2025/2026 Hybrid Powerunit speculation

[BorisTheBlade]

Are they not able to put the engine in "no electrical use at all" mode? So they do the formation lap purely on ICE power, surely 400 kW can spin the rears at low speeds?

I believe this is relevant:

It means, that teams are basically allowed to use only the ICE starting full-throttle during these sections. In all other sections they are forced to start with at least 200 KW MGU-K on full-throttle.

MGU-K deployment is forced at full throttle, and then there's a specific ramp down rate (iirc its 50kW/s).

Getting the battery level right is very complex because the tire and brake warmup procedures are done in a way that cannot be predicted and must be done until the target temps are reached.

Very good point regarding the formation lap. And to be honest, I did not connect these dots as I was under the impression that this simply would not apply in formation laps. But if this is not explicitly mentioned,then surely it applies.

[BorisTheBlade]

After the australia gp something come in my mind. Maybe the complicated thing for the drivers is not to harvest the right amount at the right place, but mostly harvest as much as allowed but not to much to not reach the limit (7MJ, 9MJ,...) before the end of the lap and make the MGUK therefore useless for the last 1 or 2 turns?

China might be a very good showcase. There it might be better to store as much energy as you can before the last 3 straights and just sacrifice braking recovery somewhere else to stay inside the limit.

[MJL]

Are they not able to put the engine in "no electrical use at all" mode? So they do the formation lap purely on ICE power, surely 400 kW can spin the rears at low speeds?

I believe this is relevant:

It means, that teams are basically allowed to use only the ICE starting full-throttle during these sections. In all other sections they are forced to start with at least 200 KW MGU-K on full-throttle.

MGU-K deployment is forced at full throttle, and then there's a specific ramp down rate (iirc its 50kW/s).

Getting the battery level right is very complex because the tire and brake warmup procedures are done in a way that cannot be predicted and must be done until the target temps are reached.

Hi, can you elaborate which parts of the rules state the 200 kW power limit? I'm trying to model that and my deployment is not quite close to reality, but I am not implementing that rule yet so it must be the key. Also what are the power limited pending periods and how they change the mgu-k behavior?

EDIT: Ok I read the China thread it makes sense now.