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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

#251

Post by nullstyle »

jazzyjackson wrote: post #194
nullstyle wrote: post #53

Earlier quoted context omitted.

That still wouldn't be comfortable

Pedaling warms you right up :)

Warm is not the same as comfortable. Listen, I'm from alaska and have several family members who routinely ride bicycles to work and around town in the winter. Except when it's storming. Except when their hip hurts. Except when it's breakup. Except when they need to get groceries or run an errand across town at the end of a workday. Except ad nauseam. You still have to own a car to make life in alaska livable in the winter, and snide remarks by able-bodied dipshits about just using the trike referenced above deserve derision.

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

#252

Post by Scoundreller »

plasticchris wrote: post #220
robin_reala wrote: post #178

Earlier quoted context omitted.

Yeah, my VE id.3 has drums on the back and disks on the front. Apparently the brake pads are effectively life-of-the-vehicle items under normal driving conditions.

I’ve only had to change them one time on any car newer than 1990, after ~200k miles/10 years of use. For most people that qualifies as life of the vehicle, but there was plenty of life left.

The drum brakes or the rotors? Certainly not the disk brake pads!

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

#253

Post by BizarreByte »

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…

> 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.

One day I made the mistake of leaning against the wall in a TTC subway station while in a white shirt. I didn't realize how much oil, brake dust, and other mechanical grime there was until that moment.

I had to go home and change.

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

#254

Post by aaron_m04 »

Scoundreller wrote: post #250
caycep wrote: post #213

Earlier quoted context omitted.

There was that whole study with some additive in tire compounds, killing whole rivers of salmon until they figured out what it was

EVs can be pretty bad for tire wear, not just due to vehicle weight, but the amount of torque available (and consistently available) that leaves most ICE vehicles in the dust. Depends on driving style of course

If you have an EV and you care about health and the environment, use regenerative braking as much as humanly possible.

Hint: driving fast or tailgating both increase the odds you'll have to use the friction brakes.

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

#255

Post by HPsquared »

rbalicki wrote: post #237
93po wrote: post #232

Earlier quoted context omitted.

do you have an air filter with an ionizer by chance? those will also do that

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.

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

#256

Post by smitelli »

rightbyte wrote: post #244
lukevp wrote: post #215

Earlier quoted context omitted.

Are you familiar with how disk brakes on a car operate? They’re essentially a hydraulic piston clamping the brake pads against the rotor. When you let off the brake pedal, the pressure is removed, but there’s not a “retraction” of any kind. So there’s no pressure but nothing is actually making that gap. That article was articulating basically that the piston, when not compressing the brake pads, should not be too far…

> When you let off the brake pedal, the pressure is removed, but there’s not a “retraction” of any kind. So there’s no pressure but nothing is actually making that gap. The wobble pushes the pads back in, right?

A healthy disc shouldn’t wobble enough to push much of anything. We’re talking like 1/20th of a millimeter.

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

#257

Post by Scoundreller »

Schiendelman wrote: post #174
actionfromafar wrote: post #165

Earlier quoted context omitted.

Studies are always good, but it almost trivially follows that the tread loss must go somewhere.

EV specific tires have basically eliminated the difference in tread loss already. And because there's public pressure on this, the toxicity of the materials and tires is decreasing rapidly. Every study I've seen from people pushing on this uses very old information about tires, proving there's a problem really requires updated work taking these things into consideration.

Can I put these EV specific tires on my ICE to get super-duper tread life?

(and have the tire companies been conspiring to make tires disposable?)

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

#258

Post by lolinder »

bovermyer wrote: post #219

I wonder about the larger context here, though. No matter what academic studies discover or examine, the rise of anti-intellectual culture suggests that we as a species are going to need to pivot to documentary efforts, in a hope that what we learn in isolation now survives to be acted on in a future, more exploratory, generation.

We could also try to fix the anti-intellectual culture instead of just griping about it and/or retreating. It didn't emerge out of thin air, it emerged as a reaction to a mostly-accurate sense among non-intellectuals (i.e., the people who make most of the world actually work) of being constantly condescended to by the intellectual class.

What we need isn't to go all prepper for some kind of dark age, what we need is a new breed of intellectual that actually makes an effort to understand what life is like for the 65% of the population without a 4-year degree and then attempts to bridge the gap rather than trying to run the world from within a filter bubble.

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

#259

Post by MengerSponge »

jeffbee wrote: post #107
MengerSponge wrote: post #101

Earlier quoted context omitted.

If you include e-bikes and e-scooters as EVs, sure. If you mean cars and trucks, the F150 Lightning, the EV6, the Ioniq 5, the EX30, and every other vehicle is heavier than its ICE counterpart. The motors are inherently torquier too. disclaimer: I drive an electric car but would sell it in a heartbeat if I could use transit or bikes to safely and efficiently get to work, the grocery, and the doctor.

They aren't inherently torquier. That's a design point.

It's Lenz's Law, friend. It's as much a design point as a=F/m. Because of it, induction motors and magnet synchronous motors generate more torque at 0RPM than any combustion engine I've heard of.

You could have software limiters, but you'd need regulatory mandates for that. Actually, I support that. 3+ ton trucks with a sub 4s 0-60 shouldn't be street legal. Or they should at least require a special license and liability insurance.

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

#260

Post by carlosjobim »

ajmurmann wrote: post #63
xhkkffbf wrote: post #14

Earlier quoted context omitted.

I think the key is to make a class of light-weight EVs with smaller, lighter batteries for life around town. Most of us rarely drive more than a few dozen miles a day. But then there are those weekend trips.

I'd love one of these as an electric commuter vehicle: https://pressroom.toyota.com/album/toyota-i-road/ Unfortunately it seems to have gone nowhere

There's billions of motorcycles in the world.
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