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Dust from car brakes more harmful than exhaust, study finds

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Re: Dust from car brakes more harmful than exhaust, study finds

#331

Post by randerson »

AngryData wrote: post #318
m463 wrote: post #181

Earlier quoted context omitted.

I suspect drum brakes were chosen by the electron pinching EV engineers. They're the only brakes that are friction-free when not applied. Disc brakes rub (and slow the car) even when not applied.

They use drum brakes because drum brakes are protected better from the environment while brake discs are not and will quickly get covered in rust and dirt when not used for awhile and then be less effective when they are actually needed for an emergency braking situation. We only ever really went to disc brakes because they were slightly cheaper and easier to manufacture and since racing vehicles used disc brakes (be…

Seems like EV manufacturers should set their cars to use the friction brakes for the first few stops of each trip, both to clean off the rust & dirt, and also to test whether they still work.

Re: Dust from car brakes more harmful than exhaust, study finds

#333

Post by ge96 »

iterateoften wrote: post #12

Having lived next to a semi-main street through a smallish California coastal city without much rain it is pretty eye opening how much black dirt and junk just coat everything next to the road. Walk down the street and touch a bush or any plant leaf and get a nice black hand in the process. The plants are covered, parked cars get covered and the inside of my apartment was covered. It wasn’t until I moved out that I s…

Some people are opportunists... you'd see Cody out there sweeping the street for some paladium

Re: Dust from car brakes more harmful than exhaust, study finds

#334

Post by randerson »

dang wrote: post #155

Related. Pretty sure there have been other major threads - if anyone can find more, let me know! Tire-related chemical responsible for salmon deaths in urban streams (2020) - https://news.ycombinator.com/item?id=41450563 - Sept 2024 (37 comments) EPA bans asbestos, a deadly carcinogen still in use decades after partial ban - https://news.ycombinator.com/item?id=39746806 - March 2024 (393 comments) Vehicle brakes prod…

Also:

Tire-related chemical responsible for salmon deaths in urban streams (2020) - https://news.ycombinator.com/item?id=41450563 - September 2024 (37 comments)

Re: Dust from car brakes more harmful than exhaust, study finds

#335

Post by porphyra »

rbanffy wrote: post #137
n8henrie wrote: post #128

Earlier quoted context omitted.

The "0-60 mph in 4.2 s" is doing a lot of the heavy lifting in this comparison.

The BMW is a lot nicer than the Model 3.

It also costs twice as much while using several times the amount of energy.

Re: Dust from car brakes more harmful than exhaust, study finds

#336

Post by jiggawatts »

datavirtue wrote: post #296
jiggawatts wrote: post #284

Earlier quoted context omitted.

Sounds like emission standards need to be updated to include everything coming off a vehicle, not just out of the tail pipe. It would incentivise clean disk materials and regenerative braking.

Emissions standards have been deleted. Finally. I'm convinced they were going to greatly increase the environmental issues. After having improved emissions for decades they had no where else to improve and started building really complex engines with extreme maintenance requirements and very low reliability compared to the late 1990s. Modern trucks are throw aways compared to mid-1990s Ford and late 1990s GM. Nissan…

I don't quite understand... you're saying it's a good thing if car manufacturers are allowed to pollute as much as they want in a race to the bottom? You prefer reliability in your vehicles over your children's health?

Could you clarify your position a bit?

Re: Dust from car brakes more harmful than exhaust, study finds

#337

Post by malfist »

datavirtue wrote: post #296
jiggawatts wrote: post #284

Earlier quoted context omitted.

Sounds like emission standards need to be updated to include everything coming off a vehicle, not just out of the tail pipe. It would incentivise clean disk materials and regenerative braking.

Emissions standards have been deleted. Finally. I'm convinced they were going to greatly increase the environmental issues. After having improved emissions for decades they had no where else to improve and started building really complex engines with extreme maintenance requirements and very low reliability compared to the late 1990s. Modern trucks are throw aways compared to mid-1990s Ford and late 1990s GM. Nissan…

Are you sure the blame is with the EPA and not the desire for ever increasing profit margins?

Seems cheaping out on quality parts is more likely to be the root of the issue than emissions standards.

Re: Dust from car brakes more harmful than exhaust, study finds

#338

Post by im3w1l »

HPsquared wrote: post #255
rbalicki wrote: post #237

Earlier quoted context omitted.

air filters will produce black gunk?

Ionizers make small particles plate-out on surfaces instead of floating in the air. It makes the air itself cleaner to breathe etc, but I suppose it could make surfaces dirtier than they otherwise would be with these especially fine particles. Usually an air purifier with ionizer will have the ionization at the filter outlet, so only the very smallest particles are affected by this process.

But if the ionizer can make particles stick to surfaces, wouldn't that mean it can also make them stick to the lungs? Because, in that case it's not so clear it's a win is it?

Re: Dust from car brakes more harmful than exhaust, study finds

#339

Post by Dylan16807 »

ravetcofx wrote: post #67
t-3 wrote: post #24

Earlier quoted context omitted.

E-bikes are unusable at this time of year. It needs to stand stably on it's own to not kill me the instant some ice appears (so, four wheels) and have an enclosed cabin to stop frostbite.

Dress warm, studded tires. People are so averse to any non ideal weather for cycling. Texas, Arizona and Nevada people say it's too hot, West coasters say too much rain, other places say snow and ice. All excuses that can be solved by better personal preparation mixed with safer better maintained cycling infrastructure. https://m.youtube.com/watch?v=Uhx-26GfCBU

Infrastructure and prep can do a lot for cold and ice. But unless we're installing locker rooms everywhere, it's less helpful for rain and not at all helpful for sweating in the heat.

Re: Dust from car brakes more harmful than exhaust, study finds

#340

Post by isx726552 »

blackoil wrote: post #139
isx726552 wrote: post #78

Earlier quoted context omitted.

This is why a move to natural latex rubber tires is necessary. Companies have experimented with them[1][2] but a world-wide switchover should be in the works. [1] https://www.continental-tires.com/about/sustainability/activ... [2] https://arstechnica.com/cars/2023/04/eco-friendly-tires-brid...

"natural latex rubber" Worldwide switch-over will destroy forest ecosystems in Malaysia, Indonesia and Africa and more to replace it with Rubber tree plantations.

Did you read the links I posted? They can be made from dandelions. More info can be found in this previous thread:

https://news.ycombinator.com/item?id=37727040

Personally I would love to see a world of 100% transit, bicycles, walking, etc., but let’s be realistic. As long as we’ve got cars, we might as well try to do as much as we can to reduce the amount of pollution they generate.

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