Williams FW41 Mercedes

[Maritimer]

https://pbs.twimg.com/media/DX1oBDLWAAEZlBZ.jpg

https://imgr1.auto-motor-und-sport.de/S ... 152158.jpg

https://imgr2.auto-motor-und-sport.de/S ... 152183.jpg

Burnt bodywork again
https://imgr2.auto-motor-und-sport.de/S ... 152159.jpg

Via AMuS

Can any of you guys tell me please ?
What is the yellow thing on the front wing photo ?

It looks a bit line a ribbon of some sort.

Thanks

It's a cover for the front tire cameras I do believe

[Webber2011]

https://pbs.twimg.com/media/DX1oBDLWAAEZlBZ.jpg

https://imgr1.auto-motor-und-sport.de/S ... 152158.jpg

https://imgr2.auto-motor-und-sport.de/S ... 152183.jpg

Burnt bodywork again
https://imgr2.auto-motor-und-sport.de/S ... 152159.jpg

Via AMuS

Can any of you guys tell me please ?
What is the yellow thing on the front wing photo ?

It looks a bit line a ribbon of some sort.

Thanks

It's a cover for the front tire cameras I do believe

Thanks mate

[PlatinumZealot]

New nose is more "V" shaped underneath.

[bill shoe]

Ferrari, Caterham and now Williams have done this now. Red, Green and White are the three heaviest paint colours, according to what i remember i read in 2014. Greyscale, Black and shades of yellow/orange are the lightest with blues being mid weight. Caterham saved 14kg on their car by swiping to a vinyl wrap, and Ferrari saved about 8Kg as paint can add up to 25Kg on some cars.

Paint/wrap weight is important but I'm skeptical an F1 paint job weighs up to 25 kg or 55 lbs! This is several gallons of paint! Any source or other indication the paint weights this much?

[DiogoBrand]

There's always talk of teams saving weight when switching paintjobs, but I'd eat my own trousers if an F1 paintjob weighs 25Kg. Doing a quick research I found out that a regular car paintjob weighs about 4Kg. So considering that weight saving is much more important in F1 than in road cars, if a paint job was more than 4Kg I'd be surprised. When even your drivers need to lose weight to reach the minimum weight rules, if you had to waste 25Kg to make the car pretty, you'd be way better off just leaving the car on naked CF.

[DiogoBrand]

From this link:
https://www.mclaren.com/formula1/partne ... t-numbers/

"Given that there’s more than eight square metres of paint (in numerous coats) on every car, weight savings are considerable. This is largely achieved by making each layer thinner, yet still making it work effectively – for example, the anthracite grey base coat is only 34 microns thick (0.03mm), and the double coat of laquer is just 56 microns thick."

Considering that there are 8 square meters, and the added thickness combines to 90 microns (34 from the base coat and 56 from the laquer), you get an end result of 0,72 liters of dried paint. If that got even close to 25Kg they could just use paint for ballast.

[RZS10]

>25kg of paint on an F1 car

the paint on your average road car is roughly 100 μm /0.1mm thick

The paintable surface on an F1 car is what? maybe 10 m²

dried paint is >1g/cm³ (a quick search gave me 1.18 g/cm³ in a brillux paint spec sheet)

so 25 kg of paint would be 21186 cm³

This would be 21 liters (packs of milk) of dried paint ... on an F1 car.

The paint on the car would be 2mm thick (x20 compared to road car)

edit: i see diogo posted some good info whilst i was typing this ... in the video at 0:28 he mentions ~2kg of paint

[Francesc]

Cooling emergency opening exit like the McLaren

[tomazy]

This is not an cooling emergency opening but it does something to doo with Mercedes PU. All the mercedes powered cars have a slot in aproximatly this position, had it there allso last year (maybe even longer). I didn't find any good pics like this of the FW41, but here is Force India, look in the tip of the pink triangle on the engine cower below W:


And Mercedes, look in the second 4:


FW40, above N on the red part of the Martini stripe:

[Sevach]

FW 40 Abu Dhabi vs FW 41 test spec.

[Sevach]

[Sevach]

[ScrewCaptain27]

Via AMuS

[LuisFeF1]

IIn the second week of testing in Barcelona Williams added two vertical fins in the central part of the diffuser

[DinkLv]

IIn the second week of testing in Barcelona Williams added two vertical fins in the central part of the diffuser

https://farm5.staticflickr.com/4794/270 ... 3897_b.jpg

It seems like the surface flow tends to go from the ridge to both sides when approaching the trailing edge. Maybe it's because the higher you raise the trailing edge, the lower Cp you have on the surface and thus will induce the air to the low Cp area. As a result you need to add the fins to prevent air seperating from the edge and form unpredictable vortices.