[s-cars] RE: S-CAR-List digest, Vol 1 #4 - 16 msgs
Paul Krasusky
KrasuskyP at FirstInterBank.com
Mon Apr 29 10:21:22 EDT 2002
Taka-
You car is looking MIGHTY fine. Kudos.
-Paul
CT
'95 //S6
-----Original Message-----
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Subject: S-CAR-List digest, Vol 1 #4 - 16 msgs
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Today's Topics:
1. Re: Nitrogen in tires? (Charlie Smith)
2. Re: Nitrogen in tires? (ccohen5)
3. Re: Nitrogen in tires? (Robert Myers)
4. RE: Nitrogen in tires? (Bruce Bell)
5. RE: Nitrogen in tires? (mlp)
6. Dunlop FM901 (Steve Marinello)
7. Re: RE: R&R plugs, was Boost Dropoff & Check Engine Light (KBATTPO)
8. Finally the taillights are in! (TM)
9. MIME message (Steve Marinello)
10. test-disregard (Steve Marinello)
11. Brake Pad Warning Light, Permanent Termination (UrS492 at aol.com)
12. Lehmann chips (Karen Trivett)
13. Re: RE: R&R plugs, was Boost Dropoff & Check Engine Light (Frank
Amoroso)
14. Re:s-car-list,congratulations (jcass)
15. Virus Alert (root at localhost.audifans.com)
16. RE: Lehmann chips (TM)
--__--__--
Message: 1
From: Charlie Smith <charlie at elektro.cmhnet.org>
Subject: Re: [s-cars] Nitrogen in tires?
To: ccohen5 at compuserve.com
Date: Sun, 28 Apr 2002 12:41:25 -0400 (EDT)
Cc: s-car-list at audifans.com (Audi S Car List),
s-car-list at egroups.com (Audi S Car List)
Earlier, ccohen5 wrote:
>
> How does one get the stuff into the tires without mixing it with air. Or
is
> it acceptable to have a N concentration but not pure N except for those F1
> folks who probably fill their tires in a vacuum chamber??
Use of nitrogen in tires is a common practice with racers, because
tire pressure is critical for best handling. They carry a pressure
bottle, similar to an oxygen tank used with welders. To set up
something like this, you'll need a high pressure regulator just
like on a welding tank.
After installation, inflate the tire and deflate it once,
then inflate it again. That gets rid of most of the air.
With a race tire, the sidewalls are very thin and flexible,
so one can 'squish' the tire and get most of the air-nitrogen
out of it before the second filling. Since race tires leak
like crazy, subsequent fillings will have even less air in
them. Figure, this will greatly reduce the pressure change with
temperature change, and that's what's important.
Also figure - race tires are more sensitive to pressure being
exactly spot-on. Plus, the benefits of nitrogen allow the pressure
to be right even on the first lap before the tires are fully heated up.
- Charlie
--__--__--
Message: 2
Reply-To: "ccohen5" <ccohen5 at compuserve.com>
From: "ccohen5" <ccohen5 at compuserve.com>
To: "Charlie Smith" <charlie at elektro.cmhnet.org>
Cc: "Audi S Car List" <s-car-list at audifans.com>
Subject: Re: [s-cars] Nitrogen in tires?
Date: Sun, 28 Apr 2002 10:44:52 -0600
Thanks -
----- Original Message -----
From: "Charlie Smith" <charlie at elektro.cmhnet.org>
To: <ccohen5 at compuserve.com>
Cc: "Audi S Car List" <s-car-list at audifans.com>; "Audi S Car List"
<s-car-list at egroups.com>
Sent: Sunday, April 28, 2002 10:41 AM
Subject: Re: [s-cars] Nitrogen in tires?
|
| Earlier, ccohen5 wrote:
| >
| > How does one get the stuff into the tires without mixing it with air.
Or is
| > it acceptable to have a N concentration but not pure N except for those
F1
| > folks who probably fill their tires in a vacuum chamber??
|
| Use of nitrogen in tires is a common practice with racers, because
| tire pressure is critical for best handling. They carry a pressure
| bottle, similar to an oxygen tank used with welders. To set up
| something like this, you'll need a high pressure regulator just
| like on a welding tank.
|
| After installation, inflate the tire and deflate it once,
| then inflate it again. That gets rid of most of the air.
| With a race tire, the sidewalls are very thin and flexible,
| so one can 'squish' the tire and get most of the air-nitrogen
| out of it before the second filling. Since race tires leak
| like crazy, subsequent fillings will have even less air in
| them. Figure, this will greatly reduce the pressure change with
| temperature change, and that's what's important.
|
| Also figure - race tires are more sensitive to pressure being
| exactly spot-on. Plus, the benefits of nitrogen allow the pressure
| to be right even on the first lap before the tires are fully heated up.
|
| - Charlie
|
|
--__--__--
Message: 3
Date: Sun, 28 Apr 2002 13:01:28 -0400
To: Charlie Smith <charlie at elektro.cmhnet.org>,
ccohen5 at compuserve.com
From: Robert Myers <robert at s-cars.org>
Subject: Re: [s-cars] Nitrogen in tires?
Cc: s-car-list at audifans.com (Audi S Car List),
s-car-list at egroups.com (Audi S Car List)
At 12:41 PM 4/28/02, Charlie Smith wrote:
>Earlier, ccohen5 wrote:
> >
> > How does one get the stuff into the tires without mixing it with
> air. Or is
> > it acceptable to have a N concentration but not pure N except for those
F1
> > folks who probably fill their tires in a vacuum chamber??
>
>Use of nitrogen in tires is a common practice with racers, because
>tire pressure is critical for best handling. They carry a pressure
>bottle, similar to an oxygen tank used with welders. To set up
>something like this, you'll need a high pressure regulator just
>like on a welding tank.
>
>After installation, inflate the tire and deflate it once,
>then inflate it again. That gets rid of most of the air.
That would pretty much take care of it. Not 100% but well toward 100%
>With a race tire, the sidewalls are very thin and flexible,
>so one can 'squish' the tire and get most of the air-nitrogen
>out of it before the second filling. Since race tires leak
>like crazy, subsequent fillings will have even less air in
>them. Figure, this will greatly reduce the pressure change with
>temperature change, and that's what's important.
I'm sure you are correct about the practice, Charlie, but air (primarily a
mixture of 80% N2 & 20% O2) will obey exactly the same gas laws as will
"pure" N2. This makes no sense as an argument for using only N2 to inflate
the tires. Perhaps there is some valid reason for its use but this one
ain't it. Perhaps the convenience of using a bottle of gas rather than
having to schlep around a compressor might have something to do with it?
>Also figure - race tires are more sensitive to pressure being
>exactly spot-on. Plus, the benefits of nitrogen allow the pressure
>to be right even on the first lap before the tires are fully heated up.
Again, Charlie, the tire pressure will change essentially the same way on
heating whether air or N2 is used. This is a nonsense argument. I'm sure
you have heard it expressed this way but it's still nonsense.
> - Charlie
>
>
>
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>
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>
>
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Bob
*****
Robert L. Myers 304-574-2372
Rt. 4, Box 57, Fayetteville, WV 25840 USA WV tag Q SHIP
'95 urS6 Cashmere Grey - der Wunderwagen ICQ 22170244
http://www.cob-net.org/church/pvcob.htm
*****
--__--__--
Message: 4
Reply-To: <bbell at surview.com>
From: "Bruce Bell" <bbell at surview.com>
To: "Robert Myers" <robert at s-cars.org>,
"Charlie Smith" <charlie at elektro.cmhnet.org>,
<ccohen5 at compuserve.com>
Cc: "Audi S Car List" <s-car-list at audifans.com>
Subject: RE: [s-cars] Nitrogen in tires?
Date: Sun, 28 Apr 2002 11:32:47 -0600
It's the moisture content. Dry compressed air works, as RM says, nearly as
well. The F1 guys like to be spot on pressure.
Bruce
>Use of nitrogen in tires is a common practice with racers, because
>tire pressure is critical for best handling.
I'm sure you are correct about the practice, Charlie, but air (primarily a
mixture of 80% N2 & 20% O2) will obey exactly the same gas laws as will
"pure" N2.
>Also figure - race tires are more sensitive to pressure being
>exactly spot-on. Plus, the benefits of nitrogen allow the pressure
>to be right even on the first lap before the tires are fully heated up.
Again, Charlie, the tire pressure will change essentially the same way on
heating whether air or N2 is used. This is a nonsense argument. I'm sure
you have heard it expressed this way but it's still nonsense.
--__--__--
Message: 5
Date: Sun, 28 Apr 2002 12:50:20 -0600
From: "mlp" <mlped at qwest.net>
To: "Robert Myers" <robert at s-cars.org>,
"Charlie Smith" <charlie at elektro.cmhnet.org>, ccohen5 at compuserve.com
Cc: "Audi S Car List" <s-car-list at audifans.com>,
"Audi S Car List" <s-car-list at egroups.com>
Subject: RE: [s-cars] Nitrogen in tires?
How about something else, water as an excuse or reason for nitrogen?
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