For family cars we need 4x 30-50 hp units. If the motor can weigh around 7 kg it can be placed directly on wheel. Adding durable brake discs (rarely used) and 2 inverters front ad back and we have the EV platform of the next 100 years
Personally, I'd rather see FWD with 1 100HP motor in a 2200-lb 4-seater under $20K US, but that will never happen as the supply is artificially constrained to create high-end cachet.
Some EV models have gone back to drum brakes. The main drawback of drum brakes is overheating, which is why they can’t be used for performance vehicles, even though drum brakes can deliver more braking power. EVs with strong regenerative braking reduces pressure on the brakes, making the heat build-up less of a problem.
The main advantage of this is cost, not weight or performance, but it does show that EVs have different profile to ICE cars.
Can regen brakes keep a car stopped? I would think that the braking force diminishes as the rotor speed approaches zero so it wouldn’t keep you in place on a steep hill, but I’m not sure.
In my experience, it’s usually but not always enough for the hills in SF. But more importantly, regen can’t handle emergency braking (it would generate too much current and heat), and you can’t regen at all if the motor loses its path to the battery.
Good point, I guess the motor could be engaged just enough to hold the car still on a slope but there might be heat issues doing that for too long. Mechanical brake will do that easily so also needed for that reason.
well you could have really cheap drum brakes that probably would last the lifetime of the vehicle. Maybe not even hydraulic - electro-mechanical with a mechanical (E brake) fallback.
even better a motor brake already is a thing. Its kinda of like air brakes, requires current to disengage and looks liek a little clutch thats slapped on the shaft or housing.
Apple's PCC is the best option for this kind of offload that exists.
However the PCC root keys are still signed by Apple which requires you to trust Apple and the laws in the jurisdiction Apple operates in.
Edit: for this update they seems to be running Gemini on Nvidia GPUs in Google's cloud[0]. How key management works for this part is unknown, but the standard setup for this is that Nvidia and Google would have keys too.
It does use the OHTTP relay[1] which makes it hard - maybe impossible - for Apple to hand over the keys for a particular person's data. Maybe that provides some additional protection in US courts against overreach.
Is this a problem for most people? Probably not - but it is something to be aware of.
I think Apple have made a great attempt to make this as safe and private as possible, but until we have a truly trustless E2E encrypted execution environment I don't see how compute offload technologies gets around this problem.
[0] > And to bring this model to production, we work with both Google and Nvidia to extend our Private Cloud Compute infrastructure to NVIDIA GPUs in Google’s cloud, while maintaining Apple’s unmatched privacy guarantees
Don't you think there is always going to be an escape hatch for peoples private data? Like if you ask it how to make an explosive the message won't stay private on Google's servers? Seems like there could be all kinds of things like that.
The design on the system is specifically done to make that impossible because you control the encryption keys and they can't see your data.
It nearly works except for the annoying hardware signing keys.
With OHTTP it might still be ok because it is impossible to identify which server has your content. OHTTP probably still applies to the Apple->[Google+Nvidia] version but they haven't specifically said that.
I think we should start by making exams that mirror work day performance: Presenting ideas, summarizing, reviewing a proposal and commenting etc. This is of course more expensive, but keeping exams inexpensive is one of the major problems in the age of AI.
Just to note: I was taught 3 different writing systems and my ability to write on a whiteboard is rubbish
what is rate per 100.000 tracking? I guess it means among living persons at every datapoint. If so decreasing mortality overall and final diagnosis specifically plays a large role in the numbers
They focused on the wrong product imo. File sync as in syncing the files you are actively working on and temporary files like clipboard etc. is powerful. Syncing folders and doing backups is difficult and expensive. I am still looking for a good product that makes it easy to do all that.
I always wonder with these posts:
- are they talking about coding (where I am the control flow)
- or RPA agents (in which it is obvious)
? - also don't use llm for deterministic tasks
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