| Re: [GMCnet] It's been asked, the cause of my GMC fire. [message #293757] |
Mon, 11 January 2016 23:52  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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Senior Member |
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Ernie. The Nebraska State Fire Marshal has equipment that detects hydrocarbons. Oil. Thus an accelerant on the floor. And to him there was no reason for an accelerant to be on the floor. Thus someone put it there. And to him. I was the only one that had a reason to do that. It's called insurance money. And I had told him that there was no way it could have been there. On the 5 hour drive home. I figured it out. Basicly. He found the hydrocarbons. The case as solved right then. So he stopped his investigation. Below is the e-mail that I sent State Farm. And the Fire Marshal. He was pissed about the e-mail below. And called me to tell me that.Bob Dunahugh
There was a roof A/C unit just back of the front seat. That unit was 12,000 BTU's. That type of unit is a rotary vain compressor. An had R-22, and just under 1 pt of oil in it. All under pressure. The Oil type should have been 3GS, or 4GS . The pressure in the soldered copper tubing in this unit are. At 80 degrees, the internal pressure will be at 143PSI. At 150 degrees it will be at 381 PSI. As the temp increases. The PSI will also increase. When that unit was outside on the roof. The temp wasn't high enough to melt the solder joints. When the roof A/C unit fell from the roof into the fire. The temp at the solder joints would have allowed the soldered joints to come apart. Thus allowing the hydrocarbons in the R-22, and oil to be forced out under vary high pressure in the area of the floor. Your lab should be able to confirm this oil type from what you said. Had lots of time going home to think about hydrocarbons. And where they are. And how they got on the floor. So I figured it out for YOU.Bob Dunahugh
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| Re: [GMCnet] It's been asked, the cause of my GMC fire. [message #293760 is a reply to message #293757] |
Tue, 12 January 2016 02:03  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Bob,
What do you think the Fire Marshal's reaction would have been if you had finished your email with "I hope the information above
helps with the investigation."
Regards,
Rob M.
The Pedantic Mechanic
-----Original Message-----
From: Bob Dunahugh
Ernie. The Nebraska State Fire Marshal has equipment that detects hydrocarbons. Oil. Thus an accelerant on the floor. And to him
there was no reason for an accelerant to be on the floor. Thus someone put it there. And to him. I was the only one that had a
reason to do that. It's called insurance money. And I had told him that there was no way it could have been there. On the 5 hour
drive home. I figured it out. Basicly. He found the hydrocarbons. The case as solved right then. So he stopped his investigation.
Below is the e-mail that I sent State Farm. And the Fire Marshal. He was pissed about the e-mail below. And called me to tell me
that.Bob Dunahugh
There was a roof A/C unit just back of the front seat. That unit was 12,000 BTU's. That type of unit is a rotary vain compressor.
An had R-22, and just under 1 pt of oil in it. All under pressure. The Oil type should have been 3GS, or 4GS . The pressure in the
soldered copper tubing in this unit are. At 80 degrees, the internal pressure will be at 143PSI. At 150 degrees it will be at 381
PSI. As the temp increases. The PSI will also increase. When that unit was outside on the roof. The temp wasn't high enough to melt
the solder joints. When the roof A/C unit fell from the roof into the fire. The temp at the solder joints would have allowed the
soldered joints to come apart. Thus allowing the hydrocarbons in the R-22, and oil to be forced out under vary high pressure in the
area of the floor. Your lab should be able to confirm this oil type from what you said. Had lots of time going home to think about
hydrocarbons. And where they are. And how they got on the floor. So I figured it out for YOU.Bob Dunahugh
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] It's been asked, the cause of my GMC fire. [message #293762 is a reply to message #293760] |
Tue, 12 January 2016 06:54 |
Jim Galbavy
Messages: 1443
Registered: August 2007
Karma: 7
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Senior Member |
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Rob, The time to be polite was over when the Fire Marshal jumped to an
EZ solution to the fire without taking in the whole scene and calling it
arson. I take it that he didn't know what he was looking at, IF he saw the discharged
roof A/C unit in the area of the fire.
I understand that there is a time, place and way to do things the
PC way but once accused of a criminal act without doing a complete investigation,
it is time for the gloves to come off. I've done it in the military and in
civilian life with TSA and Customs. If you know you are right and the local authority will
not listen, then it is time to take it to a higher level. Never "cop" to a crime
you never committed just 'cause it is convenient to someone else.
That's my rant for the day. 
jim galbavy
'73 x-CL ANNIE
Lake Mary, FL
[Updated on: Tue, 12 January 2016 07:04] Report message to a moderator |
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