• 0 Posts
  • 112 Comments
Joined 1 year ago
cake
Cake day: July 11th, 2023

help-circle












  • Interesting thing about gasoline engines, they become more and less efficient when the temperature drops.

    They become more efficient because the air being brought into the engine is denser and cooler which is better, but they become less efficient because rubber parts become stiffer, lubricant becomes harder to move, and overall everything is tougher to deal with.

    One result is that if you drive long ranges in -40C, your fuel economy is relatively similar to what it would be in warmer weather. You can blast the heat and your vehicle is toasty warm since it’s just moving waste heat around. I’ve done such drives many times since resources are not where people tend to be.

    As you approach -40 you’ll probably want to have your block heater plugged in overnight on a gasoline engine, but generally speaking you can get pretty cold and have the motor turn over just fine. I drove a diesel for a while in the far north and going back to a (really crappy) gas engine was surprising for how easy it was to just get up and go in really cold weather.


  • EV performance in -40C is something nobody talks about but I’m extremely interested in.

    There have been lots of videos of Teslas leaving a heated garage then flying around a snowy track in Norway, but that’s much different than getting in a car that’s soaked in the cold all night, driving it to work, then driving home after it sits all day. Or even better, taking that same cold soaked car and driving to the next city 13 hours away with only one or two places to stop along the way.




  • sj_zero@lotide.fbxl.nettoScience Memes@mander.xyzpoggers
    link
    fedilink
    arrow-up
    5
    arrow-down
    2
    ·
    11 months ago

    It’s just a matter of breaking the problem down Into an easier problem or set of problems.

    All the additions are interchangable, so you could choose to add 1+2+3+4 or 4+1+2+3 and then 4+1=5 and 2+3=5 and then youve got 5+5 which is easy its 10. So you go ok you can do the conversion with 1 and 50 except it’s still tough mental math so you say 1 and 100 to get 101 100 times, but that’s twice too big so you slap it in half and you get the answer. It’s solving a tough problem by splitting it into problems that aren’t as tough.

    The first step is knowing what tools you have in your belt. The second is knowing how they work in detail. The third part is the inspiration of using them in a way that solves a difficult problem.

    I’m not a mathematician, but I’ve found interesting solutions to problems like this before, and it’s fun when you understand your tools and understand the problem and it all comes together to find a solution nobody else would have.



  • I feel like this whole article is based on a false premise.

    Go to a dealership right now, and try to find any new truck for $36,000. On paper you might be able to get the lowest base model, but in reality good luck with that.

    I just checked the dealership near me, and the lowest price for a new vehicle of any kind is 39,400CAD or about 28,000USD. The lowest priced new truck is 66,500CDN, or about 49,300USD.

    That’s just what the world looks like now thanks to inflation. And that’s not a vehicle using expensive battery technology, and that’s not a vehicle made out of expensive, difficult to manufacture with stainless steel, it’s just the cheapest standard truck at the dealership.

    Really, it looks like the cybertruck is about bang on with prices for other EV trucks that aren’t made out of entirely stainless steel. Considering that Tesla isn’t a budget brand, that doesn’t seem unreasonable. Nobody at Tesla is psychic, they couldn’t have predicted super high inflation sparked in part due to policies enacted due to a global pandemic, so of course prices rose.