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Old 10-14-2021, 02:50 AM   #21
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Originally Posted by Metalman View Post
I suspect that trailer is way overloaded with that big tractor.

You may be correct, although the tractor doesn’t look all that large to me.

Regardless, the spare wheel on trailer appears to only have 6 lugs, but even with that small a wheel, it could have rating of 3,760 pounds each, making trailer GVWR in range of 15,000 pounds possible with right tires.

Anyway, my point was that a 4-wheel motorhome makes a lot of sense provided chassis is designed for that purpose from the start. That’s also why we are seeing so many new heavy duty electric vans that are SRW (in lieu of duallies).

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Old 10-14-2021, 10:48 AM   #22
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You may be correct, although the tractor doesnít look all that large to me.

Regardless, the spare wheel on trailer appears to only have 6 lugs, but even with that small a wheel, it could have rating of 3,760 pounds each, making trailer GVWR in range of 15,000 pounds possible with right tires.

Anyway, my point was that a 4-wheel motorhome makes a lot of sense provided chassis is designed for that purpose from the start. Thatís also why we are seeing so many new heavy duty electric vans that are SRW (in lieu of duallies).
My guess would be that SRW evans simply have longer range than DRW evans simply due to the extra power needed for the DRW.

I bet they also have low-rolling-resistance tires on them to eek out a few more miles too.
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Old 10-14-2021, 11:21 AM   #23
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My guess would be that SRW evans simply have longer range than DRW evans simply due to the extra power needed for the DRW.

I bet they also have low-rolling-resistance tires on them to eek out a few more miles too.

Yes, there are a lot of reasons why SRW design is better in many applications. They can also reduce weight, thereby increasing payload. They provide much greater width between rear wheel wells, so center aisle can be wider to accommodate larger pallets/loads on floor. On independent suspension (like on most electric vans and pickups) it moves rear wheel hub outward (compared to duallies of same vehicle width), allowing rear halfshafts to have a better angle through full suspension articulation, etc...

For vehicles like a farm or dump truck DRW is fine, but for smaller motorhomes I see little advantage beyond lower cost of using an existing commercial truck chassis.
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Old 10-14-2021, 11:57 AM   #24
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Rivian's contract with Amazon has been in the news recently. I hope that it is the means by which this Company gets it's feet on the ground, and running the race!
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Old 10-14-2021, 12:04 PM   #25
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Rivian's contract with Amazon has been in the news recently. I hope that it is the means by which this Company gets it's feet on the ground, and running the race!
Clearly you haven't seen the reviews of the R1T that are making the rounds.

Note that it is in production and reaching customers hands...

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Old 10-14-2021, 02:48 PM   #26
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I've been watching with great interest... but that's not the product that will give them the capital they need to become a big player...
They need that Amazon money!
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Old 10-14-2021, 03:09 PM   #27
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I've been watching with great interest... but that's not the product that will give them the capital they need to become a big player...
They need that Amazon money!
They already have Amazon money and Ford money.

Rivian has been around for a while I doubt they are going anywhere...
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Old 10-14-2021, 03:49 PM   #28
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Clearly you haven't seen the reviews of the R1T that are making the rounds.

Note that it is in production and reaching customers hands...


That is a very interesting video. A couple of things that jumped out are the all-electric outdoor kitchen, and also his comment about the CEO (I think) stating that the auto industry does not have the capacity to regulate itself. That comment reminded me that the RV industry is probably far worse.

Acceleration of 0-60 MPH in 3 seconds seems ridiculous to me for a pickup truck, but I suppose that if towing an 11,000-pound trailer, it would still be able to accelerate to highway speeds up a steep grade and into the wind in reasonable time.

Honestly, I wish RVs were designed more like that Rivian and less like a regular house on wheels. The design seems well thought out and functional, not just a bunch of random ideas thrown together. Thanks for posting video.
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Old 10-14-2021, 04:15 PM   #29
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That is a very interesting video. A couple of things that jumped out are the all-electric outdoor kitchen, and also his comment about the CEO (I think) stating that the auto industry does not have the capacity to regulate itself. That comment reminded me that the RV industry is probably far worse.

Acceleration of 0-60 MPH in 3 seconds seems ridiculous to me for a pickup truck, but I suppose that if towing an 11,000-pound trailer, it would still be able to accelerate to highway speeds up a steep grade and into the wind in reasonable time.

Honestly, I wish RVs were designed more like that Rivian and less like a regular house on wheels. The design seems well thought out and functional, not just a bunch of random ideas thrown together. Thanks for posting video.
The F-150 Lightning will be around the same "speed" (I've heard 0-60 "under 4" ish statements).

I do think that simply is a consequence of having to tow something--need that much power. Thus as a side effect of that you get great unloaded acceleration.
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Old 10-14-2021, 04:39 PM   #30
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0 to 60?
Electric motors eat that up for lunch!
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Old 10-14-2021, 04:43 PM   #31
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The F-150 Lightning will be around the same "speed" (I've heard 0-60 "under 4" ish statements).

I do think that simply is a consequence of having to tow something--need that much power. Thus as a side effect of that you get great unloaded acceleration.

Iím not sure about that. People have been towing 11,000-pound trailers with far less than 800 HP for a very long time.

Regardless, that AWD 4-motor drivetrain would be pretty nice under a compact Axis-size motorhome. With independent suspension at each corner, wide track, low center of gravity, low unsprung mass, etc. it would ride and handle like a dream compared to truck-based motorhomes. And a lot quieter too.
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Old 10-14-2021, 05:13 PM   #32
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I think we might need to understand that a 6%, one mile up hill grade might be the equivelent to a 60mile flat run, battery usage wise.

The 400 mile range becomes a 100 mile range(insert whatever number here you like, but you know it's devastating) with any sort of uphill involved.

I believe the vehicle is a pipe dream for other than urbanites.
It is essentially a flashlight that rolls. Batteries be batteries no matter the application.
Low setting=18 hours
Med = 9 hours
High=40 minutes.

Low=lab test and media statement
High= life on the rolling roads we encounter.
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Old 10-14-2021, 05:45 PM   #33
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Well... At least it's a really BIG flashlight...
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Old 10-14-2021, 07:28 PM   #34
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Electric vehicles are great for city deliveries and grocery getters, but I will always have a gas engine in my recreational vehicle. The recharging infrastructure will never get to the places I want to visit.
Range and weight, recharging time plus the grid does not have the ability to handle all the extra load the in the coming years. Hell California can't handle the demand as it is.

On top of that there is zero chance the will be enough materials mined to make the batteries in the next decade. There are no where near enough mines scaring the earth on board and the vast majority are in China.
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