Why nitrogen?

"Bertie the Bunyip" wrote in message
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"Capt. Geoffrey Thorpe" The Sea Hawk @See My Sig.com wrote in
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"Viperdoc" wrote in message
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Need to see the aging data on rubber kept in air versus nitrogen.


I've seen it at work, fwiw. Some difference.

But, for car tires, I would say there is more hype than benefit.


Used to put it in the tires of my light plane, mostly because it was
free.
I flew off grass and reckoned they'd rot before I wore them out anyway, so
I might as well get the most bang for the buck out of the tires.


Bertie

You're a cross posting dumb ass.

"Bertie the Bunyip" wrote in message
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"Peter Dohm" wrote in news:csYzk.30660$kh2.574
@bignews3.bellsouth.net:

"Bertie the Bunyip" wrote in message
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"Peter Dohm" wrote in
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"JGalban via AviationKB.com" u32749@uwe wrote in message
news:8a4950eac1beb@uwe...
Peter Dohm wrote:
The only difference that would make nitrogen seen really beneficial
to me would be in the case of an aircraft which is kept hangared
and
seldom operated. Then, if the tire threads last a number of years,
and the tires are sheltered from UV radiation, the inert nature of
the nitrogen could be usefull.


In theory, perhaps. In practice, tires oxidize from the outside
as
well
as
the inside. I've noticed that every time I've bought expensive,
long-life tires, they have to be chucked because the sidewalls are
rotting, even though
the tread is still good. It's not just air, but pollutants
(particularly in
the cities). Ozone, a common urban pollutant, is particularly bad
for tires.

John Galban=====N4BQ (PA28-180)

Ordinarily, I would just let this slide; but since the greenies have
decided that CO2 (which is nature's means of recycling oxygen) and
O3
(which is nature's cleanser of the atmosphere) are "pollutants"
according to the strange reasoning of their adled brains,



Here is an explanation for you.


If you find it too difficult to understand I'll have a look around
for
the Litle Golden Book of Wonder version for you.



http://earthguide.ucsd.edu/globalcha...arming/03.html



Bertie

You are too kind!

BTW, it did make a good case for the expansion of nuclear power--which
I
have long favored.


No, it didn't.

Maybe if I find something with pictures for you.



Bertie




You're a cross posting dumb ass.

"Bertie the Bunyip" wrote in message
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"Peter Dohm" wrote in news:csYzk.30661$kh2.3884
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"Bertie the Bunyip" wrote in message
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"Peter Dohm" wrote in
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"Bertie the Bunyip" wrote in message
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"Viperdoc" wrote in
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So, the O2 fueled an already existing fire or caused it?


I suspect that pumping the oxygen into the system somehow started
the fi it probably is a new definition for the term "hot start"


Mm, nice.

You heard about this?

http://www.gadling.com/2007/12/16/qu...-fills-oxygen-
tan
ks- with-nitrogen/

Sounds worse than it was, but still....

Bertie

It appears that they were lucky and the oxygen was'nt needed; but it
does remind me of some of the speculation surrunding the Paine
Stewart
case. Two hypotheses around my local airport were that 1) the tank
was inadvertantly filled with nitrogen or 2) that someone misread
the
labeling on the regulator on/off handle--which is counterintuitively
labeled with "on" or "off" and arrows pointing which direction to
turn
the knob for the desired result. I don't recall whether the case
was
ever fully resolved; but a lot of pilots found a couple of areas
worthy of their maximum vigilance!

Moe likely was they passed out before they even realised they were in
trouble on that one. More easily done than I'd certainly expect.


Bertie

That was also suggested, and could well be the real answer.


Doesn't really matter. It's done and the only thing that matters is that
all the possibilities are looked at and equipment and training are
geared towards avoiding a repetition of the accident. Easier said than
done.


Bertie



You're a cross posting dumb ass.

"Bertie the Bunyip" wrote in message
...
"Mick" @_#`~#@.^net wrote in :


"Peter Dohm" wrote in message
. ..
"Rich Ahrens" wrote in message
. net...
on 9/16/2008 8:39 PM Peter Dohm said the following:
"Rich Ahrens" wrote in message
. net...
on 9/16/2008 6:31 PM Peter Dohm said the following:
Ordinarily, I would just let this slide; but since the greenies
have decided that CO2 (which is nature's means of recycling
oxygen) and O3 (which is nature's cleanser of the atmosphere) are
"pollutants" according to the strange reasoning of their adled
brains, I feel compelled to point out that I suggested that the
aircraft would be sheltered in a hangar--which would protect the
outsides of the tires from part of the damage. They still won't
last until the treads wear out, but it will help.
You're suggesting hangars are so airtight that CO2 and O3 are
somehow sealed away from the tires inside? The effect of O3 on
tires is not through increased UV or global warming. It's direct
chemical interaction with the polymer chains in the rubber
compounds.

Not at all. However, UV is supposedly a player in rubber
deterioration.

Via a separate mechanism. That's why tires are made and/or treated
with ozone protection additives.

There is not much you can do about O3, you'll just have to live
with it.

Bull****. Reduce the amount of hydrocarbon and nitrogen oxides
emitted by various sources and you reduce the amount of low-level
ozone produced by their interactions. I'm not talking about the
ozone layer here. I mean the air we're breathing at our level of the
atmosphere.

...and YOU are going to accomplish all of that for the good of your
tires in YOUR hangar...

WOW! I'm VERY impressed.



Yeah! Me too!


Enough to distract you from the ball of yarn you were chasing around the
floor?


Bertie


You're a cross posting dumb ass.

"Bertie the Bunyip" wrote in message
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"Mick" @_#`~#@.^net wrote in :


"Bertie the Bunyip" wrote in message
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John Godwin wrote in
news:Xns9B1BD7A3321FBAvSvcs@ 208.49.82.60:

"Peter Dohm" wrote in
:

In the case of light plane tires, I agree with you that really dry
air should work well enough to make the issue trivial. But, if
you need nitrogen for any other reason, it is the cheapest thing
that I know of in an L bottle or larger and using it in the tires
may be essentially free--because you may have to pay rental on the
tanks if they are not refilled at a prescribed interval.

My daughter is a Crew Chief on a C-130 Herc and said that Nitrogen
is used in the struts.


Your daughter smokes cigars?



Bertie

You're a dumb ass.






Nope.


Bertie

You're a cross posting dumb ass.

"Bertie the Bunyip" wrote in message
.. .
"Mick" @_#`~#@.^net wrote in :


"Mick" @_#`~#@.^net wrote in message
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"Bertie the Bunyip" wrote in message
.. .
"Mick" @_#`~#@.^net wrote in news:fUgAk.14183$Dj1.8609
@newsfe01.iad:


"Bertie the Bunyip" wrote in message
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"Mick" @_#`~#@.^net wrote in
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"Bertie the Bunyip" wrote in message
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"Mick" @_#`~#@.^net wrote in
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"Bertie the Bunyip" wrote in message
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Learn to read...


Bertie

Why you can't.



And you might learn to write.



Bertie

Why you can't.


Yeh. You really don't realise what you're saying here, do you,
illiterate boi?



Bertie

Why you don't?


And there it is again..


Good thing there's usually a picture on the mens room door or you'd
be
peeing in the transformer room, eh?


Zaaaaaaapppp!



Bertie


Why not you do.


And this my good friends, is how you keep a moron busy for 30 minutes.


aww, give me some credit Maxine. It's been months now.







bertie

You're a cross posting dumb ass.

"Bertie the Bunyip" wrote in message
...
"Mick" @_#`~#@.^net wrote in :


"Bertie the Bunyip" wrote in message
.. .

Aww, and now you cuttin and pasting your replies..



Bwawahwhhahwhahwhahwhahhwhahwhahwhahwhahwhhahwhahh wha!


Bertie

Learn to read.


I know how. Read many many books.



I didn't cut and paste anything. Just your head rattling
again.



Yeh, OK illiterate boi.


Bertie


You're a cross posting dumb ass.

On Sep 18, 5:01*pm, "Mick" @_#`~#@.^net wrote:
"Bertie the Bunyip" wrote in .com...



"Mick" @_#`~#@.^net wrote :

"Bertie the Bunyip" wrote in message
...

Aww, and now you cuttin and pasting your replies..

Bwawahwhhahwhahwhahwhahhwhahwhahwhahwhahwhhahwhahh wha!

Bertie

Learn to read.

I know how. Read many many books.

I didn't cut and paste anything. Just your head rattling
again.

Yeh, OK illiterate boi.

Bertie

You're a cross posting dumb ass.

feel better?

"Allen" wrote

I am sorry Jim, the O2 is for emergency use. The cabin is pressurized
from engine bleed air. The O2 masks drop from the ceiling at 14K' cabin
altitude just like the airliners.

Yep, that's what I thought.

Sorry you misunderstood me, and I misunderstood you.

This went back to the possibility of oxy causing the Payne Stewart crash,
when I replied it was not likely because that was believed to be a primary
pressurization problem.
--
Jim in NC

"Bertie the Bunyip" wrote in message
...

****y shot of your wife Butlipps, she's looked better.