A federal guarantee of debt is a subsidy, one with horrendous potential downside. A CEO really shouldn't be so flippant, though I think he knows what he's saying.
3000 hp? Not sure if that's measured at the "crank" or the dynamo, but that's over 2MW, probably pushing 2.5MW of power draw from the batteries assuming a motor efficiency of 90% and some other losses. Apparently that's getting drawn at 1.2kV from the batteries, so "only" around 2kA of current draw.
That top power draw would drain the 80kWh batteries in around 2 minutes, though I'm guessing you'd hit thermal throttling or catastrophic failure before that. The batteries are allegedly rated to 30C, meaning 2 minutes to full discharge at max current.
I'm curious how the heat dissipation of EVs compares to ICE vehicles. You have much higher efficiency vs combustion and get to split the power between 4 motors instead of one engine, but you don't get the heat capacity of a massive engine block, or the convection of cold air intake + hot exhaust out the tailpipe.
28kW of dissipation is pretty solid, though obviously is irrelevant during a short burst with hundreds of watts of heat generated. I guess the frame itself act as the fallback heatsink for storing excess heat in these scenarios? Because by my math, a modest 100kg heatsink (no idea if that's reasonable) would reach 270°C in only around 45 secondw if it's trying to handle 250kW+ of heat transfer (270C is roughly the max differential for heat pipes,liquid cooling might be significantly lower limit). And obviously the batteries can't handle 270C.
2kA was pretty standard for a high end DC motor controller back 20 years ago when people were doing EV conversions with Optima Yellow Top batteries and Warp9 DC motors. Doing it at 1200V is new, though.
It's not unexpected for a record-attempt car to have severely decreased range at top speed, they're pushing up against all the limiting factors at once, hard. I seem to recall reading something about the Bugatti Veyron only having 15 minutes of tyre life at full throttle, but this not being an issue because it only carried 12 minutes worth of fuel. :)
Motor output, so you’ll still have transmission loses beyond that (but with a fixed drivetrain, with no multi-speed gearbox, quite possibly more like 95%).
Only from a refueling (and battery heat) perspective though...
The majority of the lemans (or any endurance race) challenge is not from the electric drivetrain (or regenerative braking) but from the ice drivetrain and friction braking. This is reinforced by the ease that WEC and IMSA have had in implementing electric hybrid drivetrains with relative ease over the last 10 years (by most measurements making the endurance more achievable).
A sanctuary city means not having local police cooperate with federal immigration officials. There is no constitutional requirement for local police departments to do so.
Restorative justice makes a lot of sense to me in a society that has weak or no centralized power. Social hierarchy sure, but not an absolute monarch. Once you have a strong government with a monopoly on violence (police), then you can attempt to enforce retaliatory justice in a controlled and ideally neutral way, by the state. Without a monopoly on violence, then obviously just doling out mob retaliatory violence leads to anarchy.
I'm not sure that you can have a modern large society with millions of strangers that relies only on restorative justice. I think you need strong communal cohesion for that to work by itself, and even in a relatively culturally homogeneous society, I'm not sure that scales beyond the size of towns.
This Oracle surge and revenue predictions really feels like jumping the shark. I mean, it's Oracle.... I've never felt confident enough to bet against a company, but a short position on Oracle may well be too tempting for me.
I lost money betting against Oracle. It taught me to never underestimate the power of a sales and marketing organization, even if the product they’re selling is technically backwards.
Neither of those things are considered protected speech, and you can be imprisoned for conspiracy to commit kidnapping/murder even if neither actually occur.
And murder is against the law and not a proper use of the 2nd amendment. My point is that people can abuse their rights to do bad things. We don't use people doing bad things with their speech to remove the 1st amendment.
My experience with cheap modern microwave failures has been the door sensor failing, which for safety ofc prevents the magnetron from running. I had one fail in about 2 months, thankfully fixable with a $10 sensor and 15 minute of work. Same goes for a lot of appliances, repaired a dryer that had its door sensor fail (in fact, they all tend to use identical door sensors as far as I've seen, dryers and washing machines and microwaves).
My personal experience with a modern microwave (they mostly seem to be the same design internally, coming from the same chassis with the same electronics just a different button panel) was that the internal light bulb blowing generated a surge (it was a mains voltage bulb) that wasn't fused so the next nearest thing in the mains circuit was a trace on the motherboard that vaporized.
There is no way of easily changing this bulb (inside the main casing with no access panel for the bulb) so for want of a single in-line fuse, the entire microwave was rendered scrap[0] by the lifetime of a light bulb.
[0] - Except for the fact that I care not for electrical safety "DO NOT OPEN" warnings of doom due to being actually competent with handling high voltage equipment and being able to do a board level repair on the burned out trace without touching the very large capacitors associated with the very high voltage side controlling the magnetron...
reply