2026 Aerodynamic & Chassis Regulations

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mzso
mzso
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Re: 2026 Aerodynamic & Chassis Regulations

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Tommy Cookers wrote:
15 Jun 2024, 13:00
mzso wrote:
15 Jun 2024, 12:35
.... hybridization is unquestionably better for fuel economy and such "the environment".
Also full electrification would be even better. Even if you just end up burning the same fossil fuels with large very efficient power-plants......
how are those things true ?
(given that we have now an ICE of 50% even 52% efficiency)

''large very efficient power-plants' are only so if combined cycle (ICE & steam) - which most aren't for good reasons
and carry substantial losses eg 8-10% in grid & network transmission plus 10-12% battery charge/discharge cycle

the attraction of the hybrid and EV is their batteries bolstering against intermittency of the public electricity supply
Well, not that I don't think the transmission and (dis)charge losses can be improved:
  • Refining fossil fuel wastes a crapload of energy, which is conveniently forgotten when comparing efficiencies.
  • You can use the "waste" heat, for heating purposes. With an ICE you can only use a small fraction for heating the car in the winter.
  • You say ICE, if you don't mean it to be hybrid then it can't regenerate any energy when braking, unlike EVs.
  • No pollution of the air that you breathe. Powerplants can be at some distance with the pollutants filtered.
But all in all, it's true, electric is even a lot better if you generate power by a less wretched way. Such as nuclear, hydro, or solar.

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jjn9128
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Re: 2026 Aerodynamic & Chassis Regulations

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Y'all go to the powertrain thread with your MGU sh!t, this is a safe space for chassis nerds :lol:
#aerogandalf
"There is one big friend. It is downforce. And once you have this it’s a big mate and it’s helping a lot." Robert Kubica

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FW17
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Re: 2026 Aerodynamic & Chassis Regulations

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Does a tunnel (running from the middle of the floor) and diffuser (starting 300 mm in front of rear wheel axel) of both 175mm high produce produce same downforce?

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jjn9128
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Re: 2026 Aerodynamic & Chassis Regulations

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FW17 wrote:
17 Jun 2024, 08:37
Does a tunnel (running from the middle of the floor) and diffuser (starting 300 mm in front of rear wheel axel) of both 175mm high produce produce same downforce?
Depends what the regs are - a lot of performance in the current regs comes from the massive VGs at the tunnel inlet. A flat floor can produce a lot of downforce though, that said, I'm not sure the FIA want a lot of downforce with these regs. We'll have to wait and see what the text is in a few weeks.
#aerogandalf
"There is one big friend. It is downforce. And once you have this it’s a big mate and it’s helping a lot." Robert Kubica

AR3-GP
AR3-GP
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Re: 2026 Aerodynamic & Chassis Regulations

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Reduction of downforce levels is a key element of good racing.
A lion must kill its prey.

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FW17
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Re: 2026 Aerodynamic & Chassis Regulations

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jjn9128 wrote:
17 Jun 2024, 20:25
FW17 wrote:
17 Jun 2024, 08:37
Does a tunnel (running from the middle of the floor) and diffuser (starting 300 mm in front of rear wheel axel) of both 175mm high produce produce same downforce?
Depends what the regs are - a lot of performance in the current regs comes from the massive VGs at the tunnel inlet. A flat floor can produce a lot of downforce though, that said, I'm not sure the FIA want a lot of downforce with these regs. We'll have to wait and see what the text is in a few weeks.

Consider this as the front of the floor

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mzso
mzso
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Re: 2026 Aerodynamic & Chassis Regulations

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Vanja #66 wrote:
15 Jun 2024, 14:02
mzso wrote:
15 Jun 2024, 12:20
You lost me here. You say "these are" the main cause then you say they are significantly weaker and break up. I think something is missing. What is weaker than what?
And what are venturi tunnels contrary to then?

Do the 2026 reg do away with the fences? What was the point of them anyway, it if just causes vortices and entailing problems?
You say "diffuser vortex which is unavoidable without side skirts." But don't you mean the floor edge vortex? Seems more logical.
Isn't the diffuser vortex which happens as the air leaves the diffuser at the very rear?
It might be best to answer this part later today, when I'm back at my computer, it's hard to find all the images online and post them in a coherent matter from phone :mrgreen:
Okay, so what did you mean?

Luscion
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Re: 2026 Aerodynamic & Chassis Regulations

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mzso
mzso
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Re: 2026 Aerodynamic & Chassis Regulations

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JordanMugen
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Joined: 17 Oct 2018, 13:36

Re: 2026 Aerodynamic & Chassis Regulations

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If the very short diffuser and no beam wing is accurate, it seems the FIA are very determined to reduce downforce!

But isn't underfloor downforce relatively not draggy?

If Stella's complaints of low corner speeds are to be addressed, while keeping low drag concept of the rules, surely the floor needs to be powered up?

Just_a_fan
Just_a_fan
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Re: 2026 Aerodynamic & Chassis Regulations

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It will be interesting to see whether the 2026 floor stays that simple with no features rear of the required turning vane device at the front corner. Keeping such areas free from devices might lead to closer racing.
If you are more fortunate than others, build a larger table not a taller fence.

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deadhead
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Re: 2026 Aerodynamic & Chassis Regulations

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jjn9128
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Re: 2026 Aerodynamic & Chassis Regulations

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a work of fiction by italian media
#aerogandalf
"There is one big friend. It is downforce. And once you have this it’s a big mate and it’s helping a lot." Robert Kubica

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FW17
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Re: 2026 Aerodynamic & Chassis Regulations

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deadhead wrote:
18 Jun 2024, 21:11
https://ibb.co/3k7jLBH
They should at least go full flat bottom without the 50mm step and keep only the 10 mm plank for ride height control.

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Vanja #66
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Re: 2026 Aerodynamic & Chassis Regulations

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Off topic posts from the last couple of days have been reported, let's please separate PU from Aero and Chassis regs discussions and keep things on topic here, thanks

2026 PU thread is here --> https://www.f1technical.net/forum/viewtopic.php?t=29581
And they call it a stall. A STALL!

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