Tire inflation with Nitrogen or ?

Ahhh. The Internet. Is there nothing it can't teach us?
So it looks like at 100% propane at 20 deg F. will turn it into liquid.
It probably wouldn't get to 100% though since there's always going to be
some air in the tire.
Thanks for the info. It looks like I was told some wrong stuff on how
it reacts. The person said it would partially become liquid if put in a
toy balloon.

Thanks for clearing that up Vaughn

Vaughn Simon wrote:

You could indeed have a problem below zero temperatures, but at normal room
temperatures the propane would remain a gas. See the right side of this
diagram: http://www.elyenergy.com/pdf/CO26.pdf

Vaughn

Drew Dalgleish wrote:
At work I run a large front end loader. About a year ago the company
switched from air filled to nitrogen filled at the recommendation of
the tire supplier. Used to be at the end of an 8 hour shift the tires
would be hot to touch or too hot to touch. Now they're just pleasantly
warm. Good for leaning on while waiting for a ride. I don't know if
argon would be any good or not.

Let us know how hot your light aircraft tires are after taxiing for 8
hours. 8*)

Tire get hot from flexing. Many a trucker has burned his load after a
tire with low pressure got to hot. Could it be that they were running
more pressure with the nitrogen than they were with the compressed air?

Maxwell wrote:


How Stuff Works

Why don’t they use normal air in race car tires?

http://auto.howstuffworks.com/question594.htm



How Stuff Works

How NASCAR Race Cars Work

http://auto.howstuffworks.com/nascar5.htm



Let's us know how you do in the "Airport Taxi 500".

Most of us taxi on a few miles on each flight, and that at only a "fast
walk" speed, though some of us cheat and make it a slow jog.

"Ernest Christley" wrote in message
...
Maxwell wrote:


How Stuff Works

Why don’t they use normal air in race car tires?

http://auto.howstuffworks.com/question594.htm



How Stuff Works

How NASCAR Race Cars Work

http://auto.howstuffworks.com/nascar5.htm



Let's us know how you do in the "Airport Taxi 500".

Most of us taxi on a few miles on each flight, and that at only a "fast
walk" speed, though some of us cheat and make it a slow jog.

Grin. I'd really like to run the Taxi 500, but then I would have to give up
lawnmower racing. I just simply afford to do both.

On Sun, 15 Apr 2007 01:20:16 -0400, Ernest Christley
wrote:

Drew Dalgleish wrote:
At work I run a large front end loader. About a year ago the company
switched from air filled to nitrogen filled at the recommendation of
the tire supplier. Used to be at the end of an 8 hour shift the tires
would be hot to touch or too hot to touch. Now they're just pleasantly
warm. Good for leaning on while waiting for a ride. I don't know if
argon would be any good or not.

Let us know how hot your light aircraft tires are after taxiing for 8
hours. 8*)

Tire get hot from flexing. Many a trucker has burned his load after a
tire with low pressure got to hot. Could it be that they were running
more pressure with the nitrogen than they were with the compressed air?

Welll I don't plan on taxiing for 8 hours or to fill with nitrogen so
there isn't going to be a report.

Tire pressure is checked daily and hasn't been changed. Heavy
equipment tires are expensive ( $5000-20000 for the ones we use ) and
there's now up to a 6 month waiting period for new ones. They take
tire care seriously where I work.

OK. I sent an email to Michelin technical dept asking about using
Argon. They essentially replied "we don't recommend it because we did
not test it" or simply translated "we don't know".

On Apr 11, 11:59 am, wrote:
Michelin recomends inflating tires with nitrogen. What about Argon? I
got a bottle of argon I use in Mig welding aluminum. Isn't argon
better than Nitrogen? What about the common 75% Argon and 25% CO2
welding mixture?

On Apr 11, 11:59 am, wrote:
Michelin recomends inflating tires with nitrogen. What about Argon? I
got a bottle of argon I use in Mig welding aluminum. Isn't argon
better than Nitrogen? What about the common 75% Argon and 25% CO2
welding mixture?

wrote in message
oups.com...
OK. I sent an email to Michelin technical dept asking about using
Argon. They essentially replied "we don't recommend it because we did
not test it" or simply translated "we don't know".

Thanks for the update. I was just about curious enough to give them a call.

Personally, if it was mine and was a Cessna 152 without wheel pants, I would
probably try it.

But a lot depends upon the cost of a tire failure, the inconvenience of
maintenance, and the cost of the smallest bottle of N2--the smallest bottles
are pretty small.

OTOH, if I had the right components lying around, it would be hard for meto
resist comparing the leakage rate on a spare wheel and tire--or the trusty
old hand truck with the pneumatic tires. At least, that might give a
comparison to dry air. :-)

Peter

Nitrogen has other uses. Since it won't hold water I have used it to
dry out electrical connectors, get rid of the itch inside a cast, fill a
solar panel etc.

Dan, U.S. Air Force, retired

During my few years maintaining aircraft, most nitrogen uses called for
"dry" nitrogen. It can have moisture included. Hydraulic accumulators and
co2 fire extinguishers needed dry nitrogen or dry air. Many air compressors
used around aircraft had silica gel dryer cartridges in-line, and were
generally accepted as OK when dry nitrogen was not available. IIRC nitrogen
in tires was standard in the YF-12, SR-71 and some F-104's being used in
test programs.
Old Chief Lynn

Lynn Coffelt wrote:
Nitrogen has other uses. Since it won't hold water I have used it to
dry out electrical connectors, get rid of the itch inside a cast, fill a
solar panel etc.

Dan, U.S. Air Force, retired

During my few years maintaining aircraft, most nitrogen uses called for
"dry" nitrogen. It can have moisture included. Hydraulic accumulators and
co2 fire extinguishers needed dry nitrogen or dry air. Many air compressors
used around aircraft had silica gel dryer cartridges in-line, and were
generally accepted as OK when dry nitrogen was not available. IIRC nitrogen
in tires was standard in the YF-12, SR-71 and some F-104's being used in
test programs.
Old Chief Lynn




The geniuses at Rockwell designed the T-39 with bolt on wings. This
meant the 6 (3 per side) fuel quantity pip connectors were in the wheel
wells. Instead of using water proof connectors they used standard pip
connectors that had no seals. We had to periodically blow them out with
nitrogen and re-wrap them in F-4 tape. I will refrain from using the
language here that I used when working on those [expletive deleted]
airplanes.

As an aside I love those pip connectors. They used to be made by
Dage. I have no idea who makes 'em now. I sure would like to find out
since I need some.

Dan, U.S. Air Force, retired

The geniuses at Rockwell designed the T-39 with bolt on wings. This
meant the 6 (3 per side) fuel quantity pip connectors were in the wheel
wells. Instead of using water proof connectors they used standard pip
connectors that had no seals. We had to periodically blow them out with
nitrogen and re-wrap them in F-4 tape. I will refrain from using the
language here that I used when working on those [expletive deleted]
airplanes.

As an aside I love those pip connectors. They used to be made by
Dage. I have no idea who makes 'em now. I sure would like to find out
since I need some.

Dan, U.S. Air Force, retired

I think the T-39 wing was basically a rehashed F-86 wing. The F-86 wing
we
took off and reinstalled (to gain access to the fuselage main tank) was a
real challenge to us green behind the ears greasemonkeys. We showed our
chief inspector the parts we had left over.......... After a "one-time"
flight
back home, he made us do it over, and not have any parts left over.
I served my time hammering on several F-4 models, but I just never
heard
of "F-4 tape", so I had to Google it up, and I'm not sure I ever used any on
F-4's
but I recognized the "Googled" description and think it was the stuff we
used
a lot around the T-38's at Edwards.
Old Chief Lynn