CT scans of BYD car parts(lumafield.com) |
CT scans of BYD car parts(lumafield.com) |
I own a BYD: this is not true. The key is not hinged; rather, the entire mechanical key pulls out when a small clip is unlatched near the top of the assembly (you can see it in the CT). I assume the circular hinge-looking mechanism in the CT is just a by product of the plastic/metal weld process.
Nonetheless: very cool tech demo!
The mechanical key fallback pattern is standard across the industry for sure.
Both BYD and Tesla claim to produce around 75% of their components. Ford is at around 25%.
Tesla is indeed smaller in scale (cars/year):
BYD 4.6M
Ford 4.4M
Tesla 1.6MBut this one seems to be "state the obvious" and "recant political talking points with no new evidence".
Actually, yes, we would: https://www.kmoser.com/ctscan/
The only reason you would do this is for competitive analysis and I assure you the other car companies have already analyzed these parts.
But overall, yeah, this is mostly an advertisement. They have other videos on their YouTube where they scan random items.
Kind of surprised that the part that is perhaps the most "BYD" of the entire car, isn't actually the same cell that the BYD Blade batteries use, which was what I was most excited about seeing :(
Those are small parts, though. The interesting part is the E-axle. BYD builds a unit with an integrated motor, differential, axle, and wheel hubs. That, plus an electronics box and battery, is the power train. This simplifies vehicles considerably.
There are E-axle teardown videos. There's no big secret about how to do this. Copying this is hard for Detroit, because they have a huge investment in "engine plants". With this design, BYD doesn't need standalone engine plants.
Tesla ought to be doing this, but they're into performance, not cost. They want to put two or four motors in a car. BYD does make supercars, to show off, but their volume products are reasonably good cars with E-axles and lithium iron phosphate batteries, which work fine. (It's not clear that Tesla is even into car design at all any more, but that's another issue.)
Detroit ought to be doing this, but they insist on making electric cars that are modified gasoline cars. Ford has an electric Mustang, an electric F-150, and an electric Transit. Chrysler doesn't even make cars any more, just one minivan. GM has a good Bolt now, which they are killing to appease Trump.
So wait, the whole axle is solid then? Like a 1960s pickup truck but with all the weight of the motor and gearbox hanging off it too?
That must give it ridiculous unsprung weight.
https://en.wikipedia.org/wiki/De_Dion_suspension
you still see these in velocipede-style vehicles commonly.
and to your point : a dead axle is an effort to reduce unsprung weight compared to a live axle; it also lets you actually use alignment as a remediation for asymmetry issues rather than just pre-delivery straightening.
On the contrary, this much integration makes repairs nearly impossible, meaning you might have to swap the whole unit(for a lot of $$$) when something small inside it inevitably breaks.
Check out the articles published by EVclinic that cover such cases.
Aftermarket EV repairs are already big business due to how difficult and expensive the OEMs make it.
Like Honda engines on their myriad pedestrian cars. I'm sure there's exceptions, but the engines tend to be ridiculously reliable. The rest of the car often fails (due to age and/or rot and/or deferred maintenance and/or crash) and leaves a very good engine behind.
Accordingly, junkyards are full of Honda engines that work fine.
Thus, there's very few people rebuilding them. They certainly can be rebuilt, but it usually just doesn't make financial sense to strip it all down and freshen everything up.
So when an engine does fail on an otherwise-working Honda daily-driver that is actually worth repairing, then the usual move is to swap in a used motor.
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So if it's reliable enough, and there's also critical mass, then it doesn't matter much if the BYD drivetrain unit has easily-repairable components.
(I'm not sure if there was a way around this, there may well have been but I had other things going on and sold for scrap)
And once they give out, you can just replace the whole unit for maybe $2000.
Edit: I agree with you and upvoted your comment which I feel was unfairly downvoted. But economics are going to win here, only a tiny fraction of the user base of cars (or phones) tinkers with them.
I do remember the visceral joy of trying to keep a supercharged Camaro on the track, but those memories are overwhelmed by the terror of “what is that noise”. Now I drive a Tesla that accelerates faster than that Camaro, handles better, and hasn’t been to the shop once.
If I win the lottery I will buy another Camaro and a Corvette and I’ll work on them for fun, and kids will look at me the way I looked at old men who take care of antique steam engines and traction engines and take them to fairs. That sure is a lot of noise and smoke and doohickeys for very little speed and power!
The U.S. Wants to Ban China's High-Tech Cars but They're Already Here in El Paso - https://news.ycombinator.com/item?id=48363751
* WSJ: https://www.wsj.com/business/autos/chinese-cars-byd-geely-u-...
They are now the 2nd biggest seller after Toyota (https://www.msn.com/en-au/news/insight/byd-overtakes-rivals-...).
They are also priced much lower than KIA and Tesla.
FWIW I now own a GWM Cannon Αlpha PHEV pickup. Have also owned a Jeep Wrangler - the tech, build quality and reliability is not even on the same planet.
I can't imagine how the US manufacturers would compete with the Chinese ones on a level playing field. Not from the US, but it's hard to see how any administration would allow that. Would be the end of the local industry.
One without cheap cars or EV's, even though that's what people want and need now.
The “Design for purported Safety vs. Design for Saving Dollars” principle at work.
https://www.rockauto.com/en/catalog/jeep,2012,grand+cherokee...
Only if someone makes and sells those power electronics to you along with the appropriate DRM tools required for calibration and pairing with the other electronics of the car. Otherwise you're shit outta luck.
>Mechanical parts are more integrated, but they so simple that they can last for decades.
Simple != decades of reliability, when the design and manufacturing quality are piss poor in the race to the bottom for cost cutting and shareholder returns. Timing chains were also supposed to last a lifetime but plenty have been recalled due to know timing chain issues from manufacturing quality.
VW and Kia/Hyundai EVs were found to use custom dimensions motor bearings that can't be bought on the open market from anywhere, so only the OEM and their dealers can get them via their supply chain.
From what I see online, Teslas, especially MS/MX, are actually quite like an EV-swapped Toyota than anything futuristic. A lot about their cars(exception being CT and Semi) are ICE-mass-market-car coded. They're car equivalents of ARM PCs in ATX form factor like NVIDIA's DGX Station, opposite to the likes of trashcan Mac Pro.
In the past year, the heater failed (PTC Heater had to be replaced), and the lateral link ball joint ball joint had to be replaced. That is about CAD5000$ worth of work. There is also an issue with a wire in the rear center seatbelt that broke (but after a check, it doesn't really have any safety concerns wrt airbags so it is OK to leave as is), and the top roof glass cracked. (I also had to replace the front windshield, but that's normal in Calgary and I don't hold it against the car)
I'm not "rough handling", I have a Toyota Sienna without any of these problems. On the bright side, the battery has no problems and no imbalances so fixing it will keep the car running for years (hopefully).
I bring this up because I find it very annoying that people were painting hagiographies of these cars when they have real issues. None of the issues above should be happening. Moreover, there are no 3rd parties providing parts (supposedly because of patents).
In the end, I'll never buy another gas car again but my cute tiny car has a bigger turn radius than my Sienna. It's lost more value than my Sienna. I agree with the poster who said that it isn't even clear if Tesla is interested in cars anymore.
If BYD is also creating cars that are expensive to maintain, then hard pass. I'm ok with having legislation to fix this.
No, they're faulty coolant seals of the electric motor, wrecking the power unit.
>but those memories are overwhelmed by the terror of “what is that noise”.
I just turned up the music till the noise went away. Problem solved.
>Now I drive a Tesla that accelerates faster than that Camaro, handles better, and hasn’t been to the shop once.
Good for you, but do you know there's a whole lotta other EV brands out there? And many are not as well and reliably designed as your Tesla.
>I do remember the visceral joy of trying to keep a supercharged Camaro [...] If I win the lottery I will buy another Camaro and a Corvette and I’ll work on them for fun
Nice story, but what does all this have to do with the parent you're replying to? Did he mention ICEs anywhere?
This is doing a lot of work but I'm going to go with a charitable interpretation. I seriously doubt that we'll ever hit a state where replacing a 2 ton vehicle is cheaper than repairing it. And if we do, I'll have to re-evaluate my charitable interpretation, because something shady is likely going on.
The crazy thing is people don't even repair things that are cheaper to repair than replace. Our countertop icemaker broke and my wife wanted to throw it out. I fixed it with 20 minutes of time and a $15 motor from Amazon.
I think the broader trend isn't what's cheapest, its what is easiest, even if its more expensive. People in large part have no idea how to repair anything they own. This mass ignorance is leading to some pretty poor market incentives.
Which is why I'm so baffled how and why the EU has spent so much time and effort regulating batteries and charging ports for phones, but still ignores this massive issue of ease of repairability and right to repair of personal vehicles that has been plaguing car owners since the ICE days and is now only getting worse with EVs, that's costing us a lot more money than what's costing users to pay Apple to replace your cracked display and dead battery.
It feels like they just keep going for the lowest hanging fruits to score easy wins that don't impact local industry, while ignoring the entire forest behind them.
Jarvis, pull up on the central HUD how much the EU car industry spent on lobbying in the EU over the last 15 years.
This is about so much more than cost. Agency, autonomy, environment, efficiency, geopolitics even.
I refuse to buy drm'ed gear. The exception is second hand where I can reliably avoid the drm with little effort. At its simplest, that means never using specific drm'ed functionality. At its most complicated, that means mitm'ing an encrypted can bus.
The mobile phone industry turns product into landfill on a yearly or more frequent basis.
People might do a yearly model swap on a car, but the car itself stays on the road for 10-20 years.
Changing how it's built needs to be done cautiously, but also has a much longer payback period.
I don't think this is true. If this is the trend you're seeing it's probably because you're sampling through people with relatively high disposable income(or who don't mind endless credit card debt), who can just afford to throw away broken things when it's just a rounding error of their income.
But if you look at lower income people(with sane spending habits and financial literacy) you'll see how they first ask around if something can be repaired before they claw money from their checking account to buy something new.
My local facebook group is full of students asking if someone can fix their macbooks for cheap as they can't afford a new one or what Apple is quoting them, which is close in cost to buying a new one.
My minimum wage gf still had her barely functional Windows 7 notebook up until a year ago because she didn't feel like spending money to buy a new one if I could just keep fixing it.
Some broke people try not to buy new things if they can, but some are broke because they can't stop buying new things.