121–130 of 273 posts
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The efficiency of electrical resistance heating is exactly the same whether you use motor coil resistance or resistance wire. However, they simplify their system design a little (fewer contactors, fewer wires, fewer components to buy/test)
It's not the same if you generate the heat outside and bring it inside, though. I don't know enough about where the fan is located to know if that's what you mean, but that would be different.
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The fan is triggered by a relay, triggered by the ECU, which uses coolant sensors (the thermostat sensor that is iirc not always the mechanical thermostat) to adjust when to cool the radiator. That temp is much higher than the ambient air will ever get, so if the fan comes on after the car is turned off then either it was just about at the temp that would have turned on the fan, or something could be slowly going wro…
Car engines heat up when you park, because the air cooling and circulation of the coolant keeps it cooler while driving. It seems completely within the common laws of physics that when you are at not so uncommon temperatures, the coolant closer to the engine heats up well above standard operating temperatures once the car is off, and then convection currents bring enough of this overheated coolant to the sensor to tr…
A further reason is no movement = no wind speed. I used to have an old Pontiac grand am with the ram air. I had overheating issues sometimes that were literally solved by going faster.
I give it to them that Cabin Noise during Acceleration with Ludicrous Enabled is a nice touch.
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No need to make it illegal. The laws just need to be fixed to stop making it mandatory, and every automaker will drop it immediately.
The mandatory noise maker is an important pedestrian safety feature. It helps you avoid getting hit by cars. It's also only required at low speeds (and at higher speeds it wouldn't matter anyways due to tire noise dominating).
This one is pretty cool and definitely surprised me. > Motor Humming or Whirring when Navigating to a Supercharger … > In some circumstances (such as cold weather), it is normal for the motor(s) and components to make noise, such as humming or whirring as it generates heat to warm the Battery. Super cool that the motors can be used for things other than moving the vehicle. It reminds me of how ESCs for RC vehicles us…
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Props to the person/team owning docs at Tesla. This made Tesla as a brand more humane in my book.
This is the kinda good natured fun that I really liked Tesla for before they announced an armored vehicle that's designed in a way to increase the likelihood of accidentally running over your kids playing in the driveway.
I also don’t like it, but it’s not Tesla’s fault that that’s where the market is. I’ve heard from so many foolish people who don’t understand physics that they feel safer driving a big heavy vehicle and being up high.
The armor has nothing to do with the height and sight lines; it’s also not anything specific to the Cybertruck. Even midsize SUVs now are so high up and boxy that you can’t see in front of the front bumper. I was in an Escalade or Expedition or Tahoe or something the other day on the way to JFK and noticed that the center console screen has an option to view a front-bumper-cam. It’s nuts.
If this is truly a problem that needs affirmative fixing, it seems that auto industry regulation (which is already mandating cellular transceivers in vehicles, so it is definitely in scope) would be the place to address this. Expecting market participants to kneecap themselves in the face of clear market demand (especially whilst already fighting the risky and uphill battle that is EV adoption) is not fair or realistic.
IMO it could be covered in giant sharp stainless steel hedgehog spikes and be nicknamed the Childslayer and it’s probably still less dangerous to our society than something that burns petrochemicals. If you want to regulate something for safety, ban the sale of gasoline/diesel and the use of internal combustion engines.
But when they are supercharging they are both ridiculously loud. Like having AC on full bore. Also starting a charge makes the most bangs and pops, regardless of the charger type.
I just finished a 2000km drive and slept in the back on a sleeping mat. Sometimes I parked right next to the highway where trucks were flying past. It was almost silent inside, they really are well insulated from external noise.
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The fan is triggered by a relay, triggered by the ECU, which uses coolant sensors (the thermostat sensor that is iirc not always the mechanical thermostat) to adjust when to cool the radiator. That temp is much higher than the ambient air will ever get, so if the fan comes on after the car is turned off then either it was just about at the temp that would have turned on the fan, or something could be slowly going wro…
I don’t think this is true - this is completely normal behaviour. The cooling fan is coming on due to a phenomenon called heat soak which is where the engine temperature increases above normal for a time after it has been switched off due to the lack of coolant flow. The fan is coming on to aid cooling the engine/engine bay to reduce the effect of heat soak. With carburettor fed engines it is sometimes advised by the…
Today I learned. The Tesla owner's manual has alt descriptions for its images. They're not good alt descriptions, but they are there. In fact, it is one of the most screen reader accessible manuals for any device I've ever seen, most are some weird PDF abominations where all the button names are replaced by their unlabeled icons. Even devices made specifically for the blind have these issues sometimes. This? This is…
It has really excellent voice commands for pretty much any function though. Sadly it can only be triggered by pressing the right scroll wheel on the wheel. While possible to just reach over, it's probably not optimal for your suggested use case.
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It's not the same if you generate the heat outside and bring it inside, though. I don't know enough about where the fan is located to know if that's what you mean, but that would be different.
Logically you'd keep as many parts as possible inside, where the temperature is easier to control?
Don’t know if this is considered during installation?