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Old 09-06-2022, 01:40 PM   #1
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C&D article - How far can an EV truck tow ?

This article is from the spet/22 issue of car and driver magazine.

it shows that most EV trucks loose between 50-70% of their range when towing a 6K lb trailers.

i wonder how they tow and how much range is lost with an aero dynamic airstream?
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Old 09-06-2022, 02:38 PM   #2
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The 50 to 70% loss of range seems about right. Even internal combustion engine vehicles lose a lot of range when towing.

Of course the actual loss will depend on a great many factors besides the aerodynamic shape of the load being towed. Other variables include how much wind there is, the grade of the highway, how much starting and stopping there is, the driving habits of the driver, specifically how quickly they accelerate, coast, or stop, and the ambient temperature, to name a few.

But most reports indicate a loss of at least half for planning purposes. Most modern BEVs include an onboard computer that constantly calculates range remaining and will display the nearest available charging stations, their distance, and how full they are.
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Old 09-06-2022, 02:45 PM   #3
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I think 50% range loss is the minimum for a travel trailer, and more depending on travel speed, one's propensity to take advantage of all the available hp, etc.

Can Am modified an AS27 to remove the roof AC to further reduce drag. We may see more options in that regard, perhaps a split AC like Bowlus are using.

We find with our EV that for range, grade doesn't matter much, compared to travel speed, as we come down all the hills we go up.

I think the on board range computers that skyguyscott mentions will get a lot better over the coming year or two. These are first generation EV trucks, and there is much room for improvement. I was impressed with the Lightning's ability to store multiple trailer profiles and customize the towing consumption figures. One problem with road tests such as the one C&D did is that the vehicles they are driving haven't had a chance to learn the trailer details yet, so the range estimates the testers saw are cruder.
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Old 09-14-2022, 06:41 PM   #4
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According to GM towing is the same for EV’s and ICE, averaging a 25% loss. If you keep your speed reasonable (under 60) that’s generally accurate, it goes to 50% loss if you drive 70 and otherwise aren’t careful. Otherwise there’s nothing special about towing with an EV other than you have more control authority, downhill is a breeze and range might be an issue, unless you have a 400+ mi battery like the Silverado EV.

C&Ds test is what I’d call ‘worst case’ or maybe ‘stupid case’, just be a grandpa driver, why scream down the highway at those speeds in your expensive EV towing an expensive Airstream?
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Old 09-14-2022, 07:30 PM   #5
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Puhleese! Not another EV thread! They all end poorly.
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Old 09-15-2022, 08:32 AM   #6
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Quote:
Originally Posted by AgBullet View Post
Puhleese! Not another EV thread! They all end poorly.
While that's true, it won't be the last EV thread.... the future is inevitable, even if you don't like it...
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Old 09-15-2022, 09:49 AM   #7
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Excellent report from CanAm RV on Tesla towing on long trip

See this latest blog from Andy Thompson' s trip through the mountains etc.
https://www.canamrv.ca/blog/post/tes...rado-and-back/
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