Gravity GT - acceleration data (Dragy measured)

[037]

Hello,

I have been trying to get Borski to measure GT performance and I have failed. Instead everyone had to wait a good 6 months for me to go on a test drive on the day before last.

0-30 my Lincoln is as fast or faster because someone made Gravity real gentle…and after 30…things get real (and yes, I used launch control)

I will be posting a little more data in my FB group simply because uploading is easier and I can go back and fix spelling mistakes as far back as I want….

Facebook

www.facebook.com

Borski, you can still redeem your self and run a proper 1/8 or 1/4 mile, and a 70-0 braking test, something the person next to me discouraged me from doing. He was a good sport otherwise as I was testing the Gravity as it was the first EV I ever drove and the 3rd time I was inside an EV…

 

[037]

Visited the NY test drive event today, got the full 20 minutes, only had to use two 20 minute slots to get it but who’s counting.

Basic take away:

1. The side mirrors are really small compared to my Aviator, like half size
2. The accelerator pedal is stiff compared to the Aviator, like someone decided that to get 800hp one must really really want them. Lincoln has a much softer throttle but then again it was meant to be 400hp vehicle
3. I went and tried and tried again the 3rd row, the pull to get the back dropped wasn’t working super consistent but I got it down, then you grab the handle and guide into the floor. From the floor use the handle to raise, if you aim towards back seats it gets heavy and then catapults you into the headliner, to avoid that, pull it towards the rear of the vehicle and then the spring will guide it forward, make sure it clicks and then pull string to get the back up, otherwise the whole thing will come down…I spent a lot of time doing this
4. The music worked well, none of the left ear missing sound stuff, I didn’t listen very long but enough to know it works much better now
5. As I got going I felt the blind spot screens were useless as I wasn’t getting information as fast as I wanted on the highway, a quick glance is faster. Looking down, focusing on the screen, it’s just not practical. Also, if window shades are up in 2nd row the blind spot is practically impossible to see. The pillars forward and rear are giant so it will take time to get used to.
6. Really liked that 3rd row headrests can be folded from front seat, my Lincoln doesn’t let me do that
7. The 22/23 was in the low setting for my entire test drive, and I went over some broken pavement and the ride was excellent, I heard the bumps but felt a small rumble, figured that would ride harsher and was pleasantly surprised they did not
8. I did not notice much wind noise even up to 90 as I had the music turned down very low, concentrating on not crashing the first EV I ever drove
9. Acceleration is nothing special 0-30mph and I think that’s done on purpose, this is a family vehicle after all. Past 30 this thing is no joke.
10. I walked away with the last speed form, sorry not sorry

 

[037]

A few photos

 

[borski]

Hello,

I have been trying to get Borski to measure GT performance and I have failed. Instead everyone had to wait a good 6 months for me to go on a test drive on the day before last.

0-30 my Lincoln is as fast or faster because someone made Gravity real gentle…and after 30…things get real (and yes, I used launch control)

I will be posting a little more data in my FB group simply because uploading is easier and I can go back and fix spelling mistakes as far back as I want….

Facebook

www.facebook.com

Borski, you can still redeem your self and run a proper 1/8 or 1/4 mile, and a 70-0 braking test, something the person next to me discouraged me from doing. He was a good sport otherwise as I was testing the Gravity as it was the first EV I ever drove and the 3rd time I was inside an EV…

I’ll do it in the DE. In the meantime, leave Borski alone! <3

 

[niceInBoston]

someone made Gravity real gentle…and after 30…things get real (and yes, I used launch control)

Thanks for the timings and for the detailed test drive review! I will have to remember to try checking my blindspot in various ways when I do a test drive.

Does anyone have thoughts or theories on why it might be “gentle” from 0-30? I can’t imagine they would limit its power in launch mode. Perhaps it’s the weight of the car, or limit of the tires?

 

[037]

Thanks for the timings and for the detailed test drive review! I will have to remember to try checking my blindspot in various ways when I do a test drive.

Does anyone have thoughts or theories on why it might be “gentle” from 0-30? I can’t imagine they would limit its power in launch mode. Perhaps it’s the weight of the car, or limit of the tires?

They are definitely limiting power, the surface was random and not super grippy, no tire spin that I can notice at all. Launch control was used so this is exactly working as designed.

They do quote 3.4 to 60 after all and with a slight downhill it went 3.2 with 2 adults inside.

All quoted times include the 1ft roll out as all car magazines.

 

[Elfin]

They are definitely limiting power, the surface was random and not super grippy, no tire spin that I can notice at all. Launch control was used so this is exactly working as designed.

They do quote 3.4 to 60 after all and with a slight downhill it went 3.2 with 2 adults inside.

All quoted times include the 1ft roll out as all car magazines.

That's just the way single gear EVs accelerate, constant torque and then constant horsepower (with some rolloff at very high speed.)
As can be seen on the g force line it's nowhere close to breaking traction. It feels like it accelerates faster above 30 because it keeps accelerating at the same rate whereas your Lincoln needs to upshift. For some reason there is a myth that EVs accelerate fast off the line, it's not really true (I'm saying that if you took an ICE vehicle with a 0-60 of 3.5s it would be much faster off the line.)

 

[DeaneG]

Lucid applies temporal filtering to the accelerator position depending on the mode chosen (smooth, swift, sprint). It's noticeable compared to say a Model 3 performance, which has comparatively little throttle filtering (compared to Lucid's smooth mode at least) and so feels kidney-jiggling quicker at initial tip-in. Our Volvo EV has more throttle filtering and approaches the throttle lag of an ICE vehicle, relatively sedate and nonchallenging though it still manages under 4.5 seconds 0-60.

 

[TahoeMichael]

It'd be interesting to see how the acceleration graph changes with the same test done across all the different driving modes. That said, I can't imagine not being happy with this kind of 0-60 time. The Gravity achieves 60 mph in less than half the time of my current vehicle. My Highlander certainly doesn't feel like a sports car, but it's also not disappointing. Maybe this is a sign that I've gotten old.

 

[Elfin]

It'd be interesting to see how the acceleration graph changes with the same test done across all the different driving modes. That said, I can't imagine not being happy with this kind of 0-60 time. The Gravity achieves 60 mph in less than half the time of my current vehicle. My Highlander certainly doesn't feel like a sports car, but it's also not disappointing. Maybe this is a sign that I've gotten old.

Doesn't look like draggy is accurate enough to measure differences in "jerk" (the rate of change of acceleration) and it probably wouldn't make much difference in acceleration times (though it might make it feel faster.)

 

[037]

Doesn't look like draggy is accurate enough to measure differences in "jerk" (the rate of change of acceleration) and it probably wouldn't make much difference in acceleration times (though it might make it feel faster.)

Dragy is track accurate.

 

[Elfin]

Dragy is track accurate.

Yeah but it's not accurate for the third derivative of track accurate.
speed = distance/time
acceleration = distance/time^2
jerk = distance/time^3
You can see that the acceleration data of drag is already super noisy, the car is not actually oscillating between 0.7g and 0.8g.

Jerk is how long the acceleration takes to ramp up. I'm saying that how fast the car reaches 0.8g acceleration would make the car feel quicker but wouldn't actually make it much quicker.
Here's an example of Dragy from an ICE vehicle with similar 0-60. Looks like they got a terrible launch but it's still faster than the Gravity from 0-40 but slower from 40-60.

 

[9point81]

The GGT does 0-60 faster than my Taycan 4S. And the DE is only going to be even better....what a crazy time to be alive!

 

[Elfin]

The GGT does 0-60 faster than my Taycan 4S. And the DE is only going to be even better....what a crazy time to be alive!

Really doesn’t look like the dream edition is going to be much faster to 60 unless they increased the torque and word is that they didn’t. If they maintain the same torque as the GT all the way to 60mph it looks like it will be about 3.2s.
Totally acceptable acceleration for a 7 seater. Lol.

 

[9point81]

Really doesn’t look like the dream edition is going to be much faster to 60 unless they increased the torque and word is that they didn’t. If they maintain the same torque as the GT all the way to 60mph it looks like it will be about 3.2s.
Totally acceptable acceleration for a 7 seater. Lol.

I have drag raced a lot. A tenth of a second is a huge thing as that's a full car length in the 1/4. Someone on here mentioned 3.1, but we'll have to wait and see what draggy numbers say. I plan on taking mine to the drag strip at least once to get the papers and see what a prepped surface does (tho I don't really expect much difference as those tires on the GT at least were not slipping in anyone's accounts). More often than not, that 200hp (even without torque gains), with the same contact patch bc the tires and wheels are the same, would be expected to gain a few tenths of a second. I am VERY good with having a 3 row SUV that will be able to give 3 second 0-60 acceleration! Going to shock a lot of these Slomaro and Rustang boys out here in Bama when this SUV leaves them both standing stupid at the light!

 

[037]

Yeah but it's not accurate for the third derivative of track accurate.
speed = distance/time
acceleration = distance/time^2
jerk = distance/time^3
You can see that the acceleration data of drag is already super noisy, the car is not actually oscillating between 0.7g and 0.8g.
View attachment 29339
Jerk is how long the acceleration takes to ramp up. I'm saying that how fast the car reaches 0.8g acceleration would make the car feel quicker but wouldn't actually make it much quicker.
Here's an example of Dragy from an ICE vehicle with similar 0-60. Looks like they got a terrible launch but it's still faster than the Gravity from 0-40 but slower from 40-60.
View attachment 29340

Not sure what you do for a living but I have over 100 track passes and Dragy is accurate to less than 1/10th difference to track time, the data is good.

 

[Elfin]

Not sure what you do for a living but I have over 100 track passes and Dragy is accurate to less than 1/10th difference to track time, the data is good.

I'm not questioning Dragy's accuracy for measuring 1/4 mile or 0-60 times. There was speculation that the drive modes would change how fast the car goes from 0 acceleration to max acceleration. I was saying that the Dragy can't measure that because it can't even measure g forces accurately (look at how wavy the g force line is!).

I have drag raced a lot. A tenth of a second is a huge thing as that's a full car length in the 1/4. Someone on here mentioned 3.1, but we'll have to wait and see what draggy numbers say. I plan on taking mine to the drag strip at least once to get the papers and see what a prepped surface does (tho I don't really expect much difference as those tires on the GT at least were not slipping in anyone's accounts). More often than not, that 200hp (even without torque gains), with the same contact patch bc the tires and wheels are the same, would be expected to gain a few tenths of a second. I am VERY good with having a 3 row SUV that will be able to give 3 second 0-60 acceleration! Going to shock a lot of these Slomaro and Rustang boys out here in Bama when this SUV leaves them both standing stupid at the light!

Yeah, the DE will be much quicker (with a much higher trap speed) over the quarter mile! Just saying it won't be much quicker to 60 unless they increase the torque (because it's holding constant torque almost all the way 60mph.)
In an ICE vehicle extra HP without extra torque means you can hold a gear longer before you need to upshift (Horsepower = Torque x RPM / 5,252)

 

[037]

I'm not questioning Dragy's accuracy for measuring 1/4 mile or 0-60 times. There was speculation that the drive modes would change how fast the car goes from 0 acceleration to max acceleration. I was saying that the Dragy can't measure that because it can't even measure g forces accurately (look at how wavy the g force line is!).

Yeah, the DE will be much quicker (with a much higher trap speed) over the quarter mile! Just saying it won't be much quicker to 60 unless they increase the torque (because it's holding constant torque almost all the way 60mph.)
In an ICE vehicle extra HP without extra torque means you can hold a gear longer before you need to upshift (Horsepower = Torque x RPM / 5,252)

You are assuming Dragy can’t measure G forces or you can assume Gravity isn’t applying a constant force considering uneven non track surface.

Assumptions are not facts, a best guess.

 

[Elfin]

You are assuming Dragy can’t measure G forces or you can assume Gravity isn’t applying a constant force considering uneven non track surface.

Assumptions are not facts, a best guess.

You are correct that I am assuming that it can't produce clean data because I've never seen it produce clean data and I've seen a lot of Dragy plots.
They all look like this:

Also, they are clearly filtering it which would hide any changes in jerk anyway.
Again, this does not mean it can't produce accurate 0-60 or 1/4 miles times.

 

[037]

You are correct that I am assuming that it can't produce clean data because I've never seen it produce clean data and I've seen a lot of Dragy plots.
They all look like this:
View attachment 29342
Also, they are clearly filtering it which would hide any changes in jerk anyway.
Again, this does not mean it can't produce accurate 0-60 or 1/4 miles times.

It’s also possible the power is not constant and traction could be a limiting factor which forces the ups and downs.

Not sure what we are trying to prove here, Lucid claimed a 3.4 and with a slight downhill and two people it went 3.2 on unprepped surface.