Technical Analysis: WRC Cars 2017

[NickRally]

Actually to add to my post above, the mud guards in front of the wheels are not part of the FIA requirements as far as I can see.

[Steve Boyd]

Actually to add to my post above, the mud guards in front of the wheels are not part of the FIA requirements as far as I can see.

I read the regulation to mean that mud flaps in front of the front wheels are optional but those shown on the drawing in front of the rear wheels are required. Either way you don't have them on tarmac so both configurations really need to be tested and the rest of the bodywork needs to be optimised to deliver the desired performance compromise between both.

[NickRally]

Looking at the image below, I can't see mud flaps in front of the rear wheels:

http://www.rallyitaliasardegna.com/w...HANNINEN-1.JPG

[itix]

Too much dampers and aero lately!
Saw this picture in one of Dimitris posts:


And it got me thinking. The Yaris has the radiators in-line with the intercooler first (also a massive intercooler) and the engine radiator second. It makes sense from a power perspective given that the colder and denser the air is, the more you can manage to squeeze into the engine. It does however channel warmer air through the radiator and could explain the cooling problems they had at warmer rallies. Do we know the other team's set up?

[dimviii]

Too much dampers and aero lately!
Saw this picture in one of Dimitris posts:

that's why I posted this photo,hadnt seen like this before.

[racerx1979]

Too much dampers and aero lately!
Saw this picture in one of Dimitris posts:


And it got me thinking. The Yaris has the radiators in-line with the intercooler first (also a massive intercooler) and the engine radiator second. It makes sense from a power perspective given that the colder and denser the air is, the more you can manage to squeeze into the engine. It does however channel warmer air through the radiator and could explain the cooling problems they had at warmer rallies. Do we know the other team's set up?

The Yaris has two radiators with the intercooler in the middle. The intercooler is not in front of the radiators. All three are on the same plane.

[itix]

The Yaris has two radiators with the intercooler in the middle. The intercooler is not in front of the radiators. All three are on the same plane.

That may be, but what would the end ones be then? There are no visible pipes going in or out. Behind is most definitely the main radiator as you can see the coolant pipes going in and out of it.

For me the black strips are just something to fix the radiators in place because it looks like double end tanks where the coolant pipes enter the radiator. That's why I thought the entire front was an intercooler. The side ones are too big to be oil and gearbox coolers in my opinion.

[dimviii]

The Yaris has two radiators with the intercooler in the middle. The intercooler is not in front of the radiators. All three are on the same plane.

we have to watch some better photos,the right one as we look the photo is definitely intercooler,just watch the pipe which comes from behind the engine where I suppose is the turbo.
for sure something different we ve seen till now,thats why I posted the photo.
Can we have some more photos closer to engine bay?

[racerx1979]

The right and left coolers have small inlets /outlets. Not large enough for an intercooler. The center end tank is sufficient for an intercooler. I'll try to find a better image.

[NickRally]

racerx1979 is right, the centre one has the right size pipe for an intercooler (interestingly it is an air-to-air one), while the hoses on the two radiators either side are the right size for the cooling system, which could have the two radiators working in parallel (most likely) or in series:




I went through my files and only found a similar image for one other car - the Citroen, which I took in Portugal: