Ferrari SF-25

[dialtone]

I think Ferrari has clearly found something worth good time on their sidepod surface.

The whole area of the inlet with the inwash fin, the mirror support wing that is upwashing under the mirror but downwashing on the support part, the interesting inlet shape from up top.

I think they are trying to get as much clean air on top of the sidepod to optimize the flow towards the back of the diffuser even further and that sidepod shape is a more refined version of the F1-75. Very interesting.

[KimiRai]

https://bsky.app/profile/carpentiersf1. ... kbbvkaq422

[bananapeel23]

There`s a rumor that the SF-25 adopted the same air intake opening near the Cobra winglet as the RB-20 car. It was not seen on the rendering and at the Fiorano test today coz of the low ambient temperatures. This could be true since there is a cooling opening back on the engine cover, meaning there`s a cooling optimization done even at this higher level of the sidepod, hence they ditched the S-duct cooling thus increasing the cooling airflow speed further down to the added airflow that is coming from the vertical part of the sidepod air intake ...

https://postimages.org/

Remember we had the same discussion last year in the exact same area. People thought the geometry placed there before it was replaced by the cobra winglet was an intake. It was proven false, and it will be proven false again.

I'm 99% sure the cobra winglet doesn't house an inlet.

[DJ Downforce]

I don't want to play "eyeball wind tunnel" but I believe you can see the space the aero guys have to work with now in the front suspension area.

This hopefully is feeding the undercut and front floor whilst maybe helping outwash tyre wake from the front.

I said yesterday I thought the overbite was longer, turns out they just moved the inlet back

[ltitus8900]

The more I study this car, the more it reminds me of the RB18/19. Before Red Bull started to slowly force the car in another direction. I think what Tondi was getting at when he mentioned that he and his team would deploy an aero solution that most of the teams have not figured out yet is essentially exactly what Newey deployed on the RB18 and 19. One that does not just use a strong sidepod undercut kick over the front of the diffuser to maximize extraction but merges well with the flow fields outboard to really power up the floor edge. This is also why I thought he was interested in Mercs solution.

I think that the SF-25's solution is a more aggressive and better interpretation of what Merc was trying to do. If someone understands better what I am trying to say next, please chime in.

Merc was essentially trying to do an aggressive sidepod undercut kick and maintain a powerful flow fields along the side of the sidepods to really work the floor edge well. The SF-25 seems to do a RB19 like sidepod kick but they designed the kick to be effective earlier, to give them more sidepod edge surface to support good floor edge performance.

Unlike the RB, they pulled the sidepods way back and used the wide wing to better manage the flows coming off the front and allow them to manage boundary layers with minimal lost. I think they are also using the vortices shedding off the roll hoop and the winglet next to the drivers (forgot the name) to support healthy flows down the top of the sidepods to maximize rear diffuser performance. Hopefully this, along with the suspension change will allow them to have a machine capable of being very usable under most conditions.

[nico5]

I could be wrong, but the wishbone angles for the SF-25 seem to have less "anti dive" than the SF-24.

If true that'd be an interesting development IMO since the McLaren seems to be going pretty hard the other way

I think it's just an aero choice rather than anti-dive. McL is clearly that low bc they want it to interact with the floor edge and lower wishbone

[f1316]

https://pbs.twimg.com/media/GkJaxvaWkAE ... name=large

https://pbs.twimg.com/media/GkJaxvXXMAA ... name=large

So interesting, thanks as ever. A few things to pick up/add on:

(1) there are at least three things you call out that are similar to the ‘22 car. I really think there were ideas that worked very well on that car but that no longer worked once the foundation was destabilised by the TD. It implies to me that they’re now confident enough again with the base car that these ideas can be explored again - I find this very encouraging
(2) The Race stated that the P shaped inlets are bigger - I think that’s wrong. The top part is deeper but the width is less (it’s narrower) - my guess is that the volume is essentially identical
(3) As predicted in the speculation thread, it’s been confirmed that the engine performance will be enhanced:

Gualteri expects there will be a small step in the engine usage severity this year compared to 2024. Greater aerodynamic performance will have an impact on how hard the engines have to work - but he's also suggested that within what teams are allowed to refine without changing the engine’s hardware, Ferrari has finally been able to extract a last bit of performance potential it may have missed in recent seasons.

https://www.the-race.com/formula-1/ferr ... e-learned/

[Vanja #66]

[bl4zar_]

https://pbs.twimg.com/media/GkOXYvCXgAA ... name=large

No one mentioning the big difference in the line attaching the upper side of the floor with the sidepod? It's pretty visible in this image, favoured by a reflection on the SF-25 on the black carbon fibre.

The SF-24 had a gentle line there, this year's car seems pretty aggressive in pushing air outwards instead.

[Vanja #66]

No one mentioning the big difference in the line attaching the upper side of the floor with the sidepod? It's pretty visible in this image, favoured by a reflection on the SF-25 on the black carbon fibre.

The SF-24 had a gentle line there, this year's car seems pretty aggressive in pushing air outwards instead.

Explained on the first image

[atanatizante]

A longer wheelbase, according to THE RACE :





Possible pull-road internals:





Lower upper back wishbone front suspension for both increase the anti-dive and to clean up the area in front of the sidepod air intake:





Inclined front suspension triangles will increase the tyre foodprint by almost 2cm due to the wider front axel, which is beneficial for better cornering and tyre race management





Supposedly they went to the RB20 horizontal radiator route with the new sidepod layout and air intake:

[sucof]

A longer wheelbase, according to THE RACE :


https://postimg.cc/kBWkjrsQ


Possible pull-road internals:


https://postimg.cc/t18kQJCY


Lower upper back wishbone front suspension for both increase the anti-dive and to clean up the area in front of the sidepod air intake:


https://postimg.cc/6TfPRVpc


Inclined front suspension triangles will increase the tyre foodprint by almost 2cm due to the wider front axel, which is beneficial for better cornering and tyre race management


https://postimages.org/


Supposedly they went to the RB20 horizontal radiator route with the new sidepod layout and air intake:


https://postimg.cc/cvh1bthB
https://postimg.cc/VrrYvG8K

Now this is what I call, fan fiction

[deadhead]

https://x.com/engdesigning/status/18925 ... 2n8am2mMAg

[Vanja #66]

[Holm86]