Mclaren MCL40

[SilviuAgo]

The crease in the leading edge of the vertical floorboard. Then behind the new slatted floor teeth set up

source:alamy

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And another great visual breakdown of the McLaren floor updates introduced at the BritishGP:

[pronopheus]

Didn't they run the macarena wing?

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Didn't they run the macarena wink?

Noup. They decided to postpone the test until next race where the schedule is to use entire FP1 to back to back comparison vs actual solution. Belgium will be a great opportunity cause the track layout, vs Hungaroring where the Macarena solution is not adding same impact.

[SilviuAgo]

McLaren’s latest update at the BritishGP, at first glance, it seems has simply copied Ferrari by horizontally splitting the floorboard inlet. In reality, the change goes further.



McLaren has completely removed the upper "teeth", leaving the upper section entirely open. The remaining teeth (highlighted below in yellow) are also much longer than Ferrari’s.
On the SF26, the floorboard’s main leading edge (in blue) is thicker, which naturally shortens the teeth.


The intermediate divider (highlighted in green) works like a slat on an aircraft wing, as explained by Scarbs.

[SilviuAgo]

More photos from Xavi and Albert to this upgraded part of MCL40:

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Didn't they run the macarena wing?

Found this if helps: McLaren had a distinct rear wing between FP1 and Sprint Qualifying.
Differences in the straight-mode activator and in the endplate:

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Tks tu Nicholas Carpentiers here's a labelled look inside the MCL40 and the key components that make it all (not always ) work.