Rally1 hybrid cars (2022-)

[Fast Eddie WRC]

Question on the DF podcast..

On a typical 20km tarmac stage how much time will a driver lose if his hybrid system has failed ?

[Mirek]

Question on the DF podcast..

On a typical 20km tarmac stage how much time will a driver lose if his hybrid system has failed ?

A question which DF can not answer.

[Fast Eddie WRC]

Under the skin of a Puma...

[Sulland]

How many 1000s of kilometer have the Hybrid unit been tested in a rallycar, with top drivers and at top speeds?

[traxx]

It is not allowed to trigger the hybrid system, but could it be interesting to have a system to manage conditions that trigerring the hybrid system ?

For instance, a button to be sure to have a valid regen when you brake to have a 30kj regen. If the driver know that is really interesting to have a boost just after this corner, could be interesting to be sure to have enough braking even if it's a little bit to much for the corner.

Another example, a button to be sure to not trigger the boost when accelerating because the driver knows it's interesting to use it just after.

Or just indicators to know if the valid regen is done, if the boost is available or the level of energy available.

Do you know if this kind of system could be interesting and if it's allowed ?

[Tom K]

I think part of this was lesson for tests. They need to know/learn how strong should be braking at the given speed, to have valid regen.

and this

"If the driver know that is really interesting to have a boost just after this corner, could be interesting to be sure to have enough braking even if it's a little bit to much for the corner" - I think it is small portion of strategy which every driver was talking about. This is probably additional thing to analyze during/after recce and during talks with engineers

[traxx]

I think part of this was lesson for tests. They need to know/learn how strong should be braking at the given speed, to have valid regen.

and this

"If the driver know that is really interesting to have a boost just after this corner, could be interesting to be sure to have enough braking even if it's a little bit to much for the corner" - I think it is small portion of strategy which every driver was talking about. This is probably additional thing to analyze during/after recce and during talks with engineers

Can they develop a system to help the driver to do that ? By displaying data or by providing a button to activate a system or by an auto-enabled system depending of conditions (GPS, distance from the start, ...) ?

[WRCStan]

Can they develop a system to help the driver to do that ? By displaying data or by providing a button to activate a system or by an auto-enabled system depending of conditions (GPS, distance from the start, ...) ?

The only button they have is activate/disable, with 60s required between disable and activate. They could program logic into the ECU as part of the three map options, but this is a hard-coded homologated part so they won't be inputting individual stage parameters like gps zones.

If they need an acceleration boost after the next bend chances are they will be braking for the bend. If they need to force a regen to gain an acceleration boost then 30kj is 1 second of braking with this equipment, breaking harder is a myth. I can't see it being worth doing.

[ictus]

I think part of this was lesson for tests. They need to know/learn how strong should be braking at the given speed, to have valid regen.

and this

"If the driver know that is really interesting to have a boost just after this corner, could be interesting to be sure to have enough braking even if it's a little bit to much for the corner" - I think it is small portion of strategy which every driver was talking about. This is probably additional thing to analyze during/after recce and during talks with engineers

I think it's phisically impossible to regen enough energy that it would benefitial to brake more than it's necessary.

[Fast Eddie WRC]

Tanak 5th fastest on run 1 of RMC shakedown without any hybrid boost.