Color Me Annoyed

"Jay Honeck" wrote in message
news:C%Csj.31873$9j6.10065@attbi_s22...
Leak-free inner tubes??????? They make such a thing?

Well, okay -- not leak "free". "Leak slower" might be a better name.
Cutting edge 1929 technology!

All I know is this: Anything that means we have to fill the tires even
half as often will go a long ways toward enhancing my marriage.

Have you adopted the use of nitrogen for filling your tires?
--
Jim in NC

Morgans wrote:

Have you adopted the use of nitrogen for filling your tires?

Why, what does that do for you? Air is 78% N2, and 21% O2. The O2 is a
bigger molecule than N2, so I wouldn't expect to see any difference in
the leak down. The only benefit I am aware of relates to tire fires in
airplanes that go much higher and faster than our spam cans.

It would be an interesting science fair project for a suitably inclined
middle school student though!

"Ray Andraka" wrote

Why, what does that do for you? Air is 78% N2, and 21% O2. The O2 is a
bigger molecule than N2, so I wouldn't expect to see any difference in the
leak down. The only benefit I am aware of relates to tire fires in
airplanes that go much higher and faster than our spam cans.

It would be an interesting science fair project for a suitably inclined
middle school student though!

It is an increasingly common practice, and it does seem to leak more slowly.
Heat transfer is also helped.
It is even becoming more common with tire shops for cars.
--
Jim in NC

"Morgans" wrote in
:


"Ray Andraka" wrote

It is even becoming more common with tire shops for cars.

Wouldn't be the first time the auto industry has copied something from the
aviation industry for the sake of allowing people that are too stupid to
know any better to part with their money for something which is of
absolutely no benefit to them.

Let me guess, these shops also charge extra for a nitrogen fill too right?



--
Made in China.....A label used to warn of dangerous materials.

The Discovery Channel did a segment explaining why N2 is better. This page
has a link to the segment:

http://www.getnitrogen.org/

Basically, it leaks more slowly and preserves the rubber.

--
Best Regards,
Mike

http://photoshow.comcast.net/mikenoel


"Ray Andraka" wrote in message
...
Morgans wrote:

Have you adopted the use of nitrogen for filling your tires?

Why, what does that do for you? Air is 78% N2, and 21% O2. The O2 is a
bigger molecule than N2, so I wouldn't expect to see any difference in the
leak down. The only benefit I am aware of relates to tire fires in
airplanes that go much higher and faster than our spam cans.

It would be an interesting science fair project for a suitably inclined
middle school student though!

Mike Noel wrote:
The Discovery Channel did a segment explaining why N2 is better. This page
has a link to the segment:

http://www.getnitrogen.org/

Basically, it leaks more slowly and preserves the rubber.



OK, I'll buy the reducing the oxidation of the rubber on the inside.
Since I've never had to replace an aircraft tire or tube due to the
rubber breaking down, I don't think this is significant except maybe for
a hangar queen.

I don't buy the "leaks more slowly", not for an instant. Oh wait, it is
published on a website that is promoting use of nitrogen in tires. That
means it must be true, right? Silly me.

If the air loss is indeed due to the other gasses leaking out, then each
time I top off my tire, the N2 concentration inside the tire should
increase, since presumably the pressure lost was due mostly to the
oxygen molecules leaking out and my making up the difference with air
which is 78% nitrogen. Eventually, I'd have near pure nitrogen in my
tires just from replenishing the air each time the tire is low if I
followed this reasoning to an extreme.

I understand that in certain aircraft, the oxygen in tires can be a fire
hazard, which I think is where filling with nitrogen originated. For
our light aircraft though, this isn't a concern. No, I suspect most of
the nitrogen for tires hype is just another way to separate cash from a
wallet.

"Ray Andraka" wrote

I don't buy the "leaks more slowly", not for an instant. Oh wait, it is
published on a website that is promoting use of nitrogen in tires. That
means it must be true, right? Silly me.

Too bad you musta flunked high school chemistry. N2 is a bigger molecule
than O2.

It leaks more slowly. It is common knowledge, among those that have open
minds.
--
Jim in NC

On Mon, 18 Feb 2008 16:26:15 -0500, "Morgans"
wrote:


"Ray Andraka" wrote

I don't buy the "leaks more slowly", not for an instant. Oh wait, it is
published on a website that is promoting use of nitrogen in tires. That
means it must be true, right? Silly me.

Too bad you musta flunked high school chemistry. N2 is a bigger molecule
than O2.You sure about that?

Ah, no.
N2 = 2X 14 = 28 and O2 = 2 X 16 = 30. It ain't by much but O2 has
the larger molecule, but by a very small margin. One small enough to
be almost insignificant.
..
Jut do a search based on "The size of a nitrogen molecule compared to
Oxygen" and you will get a whole bunch of pages debunking the N2 in
tires claim.


It leaks more slowly. It is common knowledge, among those that have open
minds.
Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com