MotoGP 2015

[denill]

The Duke had GRUNT and the Suzuki wasn't too shabby either.

[Moise]

Yeah but different gases behave in different ways, that why they generally use nitrogen as it heats up less (due to tyre heat) so is more consistent pressure from hot to cold in service
Using a different gas that has different properties should maybe still be legal.
Air pressure increases as it heats up more so for simple atmosphere air than nitrogen I doubt there is anything in the rules, defining what temperature the pressure is measured at or what gas must be used. (but there may be)
There is of course multiple other ways to get heat into the rear tyre. Or he could just ballast the bike, or eat more pies. I am pretty sure the other riders feel his low weight is much more of an advantage than a hindrance.

All gases increase in pressure at the same rate with increasing temperature. Wouldn't make any difference what they put in the tyres.

Pedrosa was born 10 years too late, the bikes are just too heavy for small riders now.

[Shaun Harris]

All gases increase in pressure at the same rate with increasing temperature. Wouldn't make any difference what they put in the tyres.

Pedrosa was born 10 years too late, the bikes are just too heavy for small riders now.

Are you 100% sure, and do you call Oxygen and nitrogen a gas?"

[Drew]

Different gasses are different 'weights'. That 'weight' dictates how it reacts to temp and pressure.

To say they all do the same thing at certain temp is fucken retarded.

[FROSTY:Me]

All gases increase in pressure at the same rate with increasing temperature. Wouldn't make any difference what they put in the tyres.

Pedrosa was born 10 years too late, the bikes are just too heavy for small riders now.

HOLEY COW--bet you go tell ALL the airlines in the world.All the armed forces running aircraft this stunning fact.
You will be a millionaire on the royalties you'll get from the savings they make

[bogan]

He's probably just confusing Boyle's gas law with the idea gas law; which has "R is the ideal, or universal, gas constant, equal to the product of the Boltzmann constant and the Avogadro constant."

[husaberg]

All gases increase in pressure at the same rate with increasing temperature. Wouldn't make any difference what they put in the tyres.

Pedrosa was born 10 years too late, the bikes are just too heavy for small riders now.

You are correct but you need to account for the different mass.
Pressure
_______________ = constant
Temperature

Thus For a fixed mass of gas, at a constant volume, the pressure (p) is directly proportional to the absolute temperature (T)."
But you need to remember not all gasses have equal mass.Thus not all gases respond to heat the same for a given pressure.

Nitrogen is also used when tyres are exposed to extreme heating, because it doesn't heat as much when placed under pressure when compared to "atmospheric air".

Imagine the sudden load an airplane tyre experiences when landing. Some heavy trucks also use nitrogen to reduce tyre wear caused by having a heavy load causing excess tyre heating. Racers who use proper race tyres designed to operate at high temperature use nitrogen because nitrogen makes the tyre run cooler and last longer.

In fairness 80% of the air is nitrogen anyway.
But if the other bikes were using Nitrogen, Danni could have used Simple compressed air.


Gas Molecular weight

Helium 4.02
Nitrogen 28.02
Air 29
CO2 44.01

As Shaun said HRC know all this or have people that do.

[J.A.W.]

Nitrogen is also used when tyres are exposed to extreme heating, because it doesn't heat as much when placed under pressure when compared to "atmospheric air".

Imagine the sudden load an airplane tyre experiences when landing. Some heavy trucks also use nitrogen to reduce tyre wear caused by having a heavy load causing excess tyre heating. Racers who use proper race tyres designed to operate at high temperature use nitrogen because nitrogen makes the tyre run cooler and last longer.

In fairness 80% of the air is nitrogen

Air also contains water vapour, & reactive elements such as oxygen, so yeah, its SOP for a factory racing outfit to have only dry nitrogen in tyres..
Some may recall the dramas at Phillip Is. when Bridgestone did not pre-test on the newly ( & abrasively) re-surfaced track & M-M ended up being Black F'd
for exceeding the mandatory pit stop/tyre change lap limit in the GP, this after tyres had been failing - in less than race length - runs.

Hence the rigid rule application on minimum tyre pressure.. that the wee fella was on about..

I also note that Moto 2 have still not bested Simmo's fastest ever 250 GP lap around P.Is... from way back in the previous decade.. its time they were dropped..

[Autech]

Did someone say something?


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[Doppleganger]

Who heard the Miller V Hodgson grid interview

[carbonhed]

Seemed to be going well from the little I saw.

[J.A.W.]

Did someone say something?

About the bird, here's the sequence of incident shots, bird appears to lose it in this head-to-head..

http://motor.as.com/motor/2015/10/18...28_14451677150

[Shaun Harris]

Who heard the Miller V Hodgson grid interview

The one where jack said you are a wanker?

[Doppleganger]

The one where jack said you are a wanker?

Yep, TV gold right there.

[Autech]

Gotta love Miller, he's straight up and down and a bit of a cunny funt:

http://www.foxsports.com.au/motor-sp...-1227573123738