Red Bull suspects McLaren and a few other teams of filling water into the tyres

[Farnborough]

That's true. Even if it is a closed system, wouldn't steam help transfer heat out of the carcass and into the rim more effectively, given the better thermal conductivity of steam?

Would even just a few centiliters of water send the tyre pressures through the roof?

It all depends on the amount of water. Elevated pressure increases boiling point, if you examine conditions and make it just right the water might not even boil at all. Pirelli dictates quite high tyre pressures

Agree that there's definitely scope to do something IF that was the aim.

As example, would GR tire last set in Belgium have benefit in carrying water ?

If scenario are considered, then a benefit may be appreciated as to why that could be useful.

[FittingMechanics]

That's true. Even if it is a closed system, wouldn't steam help transfer heat out of the carcass and into the rim more effectively, given the better thermal conductivity of steam?

Would even just a few centiliters of water send the tyre pressures through the roof?

It all depends on the amount of water. Elevated pressure increases boiling point, if you examine conditions and make it just right the water might not even boil at all. Pirelli dictates quite high tyre pressures

27 psi would mean boiling point of 118C
22 psi would mean boiling point 111C.

[Vanja #66]

27 psi would mean boiling point of 118C
22 psi would mean boiling point 111C.

Yes, that's minimal pressures in some cases. As tyre temp goes up in the race, so does the pressure. For C5-C3 tyres this is within their working window, while C2 and C1 need so much temeprature to work you need to find a way to heat them up and not down...

[FittingMechanics]

27 psi would mean boiling point of 118C
22 psi would mean boiling point 111C.

Yes, that's minimal pressures in some cases. As tyre temp goes up in the race, so does the pressure. For C5-C3 tyres this is within their working window, while C2 and C1 need so much temeprature to work you need to find a way to heat them up and not down...

I hope FIA find the cheaters and interviews engineers and mechanics to find out who used it. Make sure to ask about the bib (Red Bull) and the hole in the rim (McLaren) as well.

[Big Tea]

1 ltr of water = 1k x 4 tyres ?

It would have to be a spectacular advantage to be worth doing

[organic]

So the liquid inside evaporates taking in energy from the rubber that reduces risk of overheating, acting as a buffer. I could see how this would be useful.

But I wonder how much is behind the accusations? In my opinion, they are probably made with no hint of truth behind it but simply desperation

At the same point in 2021 red bull were pointing fingers at merc's rear wing which never actually went anywhere

[Mulman]

It does not sound odd to me. It could be the working principle like a heat pipe. Water evaporates from the tyre and condenses on the rim. It takes heat from the tyre to the rim. The heat pipe is an very effective heat transfer system. In race pace, long straights could work at its best. From the rim centrifugal force ejects even small droplets back to the tyre. Of course there could be drawbacks, but the principle is there.

[Watto]

Auto sport running with claims some teams were spotted with liquid inside the rims at Singapore

[SilviuAgo]

So some teams are injecting the tires before race start with a liquid to help cooling. Ok, let's say RB is right. What happen at the pitstops? If we have 1..2..3 pitstops per driver (so multiplied by 2 per team) what are Ferrari, Mercedes, McLaren doing each race? Injecting water before pit stop to play the trick?
And if so, nobody saw this for 20 races x 3..4..teams × 2 minimum pits per team?
This is looking hilarious!

[pantherxxx]

So some teams are injecting the tires before race start with a liquid to help cooling. Ok, let's say RB is right. What happen at the pitstops? If we have 1..2..3 pitstops per driver (so multiplied by 2 per team) what are Ferrari, Mercedes, McLaren doing each race? Injecting water before pit stop to play the trick?
And if so, nobody saw this for 20 races x 3..4..teams × 2 minimum pits per team?
This is looking hilarious!

I can easily see that they did it under the nose of the inspectors and nobody noticed. Some people don’t realize that many things can be done without being obvious. Just look at magicians like David Copperfield or Hans Klok. Considering that F1 has some of the smartest engineers in the world, they may have found a way to do this undetected. And the FIA is incompetent.

[Rikhart]

As this is coming from RBR we can confidently dismiss this as nonsense. Next.

As much nonsense as a mini drs rear wing, or less, would you say?

[FittingMechanics]

So some teams are injecting the tires before race start with a liquid to help cooling. Ok, let's say RB is right. What happen at the pitstops? If we have 1..2..3 pitstops per driver (so multiplied by 2 per team) what are Ferrari, Mercedes, McLaren doing each race? Injecting water before pit stop to play the trick?
And if so, nobody saw this for 20 races x 3..4..teams × 2 minimum pits per team?
This is looking hilarious!

I can easily see that they did it under the nose of the inspectors and nobody noticed. Some people don’t realize that many things can be done without being obvious. Just look at magicians like David Copperfield or Hans Klok. Considering that F1 has some of the smartest engineers in the world, they may have found a way to do this undetected. And the FIA is incompetent.

But the bib, no way that was used.

[hollus]

There use to be a rule against using change of state of fluids (so latent heat of evaporation) for cooling. Is it gone from the regs?

[piast9]

That claim is ridiculous. Teams are pumping up the tyres with dry nitrogen for years for better pressure stabilty over temperature range as desorbing water adsorbed on and absorbed in the rubber increases the pressure variations. And now they'd start filling them with water?

[Rikhart]

That claim is ridiculous. Teams are pumping up the tyres with dry nitrogen for years for better pressure stabilty over temperature range as desorbing water adsorbed on and absorbed in the rubber increases the pressure variations. And now they'd start filling them with water?

How is it ridiculous if Red Bull were doing it before it was banned?