English Forum Switzerland

English Forum Switzerland (https://www.englishforum.ch/forum.php)
-   Daily life (https://www.englishforum.ch/daily-life/)
-   -   Nitrogen in my Tires/Tyres (https://www.englishforum.ch/daily-life/291154-nitrogen-my-tires-tyres.html)

bowlie 05.04.2019 16:30

Nitrogen in my Tires/Tyres
 
My tire guys are recommending nitrogen in my tires vs compressed air.

Is this a hoax? They say I’ll have less pressure loss, better km/l, and less wear and tear.

I think they are smoking something but ....

At CHF8 per tyre the benefits have to be pretty significant.

Sandgrounder 05.04.2019 16:35

Re: Nitrogen in my Tires/Tyres
 
Seems it's a thing. Not sure whether there are any benefits to it but at least you know he's not pulling your chain...

https://www.popularmechanics.com/car...ogen-in-tires/

pilatus1 05.04.2019 16:41

Re: Nitrogen in my Tires/Tyres
 
A 78% mix seems to work just fine.

Ace1 05.04.2019 16:51

Re: Nitrogen in my Tires/Tyres
 
Yes, of course it will make your car at least 10% faster, especially if you use snake oil in the engine as well...

Seriously, the idea's been around for years, but even if the 'larger molecules will leak less' claim is true, all it will do is keep your tyres at the correct pressure for longer, nothing that regular checking won't achieve equally well.

In short, it's nonsense.

Zoona 05.04.2019 20:55

Re: Nitrogen in my Tires/Tyres
 
This has been around for years.

it can keep pressures more stable, but really only important if you are racing.
It can also reduce moisture buildup inside the tyre. But again - marginal gain...

If it is being offered for free, take it. If they want you to pay - forget it.

JagWaugh 05.04.2019 20:58

Re: Nitrogen in my Tires/Tyres
 
And what will you do when the pressure is low? Go back to the snake oil salesmen to get more Nitrogen?

It's a hoax. If it were a F1 car, sure.

venetian 05.04.2019 22:39

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by bowlie (Post 3058463)
My tire guys are recommending nitrogen in my tires vs compressed air.

pilatus1 made a good joke, but I think it's better to explain it... many people actually don't know that normal air is already composed by Nitrogen at 78%: https://en.wikipedia.org/wiki/Atmosphere_of_Earth

st2lemans 05.04.2019 22:51

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by Ace1 (Post 3058472)
even if the 'larger molecules will leak less' claim is true

It's not, as the other main constiuent of air is oxygen, air has on average larger molecules that pure nitrogen! :p

In any case, a serious racer would use hydrogen for minimal weight. ;)

Tom

venetian 05.04.2019 22:56

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by st2lemans (Post 3058548)
In any case, a serious racer would use hydrogen for minimal weight

With the risk of ignition and severe fire in case of an accident.


...:p

22 yards 05.04.2019 23:16

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by st2lemans (Post 3058548)
It's not, as the other main constiuent of air is oxygen, air has on average larger molecules that pure nitrogen! :p

In any case, a serious racer would use hydrogen for minimal weight. ;)

Tom

No -- not that it's really important for tyre inflation, oxygen molecules are heavier (molecular weight, 32) but smaller than nitrogen molecules (MW, 28), so the constituents of compressed air are on average smaller than pure nitrogen molecules (and almost none of the molecules found in air are larger than nitrogen molecules).

The exact diameter of molecules of oxygen and nitrogen is very difficult to measure, but can be calculated under various conditions. In all cases, N2 is reckoned to be larger than O2. Here are the diameters of each molecule in Angstroms (10^-10 m, i.e. ten-billionths of a metre), with the basis for calculation:

- gas viscosity
O2: 2.96
N2: 3.16

- van der Waal's interaction
O2: 2.90
N2: 3.14

- molecular refraction
O2: 2.34
N2: 2.40

I reckon a difference in molecular diameter of about two hundred-billionths of a metre isn't going to make a whole lot of difference to the leakage rate through a tyre valve or around the tyre rims...

k_and_e 05.04.2019 23:41

Re: Nitrogen in my Tires/Tyres
 
I'm using extra large, lightweight oxygen molecules for the tyres. Very happy with it.

John_H 06.04.2019 07:39

Re: Nitrogen in my Tires/Tyres
 

Today only 06.04.2019 08:57

Re: Nitrogen in my Tires/Tyres
 
I just got a set of green valve caps, far cheaper



....and people think i'm cool and have N in my tires :D:D

bowlie 06.04.2019 13:00

Re: Nitrogen in my Tires/Tyres
 
Thanks Guys,
That is exactly what I thought. Snake Oil!

22 yards 07.04.2019 14:43

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by John_H (Post 3058566)

I watched the whole video and really enjoyed it (especially the full-on Aussie accent and typically forthright style), but I'm a little unclear on the conclusion—does the guy like nitrogen in tyres, or not? :confused:

Karl 07.04.2019 14:53

Re: Nitrogen in my Tires/Tyres
 
The air we breathe is already 78% nitrogen. Sounds like scam to me.

k_and_e 07.04.2019 14:58

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by Karl (Post 3058776)
The air we breathe is already 78% nitrogen. Sounds like scam to me.

Probably more like an over the top feature.

Quote:

Formula 1 tyres are normally filled with a special, nitrogen-rich air mixture, designed to minimise variations in tyre pressure with temperature. The mixture also retains the pressure longer than normal air would.
From: https://www.formula1.com/en/champion...ing/Tyres.html

Question is what kind of a difference this would make in a normal car, which doesn't have the tyres changed twice per hour and is rarely or never driven on the limit.

fatmanfilms 07.04.2019 15:07

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by k_and_e (Post 3058778)
Probably more like an over the top feature.


From: https://www.formula1.com/en/champion...ing/Tyres.html

Question is what kind of a difference this would make in a normal car, which doesn't have the tyres changed twice per hour and is rarely or never driven on the limit.

Virtually nothing, you might want to watch the video posted earlier for the exact answers.

FlyingScot 13.04.2019 18:21

Re: Nitrogen in my Tires/Tyres
 
Nitrogen is used in aeroplane tyres as the water in normal O2 tends to freeze due to sustained low temperatures at altitude. It's used in race cars for the opposite reason....vaporising due to high temperatures.

People have been using normal air in car tyres for a very long time and it's been fine :-)

NotAllThere 13.04.2019 19:03

Re: Nitrogen in my Tires/Tyres
 
Quote:

Originally Posted by FlyingScot (Post 3060979)
Nitrogen is used in aeroplane tyres as the water in normal O2 tends to freeze due to sustained low temperatures at altitude. It's used in race cars for the opposite reason....vaporising due to high temperatures.

People have been using normal air in car tyres for a very long time and it's been fine :-)

Normal air and O2 are not exactly the same thing. O2 doesn't contain any water vapour :rolleyes:


Quote:

Originally Posted by k_and_e (Post 3058557)
I'm using extra large, lightweight oxygen molecules for the tyres. Very happy with it.

You mean Oxygen-11? But that would immediately decay to C-11, then to Boron, so probably not that practical.

FlyingScot 13.04.2019 19:08

Re: Nitrogen in my Tires/Tyres
 
[QUOTE=NotAllThere;3060990]Normal air and O2 are not exactly the same thing. O2 doesn't contain any water vapour :rolleyes:

.....yes you're quite right....posted in a hurry but I knew what I meant to say!:msntongue::msntongue:

robBob 10.06.2019 08:58

Re: Nitrogen in my Tires/Tyres
 
In the not so distant future, about 2024 to be more exact, it ain't going to matter what you want to put in your tires:
https://www.engadget.com/2019/06/04/...airless-tires/

:cool:


All times are GMT +2. The time now is 17:01.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.1.0