Undercarriage cover 60mph 100Amps
No undercarriage cover 60mph ~120-130 amps
Air dam 60mph ~115-125 amps
Wow! That is really surprising that a simple cover like that would make that much difference. I have driven back and forth in head-winds, tail-winds and no wind. My new 60mph average current draw is indeed only 100Amps.
I used to drive 40 miles at 55mph and my average energy consumption was 325Wh-Hr/mile. Now if I drive 55mph for 40 miles, my consumption is only 290Wh-Hr/mile.
I can now drive 60-65mph and it only draws the same amount of energy as I used to draw going 50-55mph.
My cover has a few holes in it. In front of the front wheels and in back of the back wheels. I want to cover those place up next.
I also left room for the leaf springs to flex around and open places under the supports used during vehicle maintenance.
For the first time, I feel like I can drive my EV truck at above-normal highway speeds without fear of loosing too much range.
The other day, traffic was cruising at 80mph on north-bound I-215. Usually I stay in the right-hand lane and take it easy at 55-60mph, leaving all the other diarrhea rat-racers to their own folly. This day, I floored it just for fun and got up to 87mph fairly easily before I had to show down for the Legacy Highway exit. Wow, that's a new speed record for my EV truck.