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These ratings are taken on a brake dynamometer with drag, rolling resistance, inertial and gravitational losses simulated through loads programmed in via the brake.
We don't really know that - do we? I think you can be sure Rivian reviewed the article before it was released. They did allow mention of the bent tie arm (or whatever it was).
Lot's of people tend to forget that a BEV and ice vehicle are subject to exactly the same laws of physics.
Same physics.
Not in a properly set up vehicle with 4 separate motors. As soon as slip over 0.1 is sensed the torque to a motor should be reduced. 0.1 applies to more usual surfaces but whatever the limit there is no point in increasing torque to a wheel if it increases slip beyond the break point.
I'm sure it is. Slipping in sand in response to a heavy foot is an area where it could evidently stand some improvement.
I am sure they are.
That would be nothing but the 137 mile estimate was for "off road". Her estimate in sand dunes was 30.
I have never driven in "stuck in snow" conditions but I have driven in rain which easily knocked my 300 EPA X back to 200 mi. It takes a lot of energy to push stuff out of the way of a wheel.
Although it may not be to your liking, it has a bed, it tows up to 11k lbs and storage area for tools. Sounds like a truck. this may not fit everyone's needs, just like a Tacoma may not be suitable to others lifestyles over an f250. Both are still trucks.
Thanks for that observation, Captain Obvious.
Torque isn't the only variable and there are scenarios that benefit from maintaining wheel speed for overall vehicle stability and performance (or sometimes just fun).
It has nothing to do with MY liking nor with any particular definition of what a truck is. It has to do with the demographic to which it is marketed. It's not really the "truck" market now is it? If you are looking for a "truck" the Rivian may not be the vehicle that you really want. If you are looking for a luxury vehicle in which to take your girlfriend out to your mountain cabin in comfort but still want to be able to tell your buddies you drive a "truck" then this is the "truck" for you. But if you are looking for something with which to run your lawn business or take to a job site on a daily basis it isn't. And the CT may not be either but it is closer i.e. more towing capacity and range, 240V @ 20 - 30 A in the bed, tougher finish...Thinking about it I can't decide which (Rivian or CT) would provoke more laughter at a job site.
I still wonder if it would have been a good idea (as they market it as an adventure vehicle) to have a manual locker between the motor pairs only needing software to manage front and rear speeds for some of the off road situation you may be in. I noticed the wheel slip when they released the video of them doing some light rock crawling a few months back.
And thrust is all that matters....
You're right that we (or I) don't know that for sure, but based on the interviews that Emme Hall has given in the past she seems to be a pretty straight shooter and it seems unlikely that she would let Rivian interject in her editorial process (or at least not by much). Just a hunch really, but I think a good one. On the other hand, the article didn't mention some of the other issues we know they had such as the bottoming out of the suspension on one of the whoops, causing damage to the wheel well, and/or some of the 12v electrical issues they had early on that the commentators mentioned in one of the Rebelle live videos. Perhaps she didn't mention those because in the end, as it was a prototype after all, they don't really speak to the overall quality of the vehicle.
