Like I said, just my guess.venkyhere wrote: ↑29 Dec 2025, 02:11We can'r really call the 'why' before we see the 'what', because there could be other reasons like lesser boost (only 500bhp peak unlike 800bhp before) resulting in lower charge air temps, whether a large or small sidepod is what's needed (which in turn is going to be defined by what methodology choice each team makes about how the coke bottle area is going to be kept 'protected' from front tyre wake) etc etc etc..there isn't one reason for such choices, its like 5-6 independent constraints together going to war with each other and the designers eventually arriving at the least hurtful compromise and then deciding the size/shapes of some 20 aspects of the car.
..
Discuss, please, it will be fun to make such 'predictions' before the cars are unveiled in Jan'26 and then we can find out how wrong we've been.![]()
ICE output being lower would only reduce the charge cooling capacity requirements wouldn't it. So it makes sense to me. But the main driver I see for such a decision is weight. I imagine the start of 2026 being similar to the start of 2022, everbody talking about weight and some teams not making the minimum. If you want a prediction mine would be that there'll be a increase of minimum weight ahead of the first race as a result of some serious lobbying from some teams. Wouldn't be surprised at all. Hence the guess for air-to-air intercoolers.
The main counterargument would be the cost of drag both in direct lap time but also indirectly in used energy. Added drag could be a very expensive competitive deficit. Surely it must be one of the main design priorites for the overall car when in straight-line mode to be low drag in absolute terms and highly efficient in drag/lift terms.
But for me I find it hard to quantify (guess-tify) the cost of any added volume from a air-to-air intercooler and its effect on drag.
-Frontal area might increase but it doesn't have to.
-Coefficient of drag might increase but it's not a given.
And as mentioned it might very well be a continuation of the 2022-25 train of thought that a certain sidepod volume might be prefered for flow manipulation purposes.
So I find the 2 arguments for air-to-air intercooling certain and the counterargument far less certain. Hence the guess for air-to-air over air-to-water.

