CMSMJ1 wrote:I do not know for sure - but I would say the cooling system uses more than a few litres and that is water rather than glycol.
I'm pretty sure I saw green fluid leaking out of a crashed F1 car's radiators a few years ago, so they may have changed that (I'm pretty sure it was a Mclaren). On the subject of "a few litres" I suppose it depends on your definition of "a few".
CMSMJ1 wrote:My race bike has 3 litres of water to cool a dinky 65bhp motor...I reckon that a 700+ bhp engine needs more than that under some decent pressure to get the heat away.
10% of the cooling on a 740bhp engine may well be similar to the sort of thing you're talking about - if you are willing to assume that we are cooling "74bhp worth of engine". The amount of coolant volume used isn't far from what I mentioned either.
CMSMJ1 wrote:It is not the worst idea but why not have the floor of the car or the top of the sidepods as the surface area.
I'd suggest the wing is better purely in terms of heat exchange because there are parts of the car behind that which we'd like to keep cool. My idea, on the other hand, dumps heat out of the back edge of the car. Also - the air hitting the wing in the first place won't have been worked as hard as the air going in the sidepods. It's likely to be more effective on the rear wing than on a body part for that reason. Whether you can transfer enough heat out of a relatively small surface area to make the system worthwhile is another question...
CMSMJ1 wrote:The plumbing, pumps and what not would make, in my opinon, the rearward biased location for it untenable.
My thinking here is that there's already pipework in the chassis for the gearbox cooling - maybe you could route the water to do this job too (not 100% sure of temps but gearbox oil is bound to be hotter than engine coolant, I recon). Yes, there would be more complexity, but since when were F1 teams bothered by that?
I don't think you'd have to change the coolant pump much. There may even be an optimisation that allows the source hot water to come from the back of the engine block itself - this would miss out a bit of work and also cause other work. I suppose it also depends on the direction the cooling system already pumps coolant - cool in the top, or cool in the bottom, etc.