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Discussion Starter · #1 ·
Re: [EVDL] Odd that it burned completely

Hi EVDL-
I have monitored the list for the last few years without much to say-kinda got "burned out" after my Porsche went up in flames in 2006.
Many of you remember the questions I asked at the time; It wasn't plugged in, had 17 Optima's with Rudman Regs, and it had been charged Saturday afternoon and left waiting to be driven on Sunday morning, which was Mother's Day. I was awakened by my daughter telling me there were gun shots...which turned out to be tires exploding. Once the fire was out, and cool enough to approach, the arson investigator showed me the place where it started, which was where my weakest battery was. The fire was so hot it melted aluminum and every bit of pot metal; there was nothing left that wasn't steel. Many possibilities were discussed at the time, here on the list, and with EV friends here in the North Bay, but no definite cause was ever really decided on. The only good thing was that it was outside, instead of inside the garage/shop, so the firefighters were able to save the shop. And the only good laugh was when the arson investigator asked me: "You said you are a pastor...is anybody at !
your church mad at you?" and I said: "All the time...but not this mad!"
Michael B
Date: Mon, 21 Mar 2011 23:18:53 -0600
From: Bill Dube <[email protected]>
Subject: [EVDL] Odd that it burned completely (Was:SRJC student's
Focus-conversion-EV burned to its metal frame)
I find it _very_ odd that the car burned so completely. The article
said that even all the tires burned and all that was left was scorched metal.

TS LiFePO4 cells burn more like a mattress or a couch or perhaps a
Duraflame log. Smoky and persistent, but not very spectacular (unlike
metal oxide Li-Ion cells can sometimes behave.) Thus, I can't picture
a TS LiFePO4 pack fire spreading to all the tires. Possible, but not
very likely at all.

As fanatical as some EV advocates are, there are anti-EV fanatics
that can get to the point of scary. Also, there are folks that are
angered by the success of others to the point where they do some very
crazy things. Thus, it is not inconceivable that some unbalanced
person purposefully torched the vehicle. This sort of thing happens.
It does not happen often, but all it takes is one nut with a match
and a gas can. It got national press, and that is precisely what
motivates some of these fire-bug types

Bill D.




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70 Posts
Discussion Starter · #2 ·
Re: [EVDL] Odd that it burned completely

Michael, sorry 'bout the Porsche. Do you happy to know what kind of
within-the-pack fusing you might have had? What was the maximum voltage
potential between fuses?
Thanks
Roger

Connected by DROID on Verizon Wireless

-----Original message-----
From: [email protected]
To: [email protected]
Sent: Wed, Mar 23, 2011 02:03:52 GMT+00:00
Subject: Re: [EVDL] Odd that it burned completely

Hi EVDL-
I have monitored the list for the last few years without much to say-kinda
got "burned out" after my Porsche went up in flames in 2006.
Many of you remember the questions I asked at the time; It wasn't plugged
in, had 17 Optima's with Rudman Regs, and it had been charged Saturday
afternoon and left waiting to be driven on Sunday morning, which was
Mother's Day. I was awakened by my daughter telling me there were gun
shots...which turned out to be tires exploding. Once the fire was out, and
cool enough to approach, the arson investigator showed me the place where it
started, which was where my weakest battery was. The fire was so hot it
melted aluminum and every bit of pot metal; there was nothing left that
wasn't steel. Many possibilities were discussed at the time, here on the
list, and with EV friends here in the North Bay, but no definite cause was
ever really decided on. The only good thing was that it was outside, instead
of inside the garage/shop, so the firefighters were able to save the shop.
And the only good laugh was when the arson investigator asked me: "You said
you are a pastor...is anybody at !
your church mad at you?" and I said: "All the time...but not this mad!"
Michael B
Date: Mon, 21 Mar 2011 23:18:53 -0600
From: Bill Dube <[email protected]>
Subject: [EVDL] Odd that it burned completely (Was:SRJC student's
Focus-conversion-EV burned to its metal frame)
I find it _very_ odd that the car burned so completely. The article
said that even all the tires burned and all that was left was scorched
metal.

TS LiFePO4 cells burn more like a mattress or a couch or perhaps a
Duraflame log. Smoky and persistent, but not very spectacular (unlike
metal oxide Li-Ion cells can sometimes behave.) Thus, I can't picture
a TS LiFePO4 pack fire spreading to all the tires. Possible, but not
very likely at all.

As fanatical as some EV advocates are, there are anti-EV fanatics
that can get to the point of scary. Also, there are folks that are
angered by the success of others to the point where they do some very
crazy things. Thus, it is not inconceivable that some unbalanced
person purposefully torched the vehicle. This sort of thing happens.
It does not happen often, but all it takes is one nut with a match
and a gas can. It got national press, and that is precisely what
motivates some of these fire-bug types

Bill D.




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