godlameroso wrote: ↑31 Mar 2018, 03:38
They're using parts of the 2017 car like the transmission, rear and front suspension, and rear diffuser, the rest of the car is mostly Haas. The sidepods, bargeboards, sidepod endplates, front and rear wings are all Haas. Also the diffuser on the Haas is also on the Sauber and they're nowhere. Back to Williams, they should devote their energies to increasing the consistency of the diffuser, whether it means modifying flow structures up-stream or modifying the floor geometry. At this point they'd be faster with chasing consistent downforce than max downforce, the car has good potential, but they'll really make progress once they get a more compact gearbox, or figure out a way to package things more efficiently.
Haas use the 2018 Ferrari suspension, brake ducts, gearbox and engine as supplied by Ferrari. Wheelbase is also identical and matches the longer 2018 Ferrari.
Aero is reverse engineered by Dallara (who design and build the Haas cars) closely following in the tracks of the 2017 Ferrari with some minor evolution, no part is 100 identical because actual transfer of aero data is banned but the overall package is extremely similar, with a certain amount of lag time to Ferrari depending on how difficult it is copy different concepts (IE wings and bargeboards can be changed in season, but sidepods probably not).
Overall the VF-18 could be considered as a Dallara developed version of the 2018 Ferrari that hasn't evolved quite as far aerodynamically from the SF70H, nevertheless the Haas car is closer to the 2018 Ferrari than the 2017 Ferrari. I expect Sauber will follow this route in the future now they are part of the Ferrari family.
Williams meanwhile has gone for revolution and almost completely changed aero approach compared to previous cars, the designers and concepts involved have impressive pedigree but getting ideas to mesh correctly may not happen right away.
In this case parts of the aero don't appear to be working correctly with each other under pitch, and the nature of Formula 1 aerodynamics is such that when one component stops working with another everything else downstream is probably going to stop working too, adding up to significant loss of downforce.