631–640 of 783 posts
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> How do we solve the renters-that-cant-charge-their-cars problem? By solving the renters-think-they-need-to-own-a-car problem.
We don’t have a housing problem. We have a people think they need a room with a window problem.
For DIY EV conversions (I built some cars) you usually hook up the "regenerate braking" to the brakelight switch. So as soon as you tap the brake pedal just a little, you start regenerating and see the amps flow back into the battery (I have a little display on my dashboard). Only when you press the pedal further, do you start engaging the friction brakes. I have no statistics on brake pad differences because we didn…
With a manual car, it was common to downshift and use the engine to decelerate. I’m wondering if electric vehicles might actually cause a return to a third pedal to re-add some of the fine tuned controls that a manual transmission allowed. Maybe the “downshift” could engage the regen brake specifically.
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With a manual car, it was common to downshift and use the engine to decelerate. I’m wondering if electric vehicles might actually cause a return to a third pedal to re-add some of the fine tuned controls that a manual transmission allowed. Maybe the “downshift” could engage the regen brake specifically.
I used to do that with a vintage 70's sportscar… later learned that it was pretty bad for the long-term life of the transmission so had to train myself out of it.
For DIY EV conversions (I built some cars) you usually hook up the "regenerate braking" to the brakelight switch. So as soon as you tap the brake pedal just a little, you start regenerating and see the amps flow back into the battery (I have a little display on my dashboard). Only when you press the pedal further, do you start engaging the friction brakes. I have no statistics on brake pad differences because we didn…
With a manual car, it was common to downshift and use the engine to decelerate. I’m wondering if electric vehicles might actually cause a return to a third pedal to re-add some of the fine tuned controls that a manual transmission allowed. Maybe the “downshift” could engage the regen brake specifically.
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I took it to be people that are far more aggressive with the gas pedal than they really need to be. That is, it was more the heavy foot than it was letting off to brake. Regardless, your point stands. People that have gotten used to not directly using brakes to indicate you are slowing down is a dangerous thing with how reliant we are on the standard indications that you are slowing. All the more so if you need to ra…
> People that have gotten used to not directly using brakes to indicate you are slowing down is a dangerous thing with how reliant we are on the standard indications that you are slowing. Most, if not all, EVs will light up the brake lights when you're slowing via regen braking as long as the deceleration rate is above a certain threshold. I know my Tesla does.
Emergency brake systems probably help a lot with this problem, of course. Still seems wise to follow some of the older practices that we used to drill into people.
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> […] but there can also be a significant benefit from allowing the ICE to remain in the RPM "sweet spot" rather than moving around a larger range. Which is why I'm surprised electric cars with range extenders aren't a bigger thing: * https://en.wikipedia.org/wiki/Range_extender Have the powertrain be all-electric, and have a battery pack, but for those with range anxiety have a small generator as an option that woul…
Range anxiety seems to go away after your first week of EV driving.
I've had my BEV for about 5 1/2 years. My first road trip (Portland -> Santa Clara, ~560 miles each way), I planned it out ahead of time with ABRP. These days, I'll just let the nav figure it out.
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This is less a hybrid thing and more a new transmission thing. It, of course, isn't free. The efficiency of a CVT is a good 10-20 percent lower than previous transmissions. That said, currently, the win from keeping the engine at either the max power or the max efficiency speed is substantial. There are some really good videos out there going over how newer CVTs work. Looks like some people are working on ones that a…
I have a Subaru (ten years old w/ >200k miles on it's chain-type CVT), and I thought the justification for it was that it was more efficient than previous systems. From a mechanical engineering standpoint, the Subaru CVT uses a fairly conventional lock-up torque converter at the input, but that gets locked as you pass something like 15-20 mph (once the lowest gear ratio is satisfactory w/o the torque converter functi…
The videos online that look at various CVT systems is truly an amazing resource that I regret not having when I was younger. :D
You can get similar results with proper deceleration, engine braking and downshifting. I’ve had brake pads last 110k miles (with room for 20k+ more), even though I lived in moderate hilly area. That’s probably 1/3 the brake dust, and comparable to an EV . If you are getting lower MPG than the EPA rating, you are also burning up your brakes from heavy deceleration. Improve your MPG to 15% over EPA and your brakes will…
Upvoted for making sense of basic physics. Another factor is speed.
After a bit you learn how much you can slow down with it and (for me at least) it becomes a bit of a game to see if you can avoid using the mechanical brakes by choosing early enough to lift your foot.
As a result, the mechanical brakes get squeezed on every trip, but nearly all uses are during low speed maneuvering. If a light changes at the last moment or someone pulls out in front of me I will then have to make a substantial use of the mechanical brakes but that doesn't happen on every trip.
I never have to ride the brakes down a long hill, and it was really satisfying the one time I went down a hill long enough to see the battery state of charge increase by a percent or two.
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> it changes everything It changes nothing. People buy cars to drive them. > Also this article does not take into account recycling of batteries which is way dirty that recycling ICEs. I'm sorry you can't be bothered to read your own link. This is in the footnotes as a source for it: Erik Emilsson and Lisbeth Dahllöf. "Lithium-ion vehicle battery production: Status 2019 on energy use, CO2 emissions, use of metals, pr…
'People buy cars to drive them' : how long did you own your last EV car ? enough to pass the limit for the EV to become interesting ? You think all Tesla & BYD owners do that ? Don't think so ! So in the end your ownership (and 95% of the other) of an EV was more CO2 intensive than equivalent ICE because you don't keep it enough to become efficient. And don't talk about second hand use because this is clearly not the…
Again, I reference your source:
"Yet when the MIT study calculated a comparison in which EVs lasted only 90,000 miles on the road rather than 180,000 miles, they remained 15 percent better than a hybrid and far better than a gas car."
Both of my cars have 100k+ miles on them, with plenty of life left. Modern vehicles seem to do 200-300k miles regularly.
I am not an outlier: https://www.reuters.com/business/autos-transportation/americ...
"The average age of U.S. cars and light trucks this year rose to a record 12.6 years, according to the report by S&P Global Mobility on Wednesday, up by two months from 2023."
The average American drives 12k miles a year.
I'm not sure why you zeroed in on a source that openly debunks all of your arguments, but I do appreciate the assist.