Electric RIVIAN R1T 'Truck of the Year'

[freebeard]

[?]

http://www.easternsurplus.net/Docume...0%20x%2020.jpg
[/?]

[Vman455]

Originally Posted by ksa8907

I mean... have they even produced one yet yet? Not sure how you can call it truck of the year if it's not even an actual product.

The factory is in the next town over from me. I happened to drive by it last month and all the lights were blazing at 6pm, so they're doing something. Electrek reported that production started in September.

Originally Posted by Hersbird

I think Rivian has delivered something like 60 trucks.

As of Dec. 15:

Our first consumer vehicles, the R1T and R1S, are our handshake with the world and the first step in building a relationship with our customers. In September, we delivered our first R1T. This was an emotional moment for our team who have poured its energy and soul into bringing this vehicle to life. As of December 15, 2021, we have produced 652 R1 vehicles and delivered 386 of those, including the production and sale of our first two R1S vehicles earlier this week.

[redpoint5]

The Dueler AT Revo looks cool enough in my opinion. I've got the older version of this on my truck, and it solved my problem of getting stuck in farm fields in 4x4.

[aerohead]

Originally Posted by Hersbird

I think Rivian has delivered something like 60 trucks.

The problem with the Cybertruck as shown is it was running 35" mud tires more aggressive than the Raptor wears and that's what takes it down to it's terrible MPG, a 20% penalty over a standard 3.5 F150 4x4. The 37" tire Rapor loses 2 more mpg highway over the 35" Raptor. If the Cybertruck try's to play that game it's going to never get the 500 mile range they were spinning.

These guys got .48 cd for the Cybertruck. Still without mirrors or wipers which it will have. https://airshaper.com/cases/tesla-cy...k-aerodynamics

I'm highly suspect of the airshaper numbers. And I don't know where the data cloud that they used for Cybertruck came from.
There are multi-view factory photos of Cybertruck, and it has very subtle body camber, both in elevation, and plan-view, which you can't discern without magnification and a straightedge comparison.
Bertone photographed a tufted 1970s concept in the wind tunnel, which bore the hard angularity of Cybertruck, with exceptionally good flow attachment.
Cybertruck's forebody, all the way to the center door gap, is in a favorable pressure gradient. Separation is virtually impossible.
Cybertruck's aft-body roof slope may be found to be at the drag and vortex minimum, at its 9-degree final slope.
Cybertruck's tires 'are' wide, and are MUD + SNOW, but they're totally shielded within the wheel-houses, except for the 8-inch ground clearance, and the wheels appear to be of low porosity and low windage.
And Cybertruck's air suspension may be calibrated for a degree of body inclination, nose down, tail up, which is favored for drag optimization.
The Dassault Exa Powerflow CFD that Tesla uses is commercial-grade, and Tesla's data is right from the AUTO CAD-CAM cloud which created the truck. For the time being, I'll defer to Tesla. If they say Cd 0.30, I'll go with that.
Closer to year's end we may find that Tesla has undersold and overdelivered on aerodynamics.

[hayden55]

Considering the rivian r1t weighs 7150lbs (bout 1.65 rangers) and is the size of a Ford Ranger with a narrower cab but longer, probably only because of the gear tunnel, it’s a damn tank! (Per edmunds)
They did note all range testing with all season tires.
I wanna see a range test with 11,000 pounds on it. Well maybe not let’s be honest nobody is gonna tow long range with it. More of a product to compete with other toy cars like land rovers etc...
For the most part I’m impressed to see a truck with a low drag coefficient and decently low frontal area.
Considering it has 4 electric motors it’ll be great off road as well at the ohv parks.
https://www.google.com/amp/s/www.edm...fficiency.html

[JSH]

Originally Posted by aerohead

I'll leave charging efficiency for a different examination ( no one speaks of well-to-wheel efficiency of ICE vehicles ).

EPA efficiency ratings include charging losses (Based on using the internal charger not DC fast charging)

Originally Posted by ksa8907

I mean... have they even produced one yet yet? Not sure how you can call it truck of the year if it's not even an actual product.

Rivian announced their 2021 production numbers yesterday (11-Jan-2022)

R1T, R1S, EDV production: 1,015
(including 12 R1T in Q3 and 1,003 total of all types in Q4)

R1T, R1S, EDV deliveries: 920
(including 11 R1T in Q3 and 909 total of all types in Q4)

[redpoint5]

Didn't know EPA figures included charging losses. Very good to know.

The Prius was something like 75% efficient charging L1, and 85% charging L2. Running the fans and electronics for half the time to charge seemed to make a big difference.

[JSH]

Originally Posted by redpoint5

Didn't know EPA figures included charging losses. Very good to know.

The Prius was something like 75% efficient charging L1, and 85% charging L2. Running the fans and electronics for half the time to charge seemed to make a big difference.

For the EPA test the battery is fully charged, sits overnight, and then they run it through the test cycles back to back until the battery is fully depleted. Then they charge it up using the manufacturer's EVSE that comes with the car and measure the kWh into the the EVSE for a full charge.

[redpoint5]

So my Prius is EPA rated with the crappy 120v EVSE. Seems crazy manufacturers would include 120v EVSEs standard knowing that negatively impacts their MPGe. I'd include a 240v EVSE with a 120v adapter.

Speaking of which, I'm currently modifying another Leaf EVSE to enable 240v charging as well as 120v. I bought adaptors for the 14-50p that will adapt it to 30 amp dryer outlets, or standard 120v outlets. I don't even own an EV!

Part of the mess I'm working on


Top one is completed, bottom is the work in progress

[JSH]

I bought a Wallbox Pulsar Plus from the dealer I bought the Bolt from. He was selling them for $500. I have it hardwired on a 30 Amp circuit left over from an electric hot water heater. It charges 4x faster than the EVSE that came with the Bolt which is plenty for my needs.

I have noticed that charging efficiency varies wildly based on conditions.



https://www.amazon.com/Pulsar-Level-...489316520&th=1