Gravity Dream Edition Performance

[hmp10]

I thought that the Gravity Dream Edition, despite its 242 more horsepower, had the same maximum torque -- 909 ft-lbs in Launch Mode -- as the Gravity Grand Touring. But this "InsideEVS" article gives the Dream Edition torque as 1,107 ft-lbs.

I think Lucid itself was the source of the 909 figure, but I'm wondering if something changed on the way to final DE production. I thought it odd that the torque figures were identical, as the Dream uses the larger GT rear motor at both ends of the car. Any idea which is correct? (The Hagerty drag race video still gives the Gravity Dream torque as 909 ft-lbs.)

https://insideevs.com/news/765587/lucid-gravity-rivian-r1s-race/

 

[Elfin]

I thought that the Gravity Dream Edition, despite its 242 more horsepower, had the same maximum torque -- 909 ft-lbs in Launch Mode -- as the Gravity Grand Touring. But this "InsideEVS" article gives the Dream Edition torque as 1,107 ft-lbs.

I think Lucid itself was the source of the 909 figure, but I'm wondering if something changed on the way to final DE production. I thought it odd that the torque figures were identical, as the Dream uses the larger GT rear motor at both ends of the car. Any idea which is correct? (The Hagerty drag race video still gives the Gravity Dream torque as 909 ft-lbs.)

https://insideevs.com/news/765587/lucid-gravity-rivian-r1s-race/

0-60 of DE is 3.0s per Hagerty.
0-60 of GT is 3.2s with 1 foot rollout per Dragy results.
It seems very likely that torque is the same but rolls off at a higher speed on the DE.
Having the same torque as the GT allows them to use the same half shafts (axles). The Rivian Quad and Tesla Plaid both have half shaft problems...

 

[037]

0-60 of DE is 3.0s per Hagerty.
0-60 of GT is 3.2s with 1 foot rollout per Dragy results.
It seems very likely that torque is the same but rolls off at a higher speed on the DE.
Having the same torque as the GT allows them to use the same half shafts (axles). The Rivian Quad and Tesla Plaid both have half shaft problems...

Elfin, the Dragy result had a slope of just over 1%, and 2 adults in car, I can vouch for a 3.4s to 60 but 3.2 has not yet been confirmed with a valid run.

 

[Elfin]

Elfin, the Dragy result had a slope of just over 1%, and 2 adults in car, I can vouch for a 3.4s to 60 but 3.2 has not yet been confirmed with a valid run.

I was talking about the 1 foot rollout results. Not sure how much difference 1.8% downhill and extra person will make but they do counteract each other.
This is what I'm thinking, the 10mph splits are:
.50
.55
.56
.57
.60
.67
If it pulled as hard as the 30-40mph split all the way to 60mph then the 0-60(1ft) would be 3.1s, pretty close to the Hagerty number.
Anyway, would be interesting to see them side by side!

 

[037]

I was talking about the 1 foot rollout results. Not sure how much difference 1.8% downhill and extra person will make but they do counteract each other.
This is what I'm thinking, the 10mph splits are:
.50
.55
.56
.57
.60
.67
If it pulled as hard as the 30-40mph split all the way to 60mph then the 0-60(1ft) would be 3.1s, pretty close to the Hagerty number.
Anyway, would be interesting to see them side by side!

View attachment 30626

You want data, I can appreciate that

Let me know your thoughts on those Splits, GT on 22/23 for everyone who is just joining us from 5/30 New York test drive

 

[037]

Here is more data when not in launch control mode

 

[hmp10]

You guys lost me, but fascinating stuff, anyway.

 

[037]

You guys lost me, but fascinating stuff, anyway.

It shows acceleration splits, the time it takes to go 10-30, 20-40, 30-50. In seconds.

Gravity pulls as hard from 0-50 and slows down a bit by 70, most cars have their best acceleration by 30, talking production cars.

 

[037]

Here is 20-40mph, I like it because at this point most cars are not struggling for traction.

 

[037]

And my current Lincoln for comparison

 

[hmp10]

Here is 20-40mph, I like it because at this point most cars are not struggling for traction.

And my current Lincoln for comparison

I knew what the splits showed, but I just didn't have much context for what they really meant. This helps.

 

[037]

I knew what the splits showed, but I just didn't have much context for what they really meant. This helps.

Well then…it’s time to buy a Dragy and go test whatever you are driving :/)

 

[037]

I knew what the splits showed, but I just didn't have much context for what they really meant. This helps.

Technically you could just download the Dragy app and look at the leader boards, this way you can get a sense for stock times vs modified times vs magazine published times.

That would be free and pretty quick

Sample below

 

[037]

Here is a Sapphire

 

[Elfin]

Here is a Sapphire

That's what traction limited acceleration looks like! 0.64s 20-40mph time (that's 1.4g)

 

[TahoeMichael]

It shows acceleration splits, the time it takes to go 10-30, 20-40, 30-50. In seconds.

Gravity pulls as hard from 0-50 and slows down a bit by 70, most cars have their best acceleration by 30, talking production cars.

I'm not really a car performance nerd, so I'm not sure how to properly interpret the data. But I'm curious, the Hagerty drag race video said the Gravity really kicked in after 60 MPH. Do you see that in the draggy data? I'm unsure if what Hagerty was really saying is just that the R1S tapered off, and not that the Gravity improved.

 

[037]

I'm not really a car performance nerd, so I'm not sure how to properly interpret the data. But I'm curious, the Hagerty drag race video said the Gravity really kicked in after 60 MPH. Do you see that in the draggy data? I'm unsure if what Hagerty was really saying is just that the R1S tapered off, and not that the Gravity improved.

Gravity has a gentle launch, in relation to total power, once off the line the power stays on and doesn’t taper off rapidly.

R1S shoots off the line with the power from 4 motors, but it’s not geared for high speed so the power drops off and by the 130 max speed the Gravity eeks out the win while going 11mph faster.

They have similar power, it’s just applied differently, Gravity will be able to use it on a track like Nurburgring and R1S is mostly a straight line vehicle or off-road.

They are different purpose vehicles, but R1S does amazingly in 1/4 mile but Out of Spec says the brakes are not very good to stop 7,000 lb (with driver). Fairly small at 13.5” and 12.9” vs Gravity at 15.9 and 15.8” and from a big brand like Brembo while weighing 600+ lb less.

 

[Elfin]

I'm not really a car performance nerd, so I'm not sure how to properly interpret the data. But I'm curious, the Hagerty drag race video said the Gravity really kicked in after 60 MPH. Do you see that in the draggy data? I'm unsure if what Hagerty was really saying is just that the R1S tapered off, and not that the Gravity improved.

It feels that way if you're used to ICE vehicles. Every ICE vehicle accelerates more slowly when it shifts from 1st to 2nd. The Gravity keeps pulling which makes it feel like the acceleration "kicks in" even though it's not actually accelerating any quicker than it did at low speed.
When I got my Model 3 I noticed it wasn't all the fast off the line (compared to my Subaru) but it pulled really pulled hard at 45mph (because in the Subaru I would be in 2nd gear.)

 

[Ughwhy]

Isn't the hardware between the GT and DE the same (i.e. same motors, same battery packs)? If so, and we were talking ICE vehicles, we'd be discussing "engine tunes" to improve the performance. I suspect (but don't know) that Lucid is more gently applying the power at the start than is Rivian. It would be interesting to see what a more aggressive throttle mapping "tune" would do on the Gravity. I suspect that if you could give 100% available power and torque at launch, it would break traction on all four wheels. It would be fun to see.

The example in that video is the Range Rover and Audi; on paper the Ranger Rover should have won that battle. But its less aggressive shifting programing let the Audi ahead (probably for the benefit of longevity and safety).

---

Also, did you notice that he referred to the Gravity as an SUV, "Sport utility van"?

 

[Elfin]

Isn't the hardware between the GT and DE the same (i.e. same motors, same battery packs)? If so, and we were talking ICE vehicles, we'd be discussing "engine tunes" to improve the performance. I suspect (but don't know) that Lucid is more gently applying the power at the start than is Rivian. It would be interesting to see what a more aggressive throttle mapping "tune" would do on the Gravity. I suspect that if you could give 100% available power and torque at launch, it would break traction on all four wheels. It would be fun to see.

The example in that video is the Range Rover and Audi; on paper the Ranger Rover should have won that battle. But its less aggressive shifting programing let the Audi ahead (probably for the benefit of longevity and safety).

The GT has a smaller front motor. The DE has the GT rear motor in both the front and rear.
There are no other known differences.
If they gave the Gravity more torque it would probably need stronger axles. 100% power would be infinite torque at launch.