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hroussel

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Some context to the range here. Hopefully this isn't too confusing.

The EQS that Kyle tested got like 344 miles with a 107kwh pack. The R1T has 125kwh usable. And we know the EQS has a drag coefficient of 0.2, which is literally the best for a production car

Adjusting for battery size the EQS would go about 398 miles with a 125 kwh pack. OR have a drag coefficient of about 0.28 to get 290 miles if range on a 125kwh pack. Now, remember force = cross sectional area * drag coefficient.

Remember, the R1T is a much larger vehicle in cross section, and is a truck with what should be a higher drag coefficient as well. So it just points to how good this result is for the R1T. It seems uniquely slippery and efficient for a truck. I'll be really interested to see how the F150 Lightning does at speed.
I've seen a 0.30 drag coefficient mentioned in another thread on this forum. Not sure if this is official. Still makes the R1T result very impressive.
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SeaGeo

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I've seen a 0.30 drag coefficient mentioned in another thread on this forum. Not sure if this is official. Still makes the R1T result very impressive.
Yeah, it's a best guess as far as I can tell. Which speaks to how efficient it is elsewhere. It's bigger and less aerodynamic than the EQS. That 290 number is really impressive. Especially with ATs.
 

hroussel

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I'm guessing the 22s will clip that 300 mile mark. They should have less rolling resistance. The other nice thing is the GOM seems pretty accurate.
With the 21s the EPA range is 314 miles (and 316 for the R1S I have ordered). So let's round it to 310 miles (~500km) in that 70mph test. That's a very impressive number to me and beyond what I was expecting.
 

SeaGeo

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With the 21s the EPA range is 314 miles (and 316 for the R1S I have ordered). So let's round it to 310 miles (~500km) in that 70mph test. That's a very impressive number to me and beyond what I was expecting.
I've heard someone mention the R1T GOM spits out something like 340 miles when you have the 21s and go to conserve mode... it was really accurate for Kyle, I'll be curious to see how it does with those.
 

SeaGeo

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I would like to see a 'all purpose mode' at 80 mph test as well as that is the way I'll drive my Rivian most of the time.

Going by my own experience in the EVs I've had, anything over 75 really starts to eat into the battery. On a decent day, at 80 mph on the interstate, my Model 3 performance gets a real world 200 miles of a full range charge (which is rated around 312 miles).

I would guess 314 miles on range mode on the R1T is probably 200 miles going 80 down a interstate on a non winter type day as well.
Drag is a function of the square of velocity. Assuming all of your energy goes to drag (it doesnt) you would conservatively expect a out 220 miles of range at 80 on the 20s assuming 290 miles at 70mph.

70 to 80 would be about a 24% reduction.

70 to 65 would be a 15% increase (or less).
 

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zefram47

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That's just above 2 mile/kWh in pretty excellent conditions which is, again, a fine/good/acceptable number for the size of the R1T but not outstanding.
You're nuts. It's a pickup truck with a massive frontal area. You can't legitimately compare it to something like the EV6, Model 3/Y, or even your Taycan. They are vastly different classes of vehicle. A more valid comparison will be against the Hummer EV truck, which we'll start seeing next month, or the F-150 Lightning. But initial numbers I've seen suggest the Rivian will be a good bit more efficient. Your Taycan is inefficient AF for a sedan.
 
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DB-EV

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Thank you for this distilled version. Saved me from another OOS video that is twice as long as it needs to be.

Sorry to be the whiner here as the nerd in me appreciates the effort, but the bloviating and need for editing seem to overtake the actual facts presented.
If you like having the number you should think about playing the video, even if in the background. If the people who can get the truck and do the test can't get support, then it is possible there won't be those people doing the test over time.
 

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Thank you for this distilled version. Saved me from another OOS video that is twice as long as it needs to be.

Sorry to be the whiner here as the nerd in me appreciates the effort, but the bloviating and need for editing seem to overtake the actual facts presented.
If you like having the number you should think about playing the video, even if in the background. If the people who can get the truck and do the test can't get support, then it is possible there won't be those people doing the test over time.
 

DB-EV

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Drag is a function of the square of velocity. Assuming all of your energy goes to drag (it doesnt) you would conservatively expect a out 220 miles of range at 80 on the 20s assuming 290 miles at 70mph.

70 to 80 would be about a 24% reduction.

70 to 65 would be a 15% increase (or less).
On my trip to the Adirondacks their is an option to take 55 mph hwy about 2/3 of the way that is more of straight line than the 65 mph highway. Will be taking that with the R1s going in range of 65 potentially. Thanks for noting the range increase from 5 mph slower.
 

SeaGeo

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On my trip to the Adirondacks their is an option to take 55 mph hwy about 2/3 of the way that is more of straight line than the 65 mph highway. Will be taking that with the R1s going in range of 65 potentially. Thanks for noting the range increase from 5 mph slower.
For sure. It's an easy check of x^2/y^2. Just realize that the assumption in this is that drag is the cause of all of your energy consumption. Which obviously isn't the case, especially at lower speeds. So the difference will be less, and it will be less accurate as speed reduces.
 

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Riventures

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Considering my Audi E-tron gets about 2.18mi/kWh in the 70mph range test versus 2.32mi/kWh for the Rivian with off-road tires, I'm very impressed. The R1S will be replacing our E-tron and the extra range will be a big improvement. The Audi only has 86.5kWh of usable capacity versus the R1S has 125kWh (according to Kyle's test).

Charging speed is the only thing they need to improve.
I am not sure how you did your test, but during my "regular" drive between 70-75 mph that is ~32 miles, with tailwind I get 3.2-3.3 mi/kWh, and with headwinds, I get 2.7-2.8 mi/kWh.

Regardless, I think that most people are now getting used to the idea of having a usable range in their vehicles between 200 to 250 miles per charge to 80%, or 85% with R1T. That is a sign of the growing acceptance of EVs in general. I think R1T did well in this range test, but I think that charging speed is practically more important than the ultimate range, at least for daily use of the vehicles.
 

hroussel

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I am not sure how you did your test, but during my "regular" drive between 70-75 mph that is ~32 miles, with tailwind I get 3.2-3.3 mi/kWh, and with headwinds, I get 2.7-2.8 mi/kWh.

Regardless, I think that most people are now getting used to the idea of having a usable range in their vehicles between 200 to 250 miles per charge to 80%, or 85% with R1T. That is a sign of the growing acceptance of EVs in general. I think R1T did well in this range test, but I think that charging speed is practically more important than the ultimate range, at least for daily use of the vehicles.
From your sig you have the e-tron GT. He was talking about the e-tron 55.
 

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I hope he misspoke in the video. He stated that he set the tire pressure to 38 rather than the 48 that I believe is the spec.
Later on he says 48, so I think the initial was a mistake.

Also, for those complaining that the videos are too long, just watch at 1.5x or 2x speed. Problem solved.
 

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And what a contrast with the POJ Jaguar I-Pace which is the same starting price, has pretty below-average acceleration, is pretty darn tiny by comparison, and is a half-ton lighter but still only gets the same wh/mile as the R1T (and only 195 miles of range).

https://insideevs.com/reviews/574524/jaguar-ipace-70mph-range-test/
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