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wanderingaimlessly

SOBOVA

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Posted: 08/14/19 04:21pm Link  |  Quote  |  Print  |  Notify Moderator

"Hydro has a place too, as well as being tied to flood control, irrigation etc. Wind as well. "
yeah they do, but how do you put them in your back pocket and take them with you?
Sails being put up will be cool.
These new high tech trucks are sounding more and more like a Mad Max Movie.

Yes, I'm just having fun with this.

ShinerBock

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Posted: 08/14/19 04:34pm Link  |  Quote  |  Print  |  Notify Moderator

Reisender wrote:



Good question. I’ll do some snoopin. The ability to enter that kind of data would be kinda cool.


The ability to even have that information for every trailer out there would be cool, but highly unlikely.

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Posted: 08/14/19 05:14pm Link  |  Quote  |  Print  |  Notify Moderator

wanderingaimlessly wrote:

"Hydro has a place too, as well as being tied to flood control, irrigation etc. Wind as well. "
yeah they do, but how do you put them in your back pocket and take them with you?
Sails being put up will be cool.
These new high tech trucks are sounding more and more like a Mad Max Movie.

Yes, I'm just having fun with this.


[emoticon]

Reisender

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Posted: 08/14/19 05:14pm Link  |  Quote  |  Print  |  Notify Moderator

ShinerBock wrote:

Reisender wrote:



Good question. I’ll do some snoopin. The ability to enter that kind of data would be kinda cool.


The ability to even have that information for every trailer out there would be cool, but highly unlikely.


Trudat.

wanderingaimlessly

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Posted: 08/14/19 05:34pm Link  |  Quote  |  Print  |  Notify Moderator

For the electrical engineers that really want to get into the weeds on this, real question for you.
IF you had a Tesla truck and TT and ran out of power in the desert southwest. And you had a trailer with 400 watts of solar, and a 430 Amp/hr battery pack. Along with a 1500 watt inverter.
How long would it take to generate enough power to get the truck, without the trailer, 20 miles, to a real power source for recharging if you dont run anything else in the trailer?
It may be a lot better than I am guessing, but I really do wonder if there is an optimistic answer.
That there is a self sufficient method is a positive, just curious if the method would be real world useful.

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Posted: 08/14/19 05:56pm Link  |  Quote  |  Print  |  Notify Moderator

wanderingaimlessly wrote:

For the electrical engineers that really want to get into the weeds on this, real question for you.
IF you had a Tesla truck and TT and ran out of power in the desert southwest. And you had a trailer with 400 watts of solar, and a 430 Amp/hr battery pack. Along with a 1500 watt inverter.
How long would it take to generate enough power to get the truck, without the trailer, 20 miles, to a real power source for recharging if you dont run anything else in the trailer?
It may be a lot better than I am guessing, but I really do wonder if there is an optimistic answer.
That there is a self sufficient method is a positive, just curious if the method would be real world useful.


Well, a kw will take you about 6.7 km in our cars. So 30 km is around 20 miles. So let’s say you need 5kw total. I’ll leave it to someone else from there.

time2roll

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Posted: 08/14/19 07:12pm Link  |  Quote  |  Print  |  Notify Moderator

Generating 2 kWh per day and 3 miles per kWh you would get maybe 6 miles per day.
With losses and general conditions I would say five days. YMMV


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wilber1

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Posted: 08/14/19 09:52pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

wilber1 wrote:

Does it know if you are going to make it towing a 4000 lb barn door? What I got from those videos is that it doesn’t. I think those videos made a good case for a plug in hybrid with a good size battery, so you can take advantage of the electric motor torque on grades but not worry about being stranded.
Supposed to learn based on your driving style but this would need a software update to get a more accurate estimate at the start. User would quickly learn to divide by 2 or 3 depending on conditions.

About the same as a petrol truck where the DTE says 450 miles and you hook up a trailer and know very well you only get 225 miles range.


It would only be able to make a prediction after you started towing and it knew the actual energy consumption. To make any kind of prediction in advance it would have to know the weight of the trailer and its drag coefficient. Yes, you would get an idea from experience.


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ShinerBock

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Posted: 08/15/19 10:26am Link  |  Quote  |  Print  |  Notify Moderator

wilber1 wrote:



It would only be able to make a prediction after you started towing and it knew the actual energy consumption. To make any kind of prediction in advance it would have to know the weight of the trailer and its drag coefficient. Yes, you would get an idea from experience.


This is why I still say EV's have a very long way to go before they become the dominant choice for tow vehicles. It is not as simple as most think, and these obstacles need to be addressed. Some can say that they can just add a larger battery in the trucks, but that will also add weight(and costs). Trucks today are already maxed out in there government regulation classes as it is and making them heavier would lower their rated capabilities even more. You would likely end up having an EV truck with a GVWR in Class 3 one ton, but with the capabilities of or less than a Class 2A half ton.

afidel

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Posted: 08/15/19 08:32pm Link  |  Quote  |  Print  |  Notify Moderator

ShinerBock wrote:

wilber1 wrote:



It would only be able to make a prediction after you started towing and it knew the actual energy consumption. To make any kind of prediction in advance it would have to know the weight of the trailer and its drag coefficient. Yes, you would get an idea from experience.


This is why I still say EV's have a very long way to go before they become the dominant choice for tow vehicles. It is not as simple as most think, and these obstacles need to be addressed. Some can say that they can just add a larger battery in the trucks, but that will also add weight(and costs). Trucks today are already maxed out in there government regulation classes as it is and making them heavier would lower their rated capabilities even more. You would likely end up having an EV truck with a GVWR in Class 3 one ton, but with the capabilities of or less than a Class 2A half ton.


I'm hopeful that my retirement tow vehicle will be a used Class 8 electric truck. The Tesla semi is now testing at 600 miles for the full range model with a 75k pound payload (albeit jersey barriers so way less drag than a 5er) link


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