Steer-by-wire standard on the 2024 Cybertruck?

[Mini2nut]

I think Tesla is going to surprise everyone by making steer-by-wire standard on the upcoming CT. Tesla has had 3+ years to design, engineer and validate the new system. Toyota will be offering it soon on their small SUV.

I found a great video explains the redundant systems that are employed to ensure safety. It’s very similar to aircraft design.

 

[OneLapper]

I'd bet that the CT will have steer by wire.

Firstly, the 48vdc system allows good steer by wire reaction time. Lexus has introduced steer by wire but it's "laggy" in quick inputs. I think the steering will be next level on the CT.

Secondly, we've seen proof of it in video already. There's a cell phone video of the CT inside GigaTexas, making slow maneuvers, it's plain as day that the wheels are turning side to side much too quickly. The person inside would be cranking the wheel as hard as he could to make the wheel turn that quickly

And the latest Twitter video of the CT on the road, turning right, then swerving back and forth within the lane. No doubts someone given the opportunity to drive it around the block and decided to try out the steering.

Lastly, we know the rear steering is by wire, and it's proportional. Again, the videos we can see the rear wheels turning smoothly and in sync with the front wheels.

If the rear is steer by wire, why not make the front steer by wire too?

 

[flowerlandfilms]

I agree. Steer by Wire just fits into this concept for a vehicle.

 

[HAL GALLUS]

I'd bet that the CT will have steer by wire.

Firstly, the 48vdc system allows good steer by wire reaction time. Lexus has introduced steer by wire but it's "laggy" in quick inputs. I think the steering will be next level on the CT.

Secondly, we've seen proof of it in video already. There's a cell phone video of the CT inside GigaTexas, making slow maneuvers, it's plain as day that the wheels are turning side to side much too quickly. The person inside would be cranking the wheel as hard as he could to make the wheel turn that quickly

And the latest Twitter video of the CT on the road, turning right, then swerving back and forth within the lane. No doubts someone given the opportunity to drive it around the block and decided to try out the steering.

Lastly, we know the rear steering is by wire, and it's proportional. Again, the videos we can see the rear wheels turning smoothly and in sync with the front wheels.

If the rear is steer by wire, why not make the front steer by wire too?

Agree

 

[Bill906]

I'd bet that the CT will have steer by wire.

Firstly, the 48vdc system allows good steer by wire reaction time. Lexus has introduced steer by wire but it's "laggy" in quick inputs. I think the steering will be next level on the CT.

Secondly, we've seen proof of it in video already. There's a cell phone video of the CT inside GigaTexas, making slow maneuvers, it's plain as day that the wheels are turning side to side much too quickly. The person inside would be cranking the wheel as hard as he could to make the wheel turn that quickly

And the latest Twitter video of the CT on the road, turning right, then swerving back and forth within the lane. No doubts someone given the opportunity to drive it around the block and decided to try out the steering.

Lastly, we know the rear steering is by wire, and it's proportional. Again, the videos we can see the rear wheels turning smoothly and in sync with the front wheels.

If the rear is steer by wire, why not make the front steer by wire too?

Supply voltage has no effect on response or reaction time. If anything, it would be supply power. I don’t think Lexus’s slow reaction time was a power issue. I suspect it was more of a control (processing) issue. I was surprised at how apparent the slow reaction time was in the video and suspect the issue is because it’s a prototype. I expect (hope) their production version is much better.

I still think the CT will be mechanical direct steering for the front wheels. I understand the benefits of steer by wire, I like the idea, I just don’t think the CT will have it. I could be wrong. Many people have commented on the video with the fast steering movement of the front tires and pointed to that as evidence of steer by wire. It‘s just as likely the same steering servos all current Tesla’s have for auto pilot was doing steering. Either in a development mode, maybe auto parking, or possibly smart summons.

I believe Elon once said there wouldn’t be steer by wire on the CT. But I admit any argumeant that starts with “Elon said…” doesn’t have the weight it should.

 

[SolarWizard]

I’m betting steer AND brake by wire are part in the CT

 

[ituner-HF]

I'd bet that the CT will have steer by wire.

Firstly, the 48vdc system allows good steer by wire reaction time. Lexus has introduced steer by wire but it's "laggy" in quick inputs. I think the steering will be next level on the CT.

Secondly, we've seen proof of it in video already. There's a cell phone video of the CT inside GigaTexas, making slow maneuvers, it's plain as day that the wheels are turning side to side much too quickly. The person inside would be cranking the wheel as hard as he could to make the wheel turn that quickly

And the latest Twitter video of the CT on the road, turning right, then swerving back and forth within the lane. No doubts someone given the opportunity to drive it around the block and decided to try out the steering.

Lastly, we know the rear steering is by wire, and it's proportional. Again, the videos we can see the rear wheels turning smoothly and in sync with the front wheels.

If the rear is steer by wire, why not make the front steer by wire too?

Spot on. A power steering assist unit is usually rated at 1-3HP, I bet cybertruck is 3HP. That's like 2400watts. At 12V that would be like 200A, which is a bit too much. At 48V that would be 50A. Probably the CT battery is rated at 50Ah (~2kwH) with 1C charing from HV battery steering won't even dent the battery. While 2Kwh might seem extreme, keep in mind that this 48V energy is used for steering, computers, lights, etc. So shifting capacity from HV pack to the 48V pack might not sound as crazy.

 

[JesseDGreat]

I think Tesla is going to surprise everyone by making steer-by-wire standard on the upcoming CT. Tesla has had 3+ years to design, engineer and validate the new system. Toyota will be offering it soon on their small SUV.

I found a great video explains the redundant systems that are employed to ensure safety. It’s very similar to aircraft design.

Wait....so I though it was standard on all CTs? Are you saying that only FOUNDATION series has steer by WIre?

 

[mongo]

Wait....so I though it was standard on all CTs? Are you saying that only FOUNDATION series has steer by WIre?

That post is over a year old, before the release of Cybertruck. They all have steer by wire.

 

[JesseDGreat]

That post is over a year old, before the release of Cybertruck. They all have steer by wire.

Damn I feel dumb

 

[mongo]

Damn I feel dumb

No need for that, trips us all up now and then. Especially when the month/ day is reasonable.