BillyGee

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Because an inflated thing is taut and rounded, and collapses when not in use.

-Crissa
Doesn't change that this problem has been solved for nearly 100 years. Making a wacky waiving inflatable arm flailing tube man version is just more parts. Even a fairing can fold down when not in use and not have nearly as many failure points.

Different-combinations-of-fairing-on-the-baseline-semi-trailer-truck-model.png

 
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Here in Austria and Germany, about 0.60 €/kWh at super chargers.
Spot market prices for electricity are changing much in the last year,
but let's assume 0.25 €/kWh in average.
Assuming 800 Wh/km without and 600 Wh/km with the aerodynamic optimization and 150 kWh battery for the Cybertruck and different distances to the customer:
On the way back 300 Wh/km assumed.
100 km: 110 kWh - 90 kWh. 5 € less
150 km: 165 kWh - 135 kWh. 150 * 0.25€ + 15 * 0.60€ = 46.50 € ### 135 * 0.25€ = 33.75€, 12,75 € less
200 km: 220 kWh - 180 kWh. 150 * 0.25 € + 70 * 0.60€ = 79.50 € ### 150 * 0,25 € + 30 * 0.60€ = 55.50 €, 24 € less
300 km: 330 kWh - 270 kWh. 150 * 0.25 € + 180 * 0.60€ = 145.50 € ### 150 * 0,25 € + 120 * 0.60€ = 109.50 €, 36 € less
200 delivery tours per year with an average of 20 € less for charging makes 4,000 €
 

charliemagpie

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With the transition to cheaper renewables, why are we thinking of these things now ?

Its a fad.


Jist slow down, driver safer, its a farken load and you are pulling full capacity.

It is not your core business. it is .00001% of it.. and not worth 1% of your time
 
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With the transition to cheaper renewables, why are we thinking of these things now ?

Its a fad.


Jist slow down, driver safer, its a farken load and you are pulling full capacity.

It is not your core business. it is .00001% of it.. and not worth 1% of your time
With 10 million turn around per year, 8,000 are 0.0833 %.
But I did not calculate time loose at more recharging underway.
There are also areas with very weak fast charging infra structure.
Imagine somewhere is the only 50 kW charger just out of order
and You have to charge with 11 kW AC.
 

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I think a rigid fairing would be less expensive and easier to deal with.

Likely this will require a lot of trial and error once you get the truck.

I’m curious, how do you deal with this now?
 


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Just got a first photo from this
WhatsApp Image 2022-11-16 at 15.38.58.jpeg
Holy crap! How tall is that trailer? The CT is 6'3" tall. Is that trailer 12' 6" tall? I suppose that is about right for a camper but it just looks super tall here. Probably because it's so short.
I don't like the space between the CT and camper being filled by the bag so much but I suppose that would work as long as it was stiff enough to not flap. How much of an aerodynamic advantage would this give you?
 

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Is one or two extra stops at a supercharger so inconvenient that we’re resorting to this?
If having one of these was the difference of whether or not you can make it to your hunting camp...
 

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Here in Austria and Germany, about 0.60 €/kWh at super chargers.
Spot market prices for electricity are changing much in the last year,
but let's assume 0.25 €/kWh in average.
Assuming 800 Wh/km without and 600 Wh/km with the aerodynamic optimization and 150 kWh battery for the Cybertruck and different distances to the customer:
On the way back 300 Wh/km assumed.
100 km: 110 kWh - 90 kWh. 5 € less
150 km: 165 kWh - 135 kWh. 150 * 0.25€ + 15 * 0.60€ = 46.50 € ### 135 * 0.25€ = 33.75€, 12,75 € less
200 km: 220 kWh - 180 kWh. 150 * 0.25 € + 70 * 0.60€ = 79.50 € ### 150 * 0,25 € + 30 * 0.60€ = 55.50 €, 24 € less
300 km: 330 kWh - 270 kWh. 150 * 0.25 € + 180 * 0.60€ = 145.50 € ### 150 * 0,25 € + 120 * 0.60€ = 109.50 €, 36 € less
200 delivery tours per year with an average of 20 € less for charging makes 4,000 €
Streamlining makes sense on the millions of semi-trucks criss-crossing North America and covering big miles. But long-distance towing by pickups is not really a thing except in bespoke edge cases. The popular refrain "what about towing" is largely a myth. With or without EV's, towing large RV's long distances around the country at freeway speeds is quickly becoming an outdated American pastime that will wane due to the impracticality of it (much to the disappointment of Saudi Princes and other big oil royalty). I'm not saying RV'ing will go away entirely, there will always be people with resources to burn or those who want to spend their last dollars emulating long distance truckers with their tow-behind houses on wheels, using gobs of energy to punch big holes in the air as they happily munch potato chips and dip in the air-conditioned cab. Those people do not care about saving 10% if it requires the investment of time, money and labor. And it's activity that will become increasingly old-fashioned as people learn how to travel without needing to puch those big holes in the thick air.

Towing heavy things by pickup is a thing and it serves many important functions:

Getting heavy equipment to the jobsite
Delivering heavy equipment the last "mile" to the buyer
Hauling construction materials from the warehouse to the jobsite
Towing a boat from the dry storage to the lake or bay
Getting the hay from the field to the livestock
Getting the fisherman's net or pots from the web locker to the boat
Bringing the tool trailer from jobsite to jobsite, etc. etc, etc.

None of these uses require streamlining. Semi's travelling long distances on a regular basis benefit from streamlining, pickups towing huge trailers are only an economical solution for local usage and edge cases.
 
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Why should be towing RV outdated?
The house, which I want to transport in 6 segments, has 33 kW photovoltaic.
There is also the 9 segment version with 44 kW photovoltaic.
Additional a carport or garage for 2 cars has 10 kW.
So the larger version with a carport has 54 kW PV and can produce in the north of US 50,000 kWh per year. This goes up to 90,000 kWh in the south.
Heating or Cooling needs nearly nothing.
So for Austria near Salzburg 200 kWh/a for 20° room temperature, 600 kWh/a for 25° room temperature.
So in some years when battery prices come down,
calculate 4 Cent/kWh for the south.
Even with 80 kWh/100 km, it is only US$ 3.20 for 100 km.
Energy will become extreme cheap.
 
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RVs take up lots of space as well as energy.

-Crissa
And? The space is a problem for Hong Kong and Singapore.

Energy will be no problem.

Imagine in the US 80 million houses according to the new building standard CPSH - Climate Protection Superiority House with 50 kW photovoltaic in average.
4000 GW photovoltaic with about 4800 GWh yearly yield.
But the electricity production is not all.
Most houses in the US are according to Austrian building regulations shanties not suitable for housing because of far too little insulation.
Imagine a shanty consuming 30,000 kWh/a for air conditioning in the south is replaced by a CPSH standard certified house producing 80,000 kWh/a and needing less than 1,000 kWh for a comfortable room temperature.
 

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And? The space is a problem for Hong Kong and Singapore.
Pretty sure you are talking about different things.

@Crissa is talking about a caravan‘ Recreational Vehicle. Big giant vehicle people take “Camping” which burn large amounts of fuel so people can watch TV in the forest.

I think you are talking about a modular/ mobile home which people live in.

 

 
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