Yes, you must be able to stop independently in the case of some kind of total power failure in the drivetrain.
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.
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.
I want to do an engine swap in my 1980s Toyota pickup (like on Back to the Future) from a 100 hp 22r to a 150-250 hp fuel injected inline 4 or turbodiesel to raise the thermodynamic efficiency from 20-25% to ~40% to nearly double fuel economy. Unfortunately, most modern engines are transverse mounted. They can fit any transmission with an adapter plate, but then they're set too far back into the firewall to access st…
You could swap the 2LTE engine, that’s the equivalent hilux diesel for 80s. You may have to import though, they are few and far between in the us.
Totally with you, I want more options for my Tacoma also!
I’ve been playing with idea of importing a lhd hilux from Mexico
I asked mythos to make a "The Way Things Work"-inspired version. Published: https://banagale.com/the-way-the-motor-works/ Source: https://github.com/banagale/the-way-the-motor-works It lacks cave people but has the woolys.
Very neat. Thank you for sharing! I assume this was one shot as well -what sort of prompt did you use? I’m sure folks would be interested even in a blog post comparing just this process with different Anthropic models if that’s something you do and need a content idea. :)
Here's the prompt I used:
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Can you make a version of this that is more in the style of "the way things work" the cool inventions book from the 90s with cavepeople and wooly mamoths and that illustration asthetic?
Just as impressive was its ability to publish the source and get the version up on my personal site. That was also a one shot but aided by context and skills I have available for these purposes.
At the very least you need something to keep the car from rolling away when it's parked.
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.
Early electric motors were awful , because there was no good way to control their speed. For example, DC motors used in some late-1900s trains still had a giant variable resistor in series with their motor, burning away a huge chunk of the power as heat to force the motor to run at a lower speed during acceleration. AC motors weren't much better. Electric motors only became truly efficient when variable-frequency dri…
Surely the variable resistor would only have been on the field winding. It wouldn't waste that much energy.
Figuring out where to place it, or how to do this took time. I'm sure some early attempts were really bad.
Mercedes acquired Yasa (UK) couple of years ago and now getting up to the speed in the production. Here is a nice video that explains axial flux motors with a factory visit https://youtu.be/B2Hl4c1iZK0?si=VfDYARyuaPVj1nKm They are so, so, small.
I wonder how developing electric motors compares to combustion engines. My hunch says that it’s the main reason the Chinese high-tech electronics industry was able to develop and iterate leading electric vehicles so fast. (Edit: My more clarified point is regarding the machinery required + place to accommodate them to work on electric motors vs. ICE metal parts and all the intermediary parts transfering power in the…
Low power and high power electronics don't actually have a lot in common other than the broad types of engineers you need to be educating.
China has industrial policy. The country and companies are able to invest in BEV technology knowing that everyone agrees on the direction.
>I wonder how developing electric motors compares to combustion engines. My hunch says that it’s the main reason the Chinese high-tech electronics industry was able to develop and iterate leading electric vehicles so fast. The talent had very little impact to be honest. The primary factor was a government looking 50 years down the road seeing that: 1. ICE engines have little to no long-term future in transportation.…
1. There is still no good answer for air transport, trans-oceanic shipping, long-haul trucking, and long-distance rail. ICE will be used there for a good while longer.
I think air transport and oceanic shipping will probably still take time owing to energy density concerns, but there are electric trucks already (with trials of roadside charging rails that can actively charge during driving), and for a large part of the world, electrified trains are the norm. It's a uniquely US problem that rail isn't electrified, even other major OECD countries are above 50% if not more, while in places like India it is almost 100% electrified railway (one of the largest networks in the world).
Mercedes acquired Yasa (UK) couple of years ago and now getting up to the speed in the production. Here is a nice video that explains axial flux motors with a factory visit https://youtu.be/B2Hl4c1iZK0?si=VfDYARyuaPVj1nKm They are so, so, small.
No, it means the motor is smaller and it can be put into the wheel
aren't there other issues with having the motor in the wheels? Unsprung mass, plus the wheels can get pretty banged around?
You could add a short drive shaft behind the springs to put the motor on the car body. That'd give you some additional advantage of moving much of the brake weight off of the wheel as well.
I've starting going back to books, either at the library or e-books. Librarians are very good at telling you if nonfiction is biased, outdated, or incorrect.
wait until AI starts publishing printed books :) https://www.amazon.com/stores/Dave-Gary/author/B0BY6Z6HP8/al...
I would hope that librarians vet those and exclude them before they hit the shelves :(.