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Old 11-21-2017, 08:24 PM   #3 (permalink)
JRMichler
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Join Date: Feb 2011
Location: Phillips, WI
Posts: 1,013

Nameless - '06 GMC Canyon
90 day: 37.45 mpg (US)

22 Maverick - '22 Ford Maverick XL
90 day: 41.9 mpg (US)
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Does anybody have any good estimates of kwH per mile for an aerodynamic LRR semi truck? The 13 MPG of the Airflow Bullet Truck implies about 1 kwH per mile. The advertised 500 mile range for the Tesla truck would need a 500 kwH battery.

A Google search comes up with the 85 kwH Tesla battery weighing 1200 lbs, so a 500 kwH battery would weigh about 7000 lbs. Add 1000 lbs or so for motors, and the drive package comes to about 8000 lbs.

Compare to a conventional truck drive train. These numbers are the best I could come up with in a quick Google search, so maybe somebody more knowledgeable could improve them.

Cummins X15 engine: 3150 lbs
Eaton AMT: 850 lbs
Two differentials: 760 lbs
200 gallons fuel: 1380 lbs
Two fuel tanks: 200 lbs
Total: 6340 lbs

If the truck is used for shorter runs and returned to the same place every night for charging, a smaller battery of 300 kwH or so may be sufficient. In that case, the electric drive train could be lighter than the diesel drive train.

An electric drive train will have performance advantages in short haul city driving. The electric heavy duty truck may not be as goofy an idea as I thought a year ago.
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06 Canyon: The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.

22 Maverick: Summer 2022 burned 62.74 gallons in 3145.1 miles for 50.1 MPG. Winter 2023-2024 - 2416.7 miles, 58.66 gallons for 41 MPG.
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