Rivian performance claim vs reality, for the 0-100mph.

[hroussel]

Just read an article on Motortrend about the R1T (https://www.motortrend.com/news/2021-rivian-r1t-pros-and-cons-review/).

For the first time I saw a 0-100mph number posted. 8.1 sec with the 21" tires, 8.2 sec for the all terrain.

I seem to remember when the R1T/S were unveiled, the spec was 7 sec for the 0-100mph.

Yet the 0.60mph is almost spot on. Is it possible Rivian is holding back the power after a certain amount of time, like what was found in the Mach-e GT recently?

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[SANZC02]

Just read an article on Motortrend about the R1T (https://www.motortrend.com/news/2021-rivian-r1t-pros-and-cons-review/).

For the first time I saw a 0-100mph number posted. 8.1 sec with the 21" tires, 8.2 sec for the all terrain.

I seem to remember when the R1T/S were unveiled, the spec was 7 sec for the 0-100mph.

Yet the 0.60mph is almost spot on. Is it possible Rivian is holding back the power after a certain amount of time, like what was found in the Mach-e GT recently?

Does not look like they tested with the 22s. Those are supposed to be the tires with the best acceleration numbers.

 

[CGM55082]

Just read an article on Motortrend about the R1T (https://www.motortrend.com/news/2021-rivian-r1t-pros-and-cons-review/).

For the first time I saw a 0-100mph number posted. 8.1 sec with the 21" tires, 8.2 sec for the all terrain.

I seem to remember when the R1T/S were unveiled, the spec was 7 sec for the 0-100mph.

Yet the 0.60mph is almost spot on. Is it possible Rivian is holding back the power after a certain amount of time, like what was found in the Mach-e GT recently?

Just did a First Mile test drive yesterday. To me it feels like there's some strange throttle mapping going on. For instance, to me 0-60 for the first 30 felt sluggish (in relative terms) and then you can feel the truck pull exponentially harder from 30-60. It almost feels like a turbo kicking in on a combustion engine. As a Model 3 owner, it felt strange to me because the 3 feels linear in its acceleration. Might be something I would get used to, but my initial take was that it felt a little odd.

A friend and fellow Rivian orderer asked me what my thoughts were after test driving. I told him that I know it sounds weird to say, but it felt like an electric truck. The point being, my frame of reference is a Model 3, so I assumed that's largely how all EVs would feel like. The R1T felt solid, substantial and heavy, sort of like a truck (go figure). The Model 3 by comparison feels light and snappy like a fighter jet. The R1T feels more like an absurdly fast tank.

 

[BigE]

Just did a First Mile test drive yesterday. To me it feels like there's some strange throttle mapping going on. For instance, to me 0-60 for the first 30 felt sluggish (in relative terms) and then you can feel the truck pull exponentially harder from 30-60. It almost feels like a turbo kicking in on a combustion engine. As a Model 3 owner, it felt strange to me because the 3 feels linear in its acceleration. Might be something I would get used to, but my initial take was that it felt a little odd.

A friend and fellow Rivian orderer asked me what my thoughts were after test driving. I told him that I know it sounds weird to say, but it felt like an electric truck. The point being, my frame of reference is a Model 3, so I assumed that's largely how all EVs would feel like. The R1T felt solid, substantial and heavy, sort of like a truck (go figure). The Model 3 by comparison feels light and snappy like a fighter jet. The R1T feels more like an absurdly fast tank.

Your experience sounds like what many others are describing as far as the initial 0-30 ish mph feeling a bit sluggish or being held back? My guess is that whichever tire package, all options are only 275 mm wide tires, not exceptionally wide for the power and torque of the R1T. So my guess is Rivian is limiting power initially to get better traction and get this 7,000+ lbs moving and then upping power once underway?

 

[kurtlikevonnegut]

Your experience sounds like what many others are describing as far as the initial 0-30 ish mph feeling a bit sluggish or being held back? My guess is that whichever tire package, all options are only 275 mm wide tires, not exceptionally wide for the power and torque of the R1T. So my guess is Rivian is limiting power initially to get better traction and get this 7,000+ lbs moving and then upping power once underway?

Agree on traction control. I think they have tweaked it at the low range of the launch to limit power output to limit slipping and prevent you from destroying your tires every time you hit the gas from a stop.

 

[ajdelange]

In the early part of an acceleration run the power consumed is very low. This is called the "torque limited region" because the motor(s) is(are) producing much less than maxiumum power. Torque limitation in the early parts of the run would, I guess, be imposed to keep slip within the linear part of the torque/slip curve.

 

[SANZC02]

Just did a First Mile test drive yesterday. To me it feels like there's some strange throttle mapping going on. For instance, to me 0-60 for the first 30 felt sluggish (in relative terms) and then you can feel the truck pull exponentially harder from 30-60. It almost feels like a turbo kicking in on a combustion engine. As a Model 3 owner, it felt strange to me because the 3 feels linear in its acceleration. Might be something I would get used to, but my initial take was that it felt a little odd.

A friend and fellow Rivian orderer asked me what my thoughts were after test driving. I told him that I know it sounds weird to say, but it felt like an electric truck. The point being, my frame of reference is a Model 3, so I assumed that's largely how all EVs would feel like. The R1T felt solid, substantial and heavy, sort of like a truck (go figure). The Model 3 by comparison feels light and snappy like a fighter jet. The R1T feels more like an absurdly fast tank.

If you just did the drive at Agua Dolce then that was most likely because the tires were dirty from the off-road portion of the drive so traction was impacted.

I did the drive last Tuesday when it was a little damp and you could really feel the traction control working to get the truck moving.

My Model S feels similar when road conditions are iffy.

 

[CGM55082]

If you just did the drive at Agua Dolce then that was most likely because the tires were dirty from the off-road portion of the drive so traction was impacted.

I did the drive last Tuesday when it was a little damp and you could really feel the traction control working to get the truck moving.

My Model S feels similar when road conditions are iffy.

That's a great point that I hadn't considered. That could very well have been what I was feeling.

 

[Interferon]

Just did a First Mile test drive yesterday. To me it feels like there's some strange throttle mapping going on. For instance, to me 0-60 for the first 30 felt sluggish (in relative terms) and then you can feel the truck pull exponentially harder from 30-60. It almost feels like a turbo kicking in on a combustion engine. As a Model 3 owner, it felt strange to me because the 3 feels linear in its acceleration. Might be something I would get used to, but my initial take was that it felt a little odd.

A friend and fellow Rivian orderer asked me what my thoughts were after test driving. I told him that I know it sounds weird to say, but it felt like an electric truck. The point being, my frame of reference is a Model 3, so I assumed that's largely how all EVs would feel like. The R1T felt solid, substantial and heavy, sort of like a truck (go figure). The Model 3 by comparison feels light and snappy like a fighter jet. The R1T feels more like an absurdly fast tank.

They are probably still tweaking the torque limiting and traction control code. Tesla was releasing updates to the motor controllers for years to improve performance after initial launch.
There is probably a lot more art than science to tune it just right.

 

[RideAlong]

In the early part of an acceleration run the power consumed is very low. This is called the "torque limited region" because the motor(s) is(are) producing much less than maxiumum power. Torque limitation in the early parts of the run would, I guess, be imposed to keep slip within the linear part of the torque/slip curve.

this , and in/town drivability issues.

 

[jtshaw]

FWIW, I didn’t feel any sluggishness off the line in my test drive in Seattle. It was a rain free day and the acceleration felt pretty linear to me. It’s definitely way heavier than my Tesla but felt as quick or quicker in a straight line. It feels like an absolute rocket ship compared to my old Tacoma!

 

[Eager2own]

. It feels like an absolute rocket ship compared to my old Tacoma!

In all fairness, you could’ve said the same thing after test driving a Sentra.

 

[jtshaw]

In all fairness, you could’ve said the same thing after test driving a Sentra.

True I should add my Tacoma is a 2002 with the TRD Off Road package and AT tires. The 3 long throw shifts of the manual transmission required to get to 60 alone take more than 3 seconds

 

[DuckTruck]

I've ridden in various 911 configurations and several high-end Corvette's. None of those felt as strong or linear in acceleration than the R1T I drove in Normal this past Summer. Google Earth shows Rivian's test track straightaways to be about 6/10th of a mile long. Going 0-130-0 down the straights without losing grip or making any discernible noise impressed the Hell out of me. It clocked in at about 0-60 in 3 seconds and 0-80 in about 4 seconds. At no point in that series of runs, twists, turns, and rock crawling did the R1T ever feel less than completely compsed.

This sprint run happened less than two miles after slipping and sliding through their dirt and rock drift course. Therefore, the tires weren't pampered before we took to the track. Even so, these things were still faster than I'll ever need for any of my excursions. If anyone ever needs to go faster, be advised that the Pirelli's will not withstand the spikestrips employed to bring you to justice.
? ? ?

 

[hroussel]

Just adding to my own post here as I found the following test data for an Audi RS Q8 (on Car and Driver website),

C/D TEST RESULTS
60 mph: 3.2 sec
100 mph: 8.1 sec
1/4-Mile: 11.6 sec @ 119 mph

So, an identical 0-100mph time as the R1T with the 21 in tires. And identical 1/4 mile time (still with the 21 in tires). But the trap speed has a huge difference. The Audi gaining 19mph in that 3.5 sec, to the 10mph for the R1T.

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