Alright, here's a summary of all of the technical shit that was wrong with the presentation tonight. $TSLAQ, please feel free to chime in on anything I miss or get wrong. Guys like @CoverDrive12, @ex_Tesla, and I instantly see all the issues with the bullshit idea that
was proposed tonight. This is never going to fucking happen. He should have been more patient and held out for the electric skate concept that he originally sold people on. Something that the car just simply sits on top of. That way, the energy being used to transport the vehicle
is used efficiently and isn't lost to the drag coefficient of a big SUV body. Plus with a skate, you could pull energy from the grid as necessary. That's actually a sellable idea/conjob in SV. But no. He had to fucking rush and push out this bullshit concept to the public of
transforming a road-going EV to a railcar. As @ex_Tesla correctly guessed, the major problem with the range/efficiency of a large vehicle rapidly traversing a tight tunnel is pressure differential. Google it if you have to. But air (atmosphere) has mass. Mass needs to be
displaced. When you're in a tight confined area, that mass has nowhere to go and the pressure differential is exaggerated because of it. Think of it like a plug inside of a tube; the plug travels down the tube and the pressure increases exponentially in front of it since the
air mass has nowhere to go. And in this case, you also have the air mass creating extra drag and pressure on the sides of the vehicle, creating all kinds of unaccountable anomalies and inefficiencies. This will dramatically reduce the potential range of any EV using such a
system. And as auto manufacturing experts like @CoverDrive12 and @phoennix10 will point out, adding the necessary components of motorized, retractable rail guides is a massive cost. We're talking about very high strength components, motors, gearboxes, sensor arrays, and
precision, wearable components that will need to be maintained and replaced on a regular basis. And as those same people also know, you run into a litany of issues with such components, not the least of which is first and second order vibrations. Here's a brief study guide on
what is referred to as "NVH" (noise, vibration, harshness) in the auto world. fabione63.it/doc/861503%20N…
Every time you add an extra pivot point and component to unsprung weight on a vehicle, you add the potential for MORE first and second order vibrations. It's just the name of the
Every time you add an extra pivot point and component to unsprung weight on a vehicle, you add the potential for MORE first and second order vibrations. It's just the name of the
game. Of course, Elon didn't account for any of this. Which is why in the opening of the presentation tonight, that Model X was going maybe 45mph, tops. That track has to be perfectly level and flush to accommodate those kinds of ambitions. There is zero margin for error. There
will be no "150 mile per hour" anything if the tracks are not completely and perfectly level. We're talking glass here. Not horseshoes and hand grenades. Because the other thing that happens at high speeds is tire vibration and heat. If the tires are subject to high speed
NVH, the sidewalls get hot, and the tire explodes. Anyone who owns a trailer and has experienced a failed wheel bearing will tell you this. Anyways, that's my story and I'm sticking to it unless the laws of physics change tomorrow. @elonmusk GFYS you fat, drug addled con man.
Technical self-correction: The skate would still be subject to the drag coefficient of the vehicle it's attached to. But if it was directly in contact with the track, it would be significantly more efficient than a rubber tire.
