More Tech Info on Gravity

[hmp10]

The article form the Society of Automotive Engineers has some technical information on the Gravity that I have not yet seen (unless my eyes glazed over in the long powertrain review Kyle Conner did with Emad Dlala and his team recently). In particular, although I knew the motors for the Gravity had been reworked, I did not realize the extent:

"At the core of the Gravity is the updated motor. Emad Dlala, Lucid's senior vice president of powertrain, told SAE Media that the new motors have received significant improvements in reducing drive unit noise by doubling the isolation and skewing the internal rotor., which has a new rotor architecture than what's found on the Lucid Air. This includes Lucid using what it learned from the high-performance Sapphire trim level to improve thermal performance by adjusting the winding of the stator. The automaker even swapped out the magnets, for again, better thermal performance and higher efficiency."

It seems they really like the vehicle overall.

https://www.sae.org/news/2025/05/lucid-gravity-first-drive

 

[Udon1122]

Is the new motor techs apply to both GT and DE?

 

[joec]

The more I read about Gravity, the more a refresh of Air sooner rather than later makes sense to me. it would have to be cheaper to move both platforms to this new motor design.

 

[Adnillien]

The more I read about Gravity, the more a refresh of Air sooner rather than later makes sense to me. it would have to be cheaper to move both platforms to this new motor design.

I believe the 2025 Air has the improve motor that like Gravity but still with different mounts so the sound isolation does not match Gravity.

 

[hmp10]

A Gravity video by the German magazine "Auto Bild" mentioned that the Gravity has a 600hp rear motor and a 228hp front motor (7:50). I assume someone at Lucid must have given him these figures? But that spread sounds a little extreme to me.

Now that we know the Gravity Dream will use the rear motor of the GT as the front motor of the Dream, that means the Dream motors total 1200 horsepower. Perhaps the rated 1,070 hp of the Dream results from battery current limits, something that the 828hp GT doesn't encounter?

Any help from some of the forum engineers here?

 

[borski]

A Gravity video by the German magazine "Auto Bild" mentioned that the Gravity has a 600hp rear motor and a 228hp front motor (7:50). I assume someone at Lucid must have given him these figures? But that spread sounds a little extreme to me.

Now that we know the Gravity Dream will use the rear motor of the GT as the front motor of the Dream, that means the Dream motors total 1200 horsepower. Perhaps the rated 1,070 hp of the Dream results from battery current limits, something that the 828hp GT doesn't encounter?

Any help from some of the forum engineers here?

Reminder that Lucid has a habit of under promising HP and overdelivering.

 

[tomclaussen]

Many members have expressed issues related to software not acting as intended in the Gravity. Having been a longtime (40+ years) large scale systems integrator, I went looking for information on how the Gravity is architected. https://www.theautopian.com/the-luc...ig-luxury-electric-suv-you-can-buy-right-now/ This article does an outstanding job of describing the Lucid Gravity implementation. For those of us familiar with multi-cpu architectures, Lucids use of the NIVIDIA Orin SoC, (You will need to scroll down to the middle or so of the article to find the details though.) Is following a trend in the industry. I can see where software integration, with even this reduced hardware set, is still going to be a challenge, specifically where robustness and reduction of single point-of-failures is concerned.

 

[johnse]

I was also surprised that the Qualcomm SoC used for the infotainment system is actually running multiple virtual machines with purpose-chosen operating systems. Only one of them is running Android Automotive.

 

[tomclaussen]

I'm wondering if some of the phantom bugs being reported where the car needs to "sleep" for a bit is not the result of trying to run a pair of processors/process's in lock step. The article I referenced talks about if an error occurs the process is suspended for a bit....

 

[tomclaussen]

So for the real die-hard tech nerds out there....

 

[RandomDesign]

Die hard tech nerd enough to not care about whatever slop AI search results vomit out honestly.

 

[DrK]

Here Here. Not understanding a thing about this went to my gurus in the field ( MIT & Carnegie Mellon).

AI summary dismissed.

No alarm or concern with this ‘attributed’ architecture even if accurate.

 

[tomclaussen]

Guys I'm not dissing the car or the tech. Plus the AI search results some find BS are pretty accurate in this case. I only used them as an example because most folks are not going to dig thru several hundred pages of results at multiple sites to get the same summary. But if you don't care so be it.

 

[knewman]

Many members have expressed issues related to software not acting as intended in the Gravity. Having been a longtime (40+ years) large scale systems integrator, I went looking for information on how the Gravity is architected. https://www.theautopian.com/the-luc...ig-luxury-electric-suv-you-can-buy-right-now/ This article does an outstanding job of describing the Lucid Gravity implementation. For those of us familiar with multi-cpu architectures, Lucids use of the NIVIDIA Orin SoC, (You will need to scroll down to the middle or so of the article to find the details though.) Is following a trend in the industry. I can see where software integration, with even this reduced hardware set, is still going to be a challenge, specifically where robustness and reduction of single point-of-failures is concerned.

I'd been curious for a while about what SoC they'd gone with, thanks for posting that article!

 

[DrK]

Forgive me. I was not intending to insult anyone. I truly just did not know what that meant. The only problem with information sometimes is that while accurate it may not actually represent choices that should be faulted. In this case Lucid has not made bad choices to have different vendors and differing computer languages operating them.

On the other hand Lucid has chosen vendors that don’t always deliver.

For example two days ago navigating in downtown Chicago I did not curse Lucid, I lamented the Germans of HERE who somehow have failed to comprehend that Chicago streets downtown can have two or even three levels. I was driving north on Michigan Avenue ( the #1 street in Chicago for over a century). The direction audio and map wanted be to turn left ( west) on Grand. Mmm. Grand passes under Michigan Ave at street surface level. Not only is there no intersection, there are buildings lining the street. In fact lower Michigan begins the south side of Grand. Worse still, if one wants to avoid Michigan traffic by turning off of Michigan , 99% of the time one would turn right (east) to go to Lake Shore Drive which would bypass all the rest of northbound Michigan Ave.

Maybe we should ask some of our group members to volunteer to entertain some HERE executives with a list of local HERE navigation whoopsies? Or ask Lucid to make it easy for us to flag erroneous guidances in real time, so that Lucid can get them to correct and maybe refund.

CarPlay really needs to be prioritized!

Then we choose the vendor.

 

[borski]

Grand passes under Michigan Ave at street surface level. Not only is there no intersection, there are buildings lining the street. In fact lower Michigan begins the south side of Grand. Worse still, if one wants to avoid Michigan traffic by turning off of Michigan , 99% of the time one would turn right (east) to go to Lake Shore Drive which would bypass all the rest of northbound Michigan Ave.

I hear you and I have to add that while Chicago is a beautiful city, driving within it is an exercise in absolute absurdity, lol. I rented a car there once and reconsidered my life choices at like every random street I needed to be on that was somehow simultaneously above and below the road I was actually on, at all times.

Google Maps literally just gave up once and said I was at my destination and then crashed. I wasn’t at my destination. Lol.

 

[hmp10]

For example two days ago navigating in downtown Chicago I did not curse Lucid, I lamented the Germans of HERE who somehow have failed to comprehend that Chicago streets downtown can have two or even three levels.

I've lived in Los Angeles, New York City, Chicago, Cincinnati, and Berlin. I also do a lot of driving in Miami. Driving in Chicago was a piece of cake.

Give Miami a try, especially on the Airport, Dolphin, or Don Shula Expressways where I've never used a navigation system that didn't get confused about which level you are on:

Or Los Angeles:

 

[DrK]

I hear you and I have to add that while Chicago is a beautiful city, driving within it is an exercise in absolute absurdity, lol. I rented a car there once and reconsidered my life choices at like every random street I needed to be on that was somehow simultaneously above and below the road I was actually on, at all times.

Google Maps literally just gave up once and said I was at my destination and then crashed. I wasn’t at my destination. Lol.

You must come to visit now. Cultural entities don’t have the scale of NYC but in quality rank there. Restaurants also ( just don’t listen to most crowd sourced ratings? Weather is mild compared to 1980’s and lakefront gorgeous for swimming boating etc. can even swim in Chicago River. As to getting around: both Google Maps and Waze independently give level directions AND route lower to shorten trips when appropriate. HERE is over a decade behind. ( I have not checked Apple Maps, Mapquest, etc) and many many free EV chargers albeit level 2.

 

[hmp10]

You must come to visit now. Cultural entities don’t have the scale of NYC but in quality rank there. Restaurants also . . . .

Couldn't agree more. I lived there almost 8 years and found it the most livable large city I'd ever experienced. Superb art, music, and theater. Some of the best cuisine in the world in terms of scope and quality. Fascinating architecture spanning the Art and Crafts movement through to the post modern.

Speaking of Chicago music, the recent road trip we took to Atlanta in the ill-starred Gravity was, in part, to attend a performance by Andrew Bird, a superbly innovative Chicago singer/songwriter, with the Atlanta Symphony. Their joint rendition of "Pulaski at Night" almost brought tears to our eyes.