• 2 Posts
  • 19 Comments
Joined 1 year ago
cake
Cake day: October 23rd, 2023

help-circle
  • Is ad hominem your plan here or do you not understand why it’s bad to increase fossil fuel use when we need to be reducing it ASAP? I don’t drive that much, and I try to drive efficiently when I do. I also advocate for moving away from car centricity because of how wasteful it is. Do you?

    This is literally a supplier wanting to foster demand for their product regardless of the external impact (in this case, additional environmental pollution all for the sake of profit). This is not something to be celebrated.



  • Remember that Consumer Reports weights infotainment and electronic issues the same as engine or transmission problems.

    They literally do not do this.

    From their site:

    Engine major, engine cooling, transmission major, drive system, electric motor and EV battery problems are more likely to take a car out of service and to be more expensive to repair than the other problem areas. Consequently, we weight these areas more heavily in our calculations of model year overall reliability verdict. Problems such as broken trim and in-car electronics have a much smaller weight. Problems in any area can be an expense and a bother, though, so we report them all in the reliability history charts.





  • While software can be used to manage traction it will always be reactive in a way mechanical lockers aren’t. The reason a locker is so good for offroading is because the wheels spin at the same speeds, preventing power “leaking out of the system” via wheelslip because the grip of every other locked wheel prevents a single low-traction wheel from slipping.

    Independently powered wheels don’t have the proactive traction-management of mechanical lockers and thus are limited to reactive traction-management. That’s not to say independent motors can’t be extremely effective off-road, but mechanical-lockers will be more capable in serious offroading. The physical connection of mechanical lockers work in real-time.


  • A virtual locker doesn’t work as well as a physical locker offroad because there’s no leverage limiting wheelslip. In a mechanical locker you only get wheelspin when grip is low enough for both wheels to spin, while a virtual locker will get wheelspin when the grip of one tire is surpassed. Per-wheel motors lack this leverage too, making them not as good as a physical locker. A system with mechanical lockers on both axles with a locked center-differential does even better because you’ll only get wheelspin if all four wheels lose traction.



  • While you could have an all-wheel drive system with a transfer-case/center-differential in an EV, it would have worse performance in most scenarios coupled with much higher losses. By minimizing the amount of parts the electric motor(s) have to spin, you reduce losses and improve efficiency.

    Needing to package drive shafts throughout the length of the car eats into passenger room too, that’s why so many ICE cars have rear transmission-tunnels.

    The one scenario I can think of where a center-differential/transfer-case would fare better is with lockers in an off-road situation.









  • I’ve already been primed to buy a Maverick, but if I can get essentially the same truck with Yota reliability, that’s amazing!

    While I’m not sure about the rest of the vehicle, the hybrid version of the Maverick should be pretty reliable. It uses a 2.5L I4 originally designed by Mazda nearly 20 years ago (Mazda L-Series, and an E-CVT (design licensed from Toyota). I wouldn’t trust the 2.0T Maverick to be the same, but Ford’s 2.5L I4 e-CVT Hybrid drivetrain has been in a bunch of their cars for awhile now and is reliable.

    So, I went looking for pics and specs. Lo and behold, there’s a goddamn iPad on the dash. That one single “feature” kills the whole thing. I’d never, ever buy one (or any other vehicle, for that matter) as long as they have one of these ugly, dangerous, stupid screens sticking up from the dash.

    1. All Toyota has shown is a concept, a cool concept for sure, but a concept. It could look similar if brought to production, or completely different.

    2. Have you driven a car with a big screen slapped on the dash? It’s not all bad. Having a big screen for navigation is pretty handy, You don’t need to spend as much time looking away from the road because the navigation directions are physically larger. I’m not a fan of physical buttons being replaced with touch screens either, but some things are easier to use through a touchscreen (like Android Auto/Carplay), and it’s possible to have big screens and buttons.



  • You can’t convince me EV is the future.

    It’s pretty obvious that EVs are the future, not only from an engineering standpoint (vastly more efficient & simpler), but also from looking at what other large regions are doing. EVs are getting super popular in China, with rapid growth also seen in Europe.

    I for one travel from Minnesota to Florida, I can do it straight through in 26 hours. You can’t do that with an EV vehicle.

    Your scenario is quite the edge case, and something that would be better suited to train or plane transportation.

    Even then it’s not any better for the planet, you’re just stripping different resources.

    This is incorrect https://www.epa.gov/greenvehicles/electric-vehicle-myths

    On top of all of this, your battery will maybe last 10 years?

    Most batteries are expected to last double that, and every Eevee in the US is required to have at least an 8-year/100K mile battery warranty… no automaker is going to be stupid enough to sell a car with such an expensive part that might break before the warranty ends. A bunch of cars have longer warranties than that as well, even Mercedes gives the EQS a 10-year (155K mile) battery warranty. Batteries should generally last as long as most equivalent combustion drivetrains in modern EVs.

    Let’s hope hydrogen becomes viable one day

    For physics reasons it won’t. Hydrogen fuel-cell cars are less efficient than direct electrification via a battery, and as a result cost way more per mile.