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NY_Rob

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Help an idiot with his math. If you’re doing 60mph at 2mi/kWh the onboard generator would need to be a 30kwh generator to keep up with demand?
The output may need to be 30kWh, but keep in mind that most equipment is not designed to run at 100% full output full time, so you may need a 40kWh (or larger) rated output generator to put out 30kWh more or less continuously. It will not be small... I can see a turbo 4cyl or a small V6 if they can fit it in there.

LOL since Scout is a VW brand, maybe they could resurrect the old 4cyl pancake Bug engine and stick it in the Scout 😄
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ThirteenElectrics

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Help an idiot with his math. If you’re doing 60mph at 2mi/kwh the onboard generator would need to be a 30kwh generator to keep up with demand?
BMW put a two cylinder motorcycle (scooter?) engine in the electric i3 for this purpose, and that’s a very small car. It slotted next to the electric rear motor. I used to have one, but that’s another story. Fun car to drive, but the BMW traction control was terrible on those wheels. Prone to flats, too, like many EVs.

I think 30kW is reasonable. Maybe 40. 35kW is only 47 horsepower, assuming 100% efficiency. I think a pretty small engine could do that.
 
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usulio

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So, did Rivian just enable a direct competitor, Scout, with their SDV deal with VW? They must really have been desperate, or they just got played. Yes, most car companies compete in many different markets, but this is a brand dedicated to offroad EVs. Sounds familiar. Jeep and Daimler are dedicating a model or two, too, but it’s not the whole enchilada. Or maybe every manufacturer will have an off road EV soon, so Rivian couldn’t have done better?

I’m an armchair quarterback, but I would have raised in the public markets rather than lose a competitive advantage (if indeed it was any kind of advantage at all; I am skeptical). What moat does Rivian have now? Terrible nav.? That’s not unique to Rivian. :)
.
Lot of assumptions here,
* Scout will release somewhere close to 2027
* Scout will release somewhere close to stated price
* Scout will release somewhere close to stated specs
* Scout will release at all

A potential R1 competitor someday doesn't keep RJ up at nights. R2 logistics does if anything.
 

NY_Rob

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BMW put a motorcycle engine in the electric i3 for this purpose
"motorcycle engine"? You're being very generous and I love our i3 REX, but that little REX in the i3 is the engine used in the BMW C650 GT maxi-scooter. It's a 34hp, 647cc 2 cyl engine that's rated at 25kWh.
The i3 is very aerodynamic and gets 4mi/kWh all day long and that 34hp engine is just barely sufficient to keep up with traffic at 65mph, forget maintaining that speed going up grade. If the Scout is on par aerodynamically with the Rivian vehicles (half as efficient as the i3) you're going to need a pretty decent size engine for the generator.. 4cly minimum. You're not getting away with any less than that IMO.
 

SeaGeo

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My Sierra starts at 350kW and doesn't drop below 300kW until nearly 12 minutes into a charge, but the battery is so big in this thing that it still ends up being "slow" for the 10-80% metric. My sessions generally end up being much less than 80% because our stop just took X time for whatever else we were doing, and now has enough to get us to our next planned stop, even when towing our camper. We probably are stopping more frequently than some people might since we have an infant in our family that can't always tolerate being in the car seat for hours.

Closest analog I have is 14-65% in 30 minutes. Station dispensed 122 kWh, and was still at 190kW when I unplugged.

GM's voltage is still fairly low for an 800V system, It's at 726V while putting 350kW in at 14%, 779V at 65%. I suspect they might have a little more room to move the charge rate up, since it's never at 500A during this charge session, but it might not be beneficial if it means heat accumulates faster leading to an earlier taper. I'm fully in the "800V is better" camp, as long as the battery heating is being managed well enough.
Heh, Yeah. Being slow in that 10-80 metric is offset somewhat by the over 400 mile highway range that thing gets. There's some interplay between charging speed and range. It doesn't matter if you can fully charge in 5 minutes if you only have 5 miles of range. :)

And yeah, I didn't want to get into the details about high/low voltage. Honestly the Rivian voltage range switching between 400v and 800v would be pretty ideal if they could dump the heat. Which doesn't *seem* to be a problem with my gen2 pack. As far as I can tell it's something else... perhaps cell related.
 

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Nix

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Let’s see if they deliver a product.

That said: they had me at front bench seat.
The funny thing to me about the front bench seat, is how much money I had to pay to buy used OEM high-back Scout II bucket seats and center console to convert from bench to buckets back in the day.

Bench seats really weren't that useful on Scouts with the manual transmission, because shifting into 4th puts your elbow right into the gut (or worse) of a center seat passenger. Not to mention the hump putting passenger's knees in the way of the shifter.

Bucket seats were a rare option, and hard to find even 20 years ago.

The funny thing about it now being electric, is that a flat floor and no need for a shifter would actually make the bench seat a better option now than it ever was on the original Scout II.
 

underkuver

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"motorcycle engine"? You're being very generous and I love our i3 REX, but that little REX in the i3 is the engine used in the BMW C650 GT maxi-scooter. It's a 34hp, 647cc 2 cyl engine that's rated at 25kWh.
The i3 is very aerodynamic and gets 4mi/kWh all day long and that 34hp engine is just barely sufficient to keep up with traffic at 65mph, forget maintaining that speed going up grade. If the Scout is on par aerodynamically with the Rivian vehicles (half as efficient as the i3) you're going to need a pretty decent size engine for the generator.. 4cly minimum. You're not getting away with any less than that IMO.
Law sees them as one in the same. Try getting pulled over in DC (by a motorcycle cop) on a scooter and telling the cop you should be allowed to park on the sidewalk and not wear a helmet to go 3-blocks.

The tag on the 'scooter' says 'motorcycle' and he was nice enough to not write me a ticket whilst grabbing a gallon of milk at CVS.

Point taken though! Guess I should have driven our i3 REX and blocked the intersection ;)
 

ThirteenElectrics

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Then try adding an RV.
I would love an electric RV. Not doing to happen as most RV buyers are old and will die before the environment sours on them. They don’t care. Energy density of batteries is also not high enough. The only hope is hydrogen or renewable hydrocarbon fuels.
 

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M3_R2

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I would love an electric RV. Not doing to happen as most RV buyers are old and will die before the environment sours on them. They don’t care. Energy density of batteries is also not high enough. The only hope is hydrogen or renewable hydrocarbon fuels.
I would consider a Pebble but they are cost prohibitive, for me at least. With sufficient infrastructure, you only need so much energy. With the momentum that using electrons has, I'm not seeing hydrogen as an option in my lifetime.

I'm just saying that if you think the generator will barely keep you going, try adding an RV to that strain. It just ain't happening. If you are going 60mph at 1mi/kWh with a trailer, what utility will a generator be?
 

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