Internal lift and down-force

[ringo]

You are ignoring a lot of things.

But even ignoring those there is a reaction on the body work, especially the renault and Mclaren KERS cooling ducts.
The force on the heat exchanger counters this slightly but not totally.

[MIKEY_!]

These what your looking for ringo?

[ringo]

No an illustration with colour.

[MIKEY_!]

Oh well hope they help anyway.

[MIKEY_!]

This one?

[ringo]

yep, this one.

Now the yellow section over the a arms is interesting. It has an aerodynamic shape to it.

[Dragonfly]

Is it the KERS (battery pack) cooling?

[hardingfv32]

Is the yellow a flow indication or body part?

Brian

[marekk]

Guys, that's easy: No downward nett accelearation of mass(flow), no lift.

[MIKEY_!]

Not on the RBR but take a look at the ones on the Renault.