903 replies to this topic

[loki]

paulb, on 07 Sept 2024 - 11:48, said:

I like this quote, “ “Other expectations were exceeded on so many fronts. The crowd, gosh, the crowd, who were there for one thing — Indy car racing. It wasn’t some $5 million music act to get them there. They were there to see IndyCar racing.”

Or a combination of racing and the fair.  It’s a win-win.  I wish they had a way to do that in the SW.  We’d go in a heartbeat.  Big concert with race?  Not so much.

[Anja]

ANF, on 07 Sept 2024 - 20:28, said:

Stupid question maybe: The Indycar hybrid system uses supercapacitors, which – unless I'm mistaken – is not the same as a battery? So even if the cause of the electrical issue may have been related to the hybrid system, I guess the battery that they talk about has nothing to do with the hybrid system? Right?

 

I think you're right. The reports I've heard say it was just the regular "old tech" battery that died - the only question is how does it connect with the hybrid system and if that was what could've damaged it. Since the team still doesn't seem to understand what happened, I'd say there's a good chance the fault was somehow hybrid related. 

[krapmeister]

FWIW Pruett said on TWII podcast that while the team wasn't 100% sure about the cause, they believe the battery was damaged due to something with the hybrid system.

Maybe some kind of power spike?

Edited by krapmeister, 08 September 2024 - 08:36.

[PayasYouRace]

ANF, on 07 Sept 2024 - 20:28, said:

Stupid question maybe: The Indycar hybrid system uses supercapacitors, which – unless I'm mistaken – is not the same as a battery? So even if the cause of the electrical issue may have been related to the hybrid system, I guess the battery that they talk about has nothing to do with the hybrid system? Right?

If it’s anything like my car, then there’s a 12V battery which does the ancillary stuff you’d expect as on any car, and then the hybrid system is separate and used only for propulsion. Racing cars typically don’t have the weight of an alternator, so all the electrical systems still have to run off the battery even when the engine is running.

 

Hybrid systems tend to charge and discharge from the drivetrain, and a capacitor based system probably has very limited connection, if any, to the cars electricals.