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It means where you put the steering wheel doesn't have to have a firewall penetration and mechanical linkage through to the engines. That's a lot of mechanical
by XorNot 3y ago
It means where you put the steering wheel doesn't have to have a firewall penetration and mechanical linkage through to the engines. That's a lot of mechanical joints which need to be continuous, and need greasing, sealing and have limits on relative angles between them that you don't need - as well as they have to have enough strength to transmit the forces involved.
By contrast, with steer-by-wire your system is essentially a black box you bolt on somewhere and then a more compact set of motors which can be coupled to the wheels at whatever is mechanically optimal.
The main reason not to do it is because your control systems need to be perfect. Conversely, above a certain vehicle mass, it's also not realistic to think that a human would be able to control the car anyway if the power steering failed, or that control system failures would still be devastating (i.e. if the power steering starts fighting you, you're going to lose).
- whelp_24 3y agoBig rigs used to not have power steering, i think with adrenaline you'll be able to steer. I do concede that the power steering fighting you would be bad
- bravetraveler 3y agoI just want feedback from the road, wires don't give me that
- kuhsaft 3y agoYou can absolutely get feedback from steer-by-wire. Ask any racing sim enthusiast. Those racing sim wheels can provide enough feedback to rip the wheel out of your hands.
- bravetraveler 3y agoThat "feedback" doesn't meet my poorly framed hyperbole. I'm intimately familiar as a driver; both in sims and Real Fast Cars. At what point does it go from feedback to lies? Some computer saying "yep, this is what's happening", if you're lucky. I'll yield that has been the trend for eons. That said, I don't want more of it. What lead to my first comment is the understanding that Tesla doing something where it's... different wires. Bus vs Ethernet or whatever. It sounds even more muted/numb. I don't want a real car to feel like a sim. It's getting harder to tell the difference for the wrong reasons. It's not that the simulators are closing the gap, but that the cars are becoming simulators. Lowering standards is definitely one way to meet them. Take your "we have feedback at home" and keep it I'm half joking through most of this, by the way. The problem is there but I'm deliberately overstating it
- kllrnohj 3y agoIt's important to keep in mind what the actual market for the vehicle is. It's not a sports car. Road feel is an anti-goal, it's undesirable in this market. Just like it's undesirable in the market for the Lexus - luxury SUVs. All you want here is some dynamic weighting for cornering loads and even then not that much of it.
- bravetraveler 3y agoYea, that's fair. Antithetical, these 'boats' are likely well served by not feeling as much I'd appreciate more feel in something basic like an Altima. Not even for remotely high performance situations I can already hear the road, I might as well feel it /s More importantly, how my tires are reacting to it. For something so underpowered they spin in the wet from a complete stop, something awful.
- toast0 3y agoIt's kind of nice to still be able to steer a car that is disabled and needs to be pushed around. Not always feasible depending on the disability, of course. Yes, tow trucks are great, but sometimes it's handy to push a car out of the way while waiting for a tow.