Badger wrote: ↑06 Nov 2025, 15:34
Actually I think the guy who posted before used an older set of the 2026 regulations. The most recent edition I can find stipulates the following:
5.14.8 The driver maximum power demand must not be reduced at any greater than the rates defined
below:
a) 50kW in any 1s period at Competitions where the FIA determines that the power
limited distance exceeds 3500m. These Competitions and the vehicle fundamentals
used for the calculation of the power limited distance may be found in the Appendix
to the Technical and Sporting Regulations.
b) 100kW in any 1s period at all other Competitions.
Furthermore, the total power reduction is limited to a maximum of 450kW and the resulting
electrical DC power of the ERS‐K must remain above ‐100kW.
In other words, full throttle harvesting will be available but limited to -100kW.
The way they get around your worries about suddenly slowing is obviously by mandating that you gradually reduce deployment, which is covered in the same regulation above.
I was quoting issue 13 from July, but it is the same for issue 14 from mid October.
C5.12.6 Unless the electrical DC power of the ERS-K is negative, the driver maximum power demand must not be reduced at any greater than the rates defined below:
a. 50kW in any 1s period at Competitions where the FIA determines that the power limited distance exceeds 3500m. These Competitions and the vehicle fundamentals used for the calculation of the power limited distance may be found in the document FIA-F1-DOC-Cxxx.
b. 100kW in any 1s period at all other Competitions.
Furthermore, the total power reduction is limited to a maximum of 600kW and the resulting electrical DC power of the ERS-K must remain above −250kW.
The part highlighted in red is new in Issue 14.
Issue 11 from February said:
C5.12.8 The driver maximum power demand must not be reduced at any greater than the rates defined below:
a. 50kW in any 1s period at Competitions where the FIA determines that the power limited distance exceeds 3500m. These Competitions and the vehicle fundamentals used for the calculation of the power limited distance may be found in the document FIA-F1-DOC-Cxxx.
b. 100kW in any 1s period at all other Competitions.
Furthermore, the total power reduction is limited to a maximum of 450kW and the resulting electrical DC power of the ERS-K must remain above −100kW.
Issue 12 from June said:
C5.12.6 The driver maximum power demand must not be reduced at any greater than the rates defined below:
a. 50kW in any 1s period at Competitions where the FIA determines that the power limited distance exceeds 3500m. These Competitions and the vehicle fundamentals used for the calculation of the power limited distance may be found in the document FIA-F1-DOC-Cxxx.
b. 100kW in any 1s period at all other Competitions.
Furthermore, the total power reduction is limited to a maximum of 450kW and the resulting electrical DC power of the ERS-K must remain above −100kW. These limits are changed respectively to 600kW and -250kW for the Sprint Qualifying and Qualifying sessions.
