R36 - Nitrogen

[richdave]

wow, what a discussion. i'd bet my last couple of bucks that one one making the biggest difference to tyre pressures (and that causes the fluctuations seen) is good old water vapour. i'd even theorise that the drier the air you use, the less fluctuations you'll have.....

Smack on there buddy... now lets move on to Helium, Argon or some other miracle gas that will prevent aging and make replacing your brake pads a thing of the past...

[Rocket36]

I'll stick with science

LMAO!!! You're one funny guy! I love it... Keep it coming... PLEASE!!! Hahahahaha!!!

Science of Maverick = WIN!

[Maverick]

LMAO!!! You're one funny guy! I love it... Keep it coming... PLEASE!!! Hahahahaha!!!

Science of Maverick = WIN!

Rather than your pointless comments that don't add anything to the discussion how about posting some information that is relevant? If information that has been posted is incorrect why not correct it? Everything points towards nitrogen being the next slick 50 or brock polariser and everyone except for the few people that have been scamme... I mean have purchased the product seems to agree

[G-rig]

No point arguing with people that are never wrong Maverick.

[Transporter]

LMAO!!! You're one funny guy! I love it... Keep it coming... PLEASE!!! Hahahahaha!!!

Science of Maverick = WIN!

Just don't turn this into another off topic thread. Want to make jokes? There's a whole humour section!

[Lance B]

This has been proven to be false, I posted the science behind why earlier and if dry compressed air is used the "benefit" of nitrogen tyres weighing 2.5 grams less per tyre disappears. The only slight difference can come about from there being some additional moisture in the tyre if the tyre is not filled with dry compressed air but on the flipside seeing as the tyre is not removed, cleaned out and filled 100% with nitrogen I fail to see how nitrogen works any better

Well, it would still remove most and therefore have a difference. When you say slight moisture difference, I think you'll find that it is more than slight.

"N2, being a lighter molecule, diffuses out faster. Having less weight, it also improves handling as there is less rotating mass - but not by much. If we assume a tyre has a volume of about 24 litres and is at 2.5 atmospheres pressure, then the weight of dry air in it will be 72.5 grams. (with air at 80% relative hummidity, it will be about 71 g). Fill it with N2, and it will weigh 70 grams. So you save a whopping 2.5 grams out of maybe a total tyre weight of 10 kg. Olympic cyclists fill their tyres with He to save a few grams - but then a few grams means 0.01 second which might be the difference between a medal or not.

A gram or so of ice in the tyre may cause issues, providing you drive around corners at 300 km an hour within a few seconds of starting the car and before it has melted and evaporated.

As the tyre warms up, the air or nitrogen will expand. If the tyre is at 20 C and then warms up to 40 C, then the air or nitrogen will expand by 1-((273+(40-20))/273) = 0.07 or 7%. If the tyre is at 35 psi at 20 C, it will increase to 37.5 psi at 40 C. Filling with different gases will make no difference as they all expand the same amount if raised by the same amount. If anything, using a denser gas such as S8F will take longer to heat up due to the higher specific heat (amount of heat required) to take it from 20 to 40 C (or whatever) but then will stay warmer longer."



You have consumer organisations, government organisations, motoring organisations and various magazines and so forth all debunking Nitrogen.

You have tyre stores, nitrogen sellers and people who also promote slick 50 pushing Nitrogen with wild claims.

So, you're saying the very *same* people who promote Slick 50 also promote nitrogen? Err, I think not. Wild claims? Well some may quote wild claims, but the ones I see are quite moderate. Unfortunately, making a statement like you have is just trying to bias the discussion in order to try to discredit.

Each to their own but I'll stick with science and back the former group [/QUOTE]

As I say, when I checked the pressure differences between hot and cold for nitrogen fill and normal compressed air fill, the nitrogen fill did not alter pressures by as much. Generally, my findings were that the nitrogen was about 2psi lower difference to that of normal compressed air. Same general outside hot/cold air temp, same tyres, same car, same original starting pressure of the tyre.

[Lance B]

No point arguing with people that are never wrong Maverick.

You mean like you?

[Treza360]

So just to stir up the pot and get things moving again. I had my pressures "topped up" on Friday. In three months I'd lost at most half a PSI in each tyre. Ie. Basically sweet stuff all.
Cheers,
Trent

[Preen59]

Ahhh the thread that caused my bannage........

[G-rig]

So just to stir up the pot and get things moving again. I had my pressures "topped up" on Friday. In three months I'd lost at most half a PSI in each tyre. Ie. Basically sweet stuff all.
Cheers,
Trent

Glad it's worth the cost.