Gravity Dream Edition Performance

[Bobby]

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.

Have you driven the Gravity and R1S? Or is this hearsay?

 

[californiaboy935]

Have you driven the Gravity and R1S? Or is this hearsay?

Hearsay I’m guessing. Sounds like it’s from the YouTube video. (No attribution)

 

[Elfin]

Have you driven the Gravity and R1S? Or is this hearsay?

 

[Bobby]

Hearsay I’m guessing. Sounds like it’s from the YouTube video. (No attribution)

Yes, I've seen the video. My concern is posts that sound like personal, first-hand observations. If they are not, they should be properly attributed. There are people on this forum making real-world buying decisions and therefore should be aware of the source of information.

Perhaps beginning posts with "I read that..." or "A saw a video where..." would be more transparent.

 

[californiaboy935]

@Bobby this one

 

[californiaboy935]

Yes, I've seen the video. My concern is posts that sound like personal, first-hand observations. If they are not, they should be properly attributed. There are people on this forum making rear world buying decisions and therefore should be aware of the source of information.

Agree

 

[037]

Have you driven the Gravity and R1S? Or is this hearsay?

I test drove a GT and pretty sure was the first non magazine independent tester for acceleration, posted on page 1.

I did not drive the R1S but I have drag raced enough years to be able to read the data.

 

[Elfin]

I don't trust first-hand observations about objective automotive performance at all.
Give me instrumented testing!

 

[037]

I don't trust first-hand observations about objective automotive performance at all.

I share data, do what you must.

 

[037]

Skewed, and unaccredited… with a dash of hearsay. Ripe for a reporter to spin into a story for the clicks.

View attachment 30647

Sometimes you need to stop for a breath.

The performance data was mine, sharing data means it could be used for education or something stupid, always.

 

[hmp10]

I'm not quite getting the hostility here. I watched the Hagerty drag race video -- several times -- but am very glad to have someone with personal experience of drag racing help me understand some of the factors that may have produced the result. For instance, I was confused by the Cammisa video's lack of clarity as to just how much of the Rivian's flagging toward the end was the result of the speed limiter beginning to kick in or also of other characteristics of the car's gearing or power and torque curves. It was very interesting to have that explained a bit more on this thread.

So what if the explanation was based in part on data collected by someone other than the poster? Data is data, and as long as there is no reason to suspect the integrity of the data itself, I'm very appreciative of having someone with more knowledge of this area throw a personal interpretive light on it from their own drag racing experience even if they have not raced the exact cars in this race.

I never once thought that someone posting here conducted or was claiming to have conducted the same race with the same cars in the video, as I think that was adequately clear from the context of the discussion.

 

[Elfin]

Elfin just messing around, Dragy is as accurate as track data.

Yes, I count Dragy as instrumented data!

When are you going to get someone's Dream Edition to measure?

 

[037]

Yes, I count Dragy as instrumented data!

When are you going to get someone's Dream Edition to measure?

Since I don’t have a Dream on order I am stuck waiting for someone to do it. Hagerty went first with their video, I am hoping Car and Driver does a full test as well.

Until then, someone like @borski, who promised to run a Dragy but maybe forgot, would need to run it.

I have a GT on order and at the moment do not live next to someone with a DE or I would make the trip to measure.

When I do get the GT I will be posting more data and lessons learned.

 

[borski]

Since I don’t have a Dream on order I am stuck waiting for someone to do it. Hagerty went first with their video, I am hoping Car and Driver does a full test as well.

Until then, someone like @borski, who promised to run a Dragy but maybe forgot, would need to run it.

I have a GT on order and at the moment do not live next to someone with a DE or I would make the trip to measure.

When I do get the GT I will be posting more data and lessons learned.

Once I get our car back from PPF

 

[borski]

Isn't the hardware between the GT and DE the same (i.e. same motors, same battery packs)?

No. The DE has a different front motor (same as the rear motor); the GT has a smaller front motor.

 

[037]

No. The DE has a different front motor (same as the rear motor); the GT has a smaller front motor.

According to Eric the battery for DE is different too…it was dark, he was chewing, I may have misheard, or maybe he was never there is this is a secret.

 

[Elfin]

According to Eric the battery for DE is different too…it was dark, he was chewing, I may have misheard, or maybe he was never there is this is a secret.

Someone needs to drop their pack and look at the part number. LOL.
I hope Lucid becomes a mass market car company with an online parts catalog.

 

[borski]

According to Eric the battery for DE is different too…it was dark, he was chewing, I may have misheard, or maybe he was never there is this is a secret.

Well, we can actually check that. If someone with a GT checks their battery type on testmycode.cc I can check our DE

 

[hmp10]

According to Eric the battery for DE is different too…it was dark, he was chewing, I may have misheard, or maybe he was never there is this is a secret.

Meaning physically different cells or the same cells with different BMS or other programming?

 

[037]

Meaning physically different cells or the same cells with different BMS or other programming?

Sounded like different hardware at the time, I could be imagining the whole thing.

If there is an easy way to verify, I would go with that…