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Yosemite Sam1

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Posted: 06/01/22 01:48pm Link  |  Quote  |  Print  |  Notify Moderator

ewarnerusa wrote:

Cool, thanks for sharing. I am very curious about EV options and I like the idea of something I could tow with. I want to see what kind of mobile solar charging options people come up with. I'm not talking about an unrealistic perpetual energy situation. But more like I'm boondocking for a few nights, can a large array on the trailer/camper recharge my electric vehicle to full during my stay?


Not yet but maybe coming with the leaps and bounds of the technology in solar panels.

Reisender

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Posted: 06/01/22 03:37pm Link  |  Quote  |  Print  |  Notify Moderator

ewarnerusa wrote:

Cool, thanks for sharing. I am very curious about EV options and I like the idea of something I could tow with. I want to see what kind of mobile solar charging options people come up with. I'm not talking about an unrealistic perpetual energy situation. But more like I'm boondocking for a few nights, can a large array on the trailer/camper recharge my electric vehicle to full during my stay?


I love the.concept but that is all way above my pay grade.

We just came thru Saskatchewan and are at our last supercharger stop before we cross to Manitoba. Presently at the whitewood supercharger for about 20 minutes. We are going to shut it down for the day in about 100 kilometres in a little municipal Lyons campground. 30 bucks full service. Extremely gusty winds here right now. Tomorrow we’ll blast thru Manitoba before we go back into tour mode in ontario. So many nice parks and lakes there that we haven’t had a chance to visit. Looking forward to getting back to the slower pace.

Just for reference this is our little combo. I have no idea how it compares to the Rivian as far as towing as I don’t know much about the Rivian. I like it though.

[image]

Grit dog

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Posted: 06/01/22 05:10pm Link  |  Quote  |  Print  |  Notify Moderator

ewarnerusa wrote:

Cool, thanks for sharing. I am very curious about EV options and I like the idea of something I could tow with. I want to see what kind of mobile solar charging options people come up with. I'm not talking about an unrealistic perpetual energy situation. But more like I'm boondocking for a few nights, can a large array on the trailer/camper recharge my electric vehicle to full during my stay?


Nope. Green energy is not magical, as much as many portray it to be.
If you covered basically the whole top of a 30’ long camper (and now no access to anything on the roof and 100 more holes in the roof, lol) AND used none of the power to recharge the camper, AND had 12hours a day of direct sunlight for a 3 day weekend, you could put a little under “a quarter tank” of fresh feisty electrons in your Rivian.
But your Rivian will kill electrons pulling a 30’ camper faster than a jackrabbit with some buckshot in its arse. So the good news is, you will probably not get to camp until late Saturday night after charging up so many times and have to leave by noon on Sunday to make it home for work on the Tuesday after the long weekend, so you’ll save a lot of money in camping supplies and beer!

Let the games begin with the hopes and dreams and unicorn farts folks!
(But please run the numbers first before you beak off, it will help you realize that magic doesn’t move mountains…or campers!)


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Grit dog

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Posted: 06/01/22 05:13pm Link  |  Quote  |  Print  |  Notify Moderator

Reisender wrote:

ewarnerusa wrote:

Cool, thanks for sharing. I am very curious about EV options and I like the idea of something I could tow with. I want to see what kind of mobile solar charging options people come up with. I'm not talking about an unrealistic perpetual energy situation. But more like I'm boondocking for a few nights, can a large array on the trailer/camper recharge my electric vehicle to full during my stay?


I love the.concept but that is all way above my pay grade.

We just came thru Saskatchewan and are at our last supercharger stop before we cross to Manitoba. Presently at the whitewood supercharger for about 20 minutes. We are going to shut it down for the day in about 100 kilometres in a little municipal Lyons campground. 30 bucks full service. Extremely gusty winds here right now. Tomorrow we’ll blast thru Manitoba before we go back into tour mode in ontario. So many nice parks and lakes there that we haven’t had a chance to visit. Looking forward to getting back to the slower pace.

Just for reference this is our little combo. I have no idea how it compares to the Rivian as far as towing as I don’t know much about the Rivian. I like it though.

[image]


June 1 and no leaves on the trees in Saskatchetoon yet? Dang, late spring this year!

time2roll

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Posted: 06/01/22 07:00pm Link  |  Quote  |  Print  |  Notify Moderator

ewarnerusa wrote:

Cool, thanks for sharing. I am very curious about EV options and I like the idea of something I could tow with. I want to see what kind of mobile solar charging options people come up with. I'm not talking about an unrealistic perpetual energy situation. But more like I'm boondocking for a few nights, can a large array on the trailer/camper recharge my electric vehicle to full during my stay?
no

Even 2000 watts solar will produce maybe 10 kWh per day into a 150 kWh battery will be at least a couple weeks.


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dodge guy

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Posted: 06/02/22 04:42am Link  |  Quote  |  Print  |  Notify Moderator

Check out TFL truck on YouTube. They did a towing test with a Rivian. Of course they tested it on CO up I70. It’s an extreme test, but still shows the extreme limitations of EV’s.


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BCSnob

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Posted: 06/02/22 06:08am Link  |  Quote  |  Print  |  Notify Moderator

“Extreme limitations” wasn’t informative.

The Rivian compares well, according to TFL, to other trucks of comparable size tested on the Ike. “Refueling” time and infrastructure are currently limitations; the “tank” size is smaller than other 1/2 tons.

* This post was last edited 06/02/22 06:39am by BCSnob *   View edit history

valhalla360

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Posted: 06/02/22 07:02am Link  |  Quote  |  Print  |  Notify Moderator

Yosemite Sam1 wrote:

ewarnerusa wrote:

Cool, thanks for sharing. I am very curious about EV options and I like the idea of something I could tow with. I want to see what kind of mobile solar charging options people come up with. I'm not talking about an unrealistic perpetual energy situation. But more like I'm boondocking for a few nights, can a large array on the trailer/camper recharge my electric vehicle to full during my stay?


Not yet but maybe coming with the leaps and bounds of the technology in solar panels.


What leaps and bounds are you speaking of?

The price of solar panels has come down with economy of scale and china dumping (it seems to have leveled out though) but I haven't seen any substantial improvements in years.

Problem with solar is a massive 3kw solar array (covering every square inch of a larger RV and costing may thousands) will generate around 10-12kwh per day if you aren't in shade (in shade and it will produce next to nothing). A vehicle even remotely capable of towing more than a tear drop is going to have a 125-150kwh battery bank, so you are talking many days to refill off solar.

Propulsion, just isn't there.


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JRscooby

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Posted: 06/02/22 08:51am Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

Yosemite Sam1 wrote:

ewarnerusa wrote:

Cool, thanks for sharing. I am very curious about EV options and I like the idea of something I could tow with. I want to see what kind of mobile solar charging options people come up with. I'm not talking about an unrealistic perpetual energy situation. But more like I'm boondocking for a few nights, can a large array on the trailer/camper recharge my electric vehicle to full during my stay?


Not yet but maybe coming with the leaps and bounds of the technology in solar panels.


What leaps and bounds are you speaking of?

The price of solar panels has come down with economy of scale and china dumping (it seems to have leveled out though) but I haven't seen any substantial improvements in years.

Problem with solar is a massive 3kw solar array (covering every square inch of a larger RV and costing may thousands) will generate around 10-12kwh per day if you aren't in shade (in shade and it will produce next to nothing). A vehicle even remotely capable of towing more than a tear drop is going to have a 125-150kwh battery bank, so you are talking many days to refill off solar.

Propulsion, just isn't there.


A theory that has crossed my mind; Say you are dark camping with a solar/battery system that meets your demand most times, but you get a few days of cloud/rain and run short of power. Could the E-TV be set up to charge the camper, then go to town for recharge? I could see this working even better if the rig was MH/E-toad.

Reisender

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Posted: 06/02/22 08:57am Link  |  Quote  |  Print  |  Notify Moderator

Yah. People are surprised by the amount of energy motive forces require. We have had a zillion questions from curious people. We have found on this trip that many of the Superchargers are co-located with gas stations or gas bars in shopping areas. People will leave their vehicle at the pump to come over and ask about our little trailer and SUV combo. Many ask why we just don’t put a solar panel on the roof to recharge instead of using the supercharger. I try to explain but I’m not good at that kind of thing. Others ask if we turn off the AC to save range and again it’s hard to explain how little power is used for AC and heat in a vehicle compared to motive forces. We just did a 605 kilometre day and probably used around 210 kwh of power. My guess is about 8 or 9 kwh of that was for the AC. The rest was motive. The range graphs change very little with AC use. Point is I doubt solar all over the car would keep up with the AC let alone the motive requirements.

Not an expert. Just an EV/RVer.

Safe travels all.

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