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CT scans of BYD car parts

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Re: CT scans of BYD car parts

#101

Post by gsquaredxc »

866-RON-0-FEZ wrote: post #53

This looks like a stealth advertisement for their CT scanning business. There is nothing educational of value for the general public here. The only reason you would do this is for competitive analysis and I assure you the other car companies have already analyzed these parts.

I would say that there’s quite substantial value perhaps not to the general public but to the general HN user from their reports. I was very excited to see them have a public scan of an LFP battery because the previous scans they did of batteries were very informative on which brands to trust and the level of inconsistency that can exist. Their analysis of BYD’s battery design is very useful to someone who is looking to understand LFP and the levels of quality control necessary to have safe batteries. The reports are a bit of a “How it’s Made” but written for the target audience of engineers and has similar utility.

Re: CT scans of BYD car parts

#102

Post by stx5 »

joe_mamba wrote: post #8
Animats wrote: post #6

Nice. 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…

>This simplifies vehicles considerably. 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.

that's the reason why BYD provides lifelong warrant for their batteries, motors

Re: CT scans of BYD car parts

#103

Post by yuye »

King-Aaron wrote: post #90

I've got a friend whos a master tech/trainer with our state automotive body, and is HV certified etc for dealing with these cars. He's currently got a BYD Shark strewn across his workshop for an autopsy. I have to say I'm super impressed with how heavy duty everything is. The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear. The powertrain components all look to…

>The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear.

While I think the "chinese quality bad" narrative still applies to many Chinese brands, this isn't as universal as it was in the past.

I think my eyes were first opened when I bought myself a Huawei phone(before the Google ban). My first few smartphones had been Samsung, I've always felt the term "planned obsolence" was the best way to describe these phones: After just a year, the phone felt considerably slower, and after two it was almost unusable.

Huawei flagship phones were similar in price to Samsung, but I felt they lasted way longer.

Re: CT scans of BYD car parts

#104

Post by dakolli »

King-Aaron wrote: post #90

I've got a friend whos a master tech/trainer with our state automotive body, and is HV certified etc for dealing with these cars. He's currently got a BYD Shark strewn across his workshop for an autopsy. I have to say I'm super impressed with how heavy duty everything is. The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear. The powertrain components all look to…

I'd rather own Chinese everything over American. Everything America makes is slop and corners are cut for profits so the owners of companies can own their third home and maybe a yacht. The truth is Chinese engineering quality exceeds the West in almost every domain at this point.

I'd move there given the opportunity, the business owners of America are willing to poison and put the lives of their fellow citizens at risk for literal pieces of paper. I'm ashamed to be American.

Re: CT scans of BYD car parts

#105

Post by Toutouxc »

joe_mamba wrote: post #20
lowbloodsugar wrote: post #12

Earlier quoted context omitted.

Most of those stories are 1/ crashes and 2/ hybrids. Again, with rare exception, manufacturers are just making gas cars with EV power trains. Tesla and BYD are making next gen transport. Are you old enough to remember when TVs broke so often that TV Repairman was a job? One day we will look back on car mechanics the same way. I do remember the visceral joy of trying to keep a supercharged Camaro on the track, but tho…

>Most of those stories are 1/ crashes and 2/ hybrids. 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 kno…

> turned up the music till the noise went away

I viscerally hate people who do or seriously suggest this. First, ignoring any strange noise in a car almost always leads to more expensive and stressful repairs down the road. Second, how the hell do people hear a noise and are simply okay with not knowing the source? Not understanding the situation and not being able to make any kind of informed decision?

Re: CT scans of BYD car parts

#106

Post by ssl-3 »

B1FF_PSUVM wrote: post #98
ssl-3 wrote: post #47

Earlier quoted context omitted.

On the other hand: If the assembly is reliable- enough , then repair isn't normally something that needs to be pursued in the first place. 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, ju…

> pedestrian cars. That's an interesting turn of phrase ...

Thanks. As the owner of a 14-year-old Honda that is equipped in the most lavish of trim options, I found great pleasure in selecting that particular subperlative.

Re: CT scans of BYD car parts

#107

Post by gofastercloud »

King-Aaron wrote: post #90

I've got a friend whos a master tech/trainer with our state automotive body, and is HV certified etc for dealing with these cars. He's currently got a BYD Shark strewn across his workshop for an autopsy. I have to say I'm super impressed with how heavy duty everything is. The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear. The powertrain components all look to…

In the last few years Chinese manufacturing has reached a very high-level. The reason most people still believe that Chinese-made stuff is poor quality is because they will do what they are told and they are usually told “make this as cheap as possible” by whoever is paying the bills.

While I reckon some other countries still have specialist manufacturing in key areas that surpasses China, most “common” parts can be made in China to a standard that meets or exceeds Western countries, if you’re willing to pay for it.

Re: CT scans of BYD car parts

#108

Post by acdha »

gofastercloud wrote: post #107
King-Aaron wrote: post #90

I've got a friend whos a master tech/trainer with our state automotive body, and is HV certified etc for dealing with these cars. He's currently got a BYD Shark strewn across his workshop for an autopsy. I have to say I'm super impressed with how heavy duty everything is. The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear. The powertrain components all look to…

In the last few years Chinese manufacturing has reached a very high-level. The reason most people still believe that Chinese-made stuff is poor quality is because they will do what they are told and they are usually told “make this as cheap as possible” by whoever is paying the bills. While I reckon some other countries still have specialist manufacturing in key areas that surpasses China, most “common” parts can be…

> The reason most people still believe that Chinese-made stuff is poor quality is because they will do what they are told and they are usually told “make this as cheap as possible” by whoever is paying the bills.

I’m reminded of all the dismissals people made about the skill levels of Indian software developers when the explanation was that the more skilled ones knew they could do better than the MBAs were offering to make the savings sound even more impressive.

Re: CT scans of BYD car parts

#109

Post by HerbManic »

yuye wrote: post #103
King-Aaron wrote: post #90

I've got a friend whos a master tech/trainer with our state automotive body, and is HV certified etc for dealing with these cars. He's currently got a BYD Shark strewn across his workshop for an autopsy. I have to say I'm super impressed with how heavy duty everything is. The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear. The powertrain components all look to…

>The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear. While I think the "chinese quality bad" narrative still applies to many Chinese brands, this isn't as universal as it was in the past. I think my eyes were first opened when I bought myself a Huawei phone(before the Google ban). My first few smartphones had been Samsung, I've always felt the term "planned ob…

I have had a fairly good run with a lot of these Chinese phones. Huawei when we could still get them was great. Xiaomi is great build quality but they are rotting out their OS with too much bloat and up sell. Oppo has been brilliant in that they are built well, cheap and allow you strip out anything you don't want.

Re: CT scans of BYD car parts

#110

Post by HerbManic »

dakolli wrote: post #104
King-Aaron wrote: post #90

I've got a friend whos a master tech/trainer with our state automotive body, and is HV certified etc for dealing with these cars. He's currently got a BYD Shark strewn across his workshop for an autopsy. I have to say I'm super impressed with how heavy duty everything is. The control arms, subframes, etc all look good and don't fit the 'chinese car bad' narrative you always hear. The powertrain components all look to…

I'd rather own Chinese everything over American. Everything America makes is slop and corners are cut for profits so the owners of companies can own their third home and maybe a yacht. The truth is Chinese engineering quality exceeds the West in almost every domain at this point. I'd move there given the opportunity, the business owners of America are willing to poison and put the lives of their fellow citizens at ri…

I agree with the quality of some of the stuff coming out of China but when it comes to poisons and risking the lives of citizens, I have some bad news for you. That is how they undercut so heavily by foregoing those standards.
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