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FW17 wrote: ↑

25 Dec 2024, 03:38

From 2006 to 2013 cars had about 750hp. 2026 engine and the mgu can match that for the entire lap.

The difference is the 150kg of additional empty weight in comparison to 2013 cars. But starting weights in 2013 was 800 kgs, 2026 cars would be 830 kg just 30kg difference.

Weren't 2026 engine power predictions in the ~650 sustained range? I thought the expectation was similar harvesting to now since the MGU-H was doing most of the harvesting in the current cars, while the ICE would be dropping to around 400KW?

Does fuel burning really improve ERS performance enough to sustain 750 HP? that's like 6MJ of deployment/harvesting over a 1:30 lap with 66% time on throttle.

I guess when you start considering time on throttle the 2026 regs suddenly seem a whole lot less awful than the apocalyptic performance we were imagining when they were first announced. Obviously fuel burning helps a ton, but still. Like yeah 9MJ over a 1:30 lap is just 225kW, but when you only spend 3/4 of the time on throttle you suddenly have nearly 300kW over the entire lap. That isn't bad at all. Obviously harvesting won't be anywhere near 9kW, so you may only get 150kW on average, but thats still nearly 800HP.

I think my anger may have been misplaced, the 2026 regulations actually look pretty cool, especially with the chassis regulations making up for some of the shortcomings.

bananapeel23 wrote: ↑

01 Jan 2025, 22:44

FW17 wrote: ↑

25 Dec 2024, 03:38

From 2006 to 2013 cars had about 750hp. 2026 engine and the mgu can match that for the entire lap.

The difference is the 150kg of additional empty weight in comparison to 2013 cars. But starting weights in 2013 was 800 kgs, 2026 cars would be 830 kg just 30kg difference.

Weren't 2026 engine power predictions in the ~650 sustained range? I thought the expectation was similar harvesting to now since the MGU-H was doing most of the harvesting in the current cars, while the ICE would be dropping to around 400KW?

Does fuel burning really improve ERS performance enough to sustain 750 HP? that's like 6MJ of deployment/harvesting over a 1:30 lap with 66% time on throttle.

I guess when you start considering time on throttle the 2026 regs suddenly seem a whole lot less awful than the apocalyptic performance we were imagining when they were first announced. Obviously fuel burning helps a ton, but still. Like yeah 9MJ over a 1:30 lap is just 225kW, but when you only spend 3/4 of the time on throttle you suddenly have nearly 300kW over the entire lap. That isn't bad at all. Obviously harvesting won't be anywhere near 9kW, so you may only get 150kW on average, but thats still nearly 800HP.

I think my anger may have been misplaced, the 2026 regulations actually look pretty cool, especially with the chassis regulations making up for some of the shortcomings.

9MJ over a 90s lap is an average deployment of 100kW, or 134hp.

They downgraded the recovery to 8.5MJ a few rules issues ago.

75% of a 90s lap is 67.5s.

For 9MJ that averages out at 133kW, or 179hp.
For 8.5MJ that averages out at 126kW, or 169hp.

It also means that there is only 22.5s for recovery.

Which would require an average recovery power of 378kW to get 8.5MJ, and 400kW to get 9MJ. The maximum is 350kW.

The other scenario you suggested was 66% of the lap on the throttle.

66% of a 90s lap is 59.4s.

For 9MJ that averages out at 152kW, or 203hp.
For 8.5MJ that averages out at 143kW, or 192hp.

It also means that there is 30.6s for recovery.

Which would require an average recovery power of 278kW to get 8.5MJ, and 294kW to get 9MJ.

Fortunately the rules reduce the MGU power above 290km/h, so full MGU power cannot be used for very long on straights.

The original estimated power of the ICE was 400kW. If they produce exactly that, they will only have 800hp or more available below 320.7km/h.

But some sources have suggested more power, even as much as 450kW.

This formula will rely on the ICE substantially exceeding the estimated efficieny across the power band, enabling more recovery from part throttle.

2026 concept made in cad (issue 10)

Qvist designs wrote: ↑

07 Jan 2025, 13:49

2026 concept made in cad (issue 10)
https://cdn.discordapp.com/attachments/ ... 0c31b0f45&

How much smaller is the Front Wing - Left - Right & Front - Back ?

Qvist designs wrote: ↑

07 Jan 2025, 13:49

2026 concept made in cad (issue 10)
https://cdn.discordapp.com/attachments/ ... 0c31b0f45&

The front wing will have vertical separators somewhere alone it's length to allow for the movable flap mechanism to pivot. I doubt the pivots will be the sides of the nose.

For reference

Qvist designs wrote: ↑

07 Jan 2025, 13:49

2026 concept made in cad (issue 10)
https://cdn.discordapp.com/attachments/ ... 0c31b0f45&

The front wing will have vertical separators somewhere alone it's length to allow for the movable flap mechanism to pivot. I doubt the pivots will be the sides of the nose.

For reference



The designers will then stat using the vertical separators as vortex generators aimed at meeting the other vortex inwashed from the end plate both aiming at the barge board elements and along the edge of the floor.

Not sure if the floor it self will ouwash like we saw in 2017 onwards.

There is a 2026 mod for Assetto Corsa.





They have modelled them much like now, but surely that is for the outwash concept that may not be suitable for the 2026 rules.

Will they continue this way, or go back to something like 2008, or do something different?

I'm not clear how the ERS is working.

Hi guys I’m trying to design my own car based on 2026 regulations and I decided to share my ideas on Twitter. I would be very pleased to hear other ideas on aerodynamic devices and how to improve them. So feel free to leave a comments
https://x.com/jancikapral?s=21&t=4V_LRJF3zw7Uf_5NCmW0uQ

janci_kp wrote: ↑

15 Jan 2025, 01:28

Hi guys I’m trying to design my own car based on 2026 regulations and I decided to share my ideas on Twitter. I would be very pleased to hear other ideas on aerodynamic devices and how to improve them. So feel free to leave a comments
https://x.com/jancikapral?s=21&t=4V_LRJF3zw7Uf_5NCmW0uQ

Cool , thx to share, let me take a look

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Why is venturi floor so sensitive at height compare to flat floor, why they dont have this problems in flat floor era?

How much shorter are the '26 cars expected to be? (or prescribed to be) Not this short I assume. I assume crash structure performance might limit how short FIA-approved cars could become. Regardless, one goal looking forward could be to make Monaco less precessional via narrower and shorter cars.

2026 flat floor + diffuser or venturi?
on photo is flat but in video say still reduced venturi
?

hsg wrote: ↑

17 May 2025, 18:38

Why is venturi floor so sensitive at height compare to flat floor, why they dont have this problems in flat floor era?

Poor regulation. Perfect seal would be ideal, but also getting close to it massively improves performance. They should have allowed sideskirts or make the gap at the sides so large you would get negligible venturi effect. They'd be more like wing-cars.