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10-27-2012, 10:58 PM | #29 |
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10-28-2012, 09:04 AM | #30 |
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There was no way that was a magnesium transmission case. Not even close to enough energy release. Maybe the battery popped or something, I don't know, but definitely not a transmission case.
It's really, really hard to ignite a large block of magnesium in a normal fire. Powder, yes, like the flash bulb and road flares people are using as example, but not a solid chunk of mg. Not enough surface area, too much thermal conductance. Sheet metal, eh, maybe. I wouldn't worry about it though. If you're still in the car by the time the magnesium ignites you're already dead as a doornail. Last edited by sniper1rfa; 10-28-2012 at 09:13 PM. |
10-28-2012, 09:46 AM | #31 |
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GM already has a magnesium front crossmember in the C6 Z06. This didn't come out of nowhere...I bet they are refining a process they already have.
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10-28-2012, 10:10 AM | #32 |
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It's funny people think a large corporation like GM with talented chemists, physicists, and engineers wouldn't know the danger of Mg.
Lots of elements are dangerous, but correct mixture or combinations of elements can stabilize molecule structure. |
10-28-2012, 10:17 AM | #33 |
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The BMW's N52 engine uses a mag block (24% lighter than alu block). Haven't heard of any 330i's bursting into flames...
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10-28-2012, 12:33 PM | #34 |
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Well, these large corporations don't have a spotless record when it comes to safety especially when it cuts into profits. Our lives are just a variable in a profit equation for these corps.
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10-28-2012, 01:02 PM | #35 |
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Or people just think it is funny. Molecule structure is what you think people are worried about? More like reactivity I have a big hunk of magnesium alloy I want to try and burn someday.
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10-28-2012, 08:43 PM | #36 | |
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You people make it sound like GM is planing on building body panels out of C4 for ****'s sake. Magnesium has been used in consumer goods and automotive applications (not to mention aerospace since WWII) for decades. It takes a LOT to ignite magnesium, especially a large chunk of it. If you have a fire hot enough to autoignite a large piece of magnesium you're in trouble no matter what. What is used is likely an alloy of magnesium that has an increased autoignition temperature by design anyway. Hell, since 2006 GM has used a magnesium alloy for the engine cradle in Z06s and you don't hear about those spontaneously igniting and blowing a crater a mile deep in the earth. Last edited by skywaffles; 10-28-2012 at 08:49 PM. |
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10-28-2012, 09:02 PM | #37 | |
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10-30-2012, 01:35 AM | #38 |
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10-30-2012, 03:23 PM | #39 |
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Magnesium bodied GM vehicles used to transport molten lava will still combust at a lower % than parked Ferraris.
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10-30-2012, 03:26 PM | #40 |
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10-30-2012, 04:01 PM | #41 |
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They have been making magnesium transfer cases for trucks for years.
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10-31-2012, 08:16 AM | #42 |
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Both my chainsaws have mag cased engines. I run them very hard with no truoble at all.
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11-04-2012, 03:52 AM | #43 |
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many years ago....there was a regional warehouse for lawn boy in the area where i was living.....there was a fire that spread to the building where the lawn boy parts were stored
iirc, at that time, there was a product recall on various push style mowers that used Mg decks....so there were a LOT of these mg parts in the warehouse they caught fire and, of course, the local yokle FD didnt know to not use water on them and/or didnt really know what was burning they started by spraying down the roof of the building...which held a lot of the water....the roof colapsed and dumped a big slug of water on the fire and BOOM the cloud of smoke was HUGE and visible for miles it was a miracle that nobody was badly injured or killed as it totally flattened that whole corner of the industrilal park where the fire was |
11-04-2012, 09:05 AM | #44 |
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Exactly my point! This is why I have been insisting folks do the right thing by offloading their highly flammable late gen Z06s to me for pennies on the dollar. I will find a way to safely dispose of them.
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11-04-2012, 12:23 PM | #45 |
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Ah, magnesium. What that Mercedes was made of in the infamous grand prix crash that killed the record number of spectators and they couldn't stop the metal fire. Excellent choice.
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11-04-2012, 07:11 PM | #46 |
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Which is relevant to exactly nothing. Do you think there have been zero advancements made in materials science since 1955?
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11-04-2012, 07:44 PM | #47 |
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This thread makes me want to cry.
I don't want to live on this planet. |
11-05-2012, 11:31 AM | #48 |
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Next thing you know they will want to power vehicles by volitile and enegetic liquids stored in large vessels
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11-05-2012, 06:56 PM | #49 |
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Personally I think we'd all be safer with a boy carrying a red flag to alert others to our motorcar's presence. And disassemble the vehicle and hide it in a hedge upon seeing a horse so as to not startle the beast.
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11-06-2012, 06:41 AM | #50 | |
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Because natural laws are alterable at the whim of forum posters. |
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