Hyper-hypermiling The Aptera

Aptera Community Aptera Discussions Hyper-hypermiling The Aptera

Aptera Community Aptera Discussions Hyper-hypermiling The Aptera

  • Hyper-hypermiling The Aptera

     Ari Colin updated 2 weeks, 2 days ago 9 Members · 11 Posts
  • Jennifer Sensiba

    Member
    November 19, 2021 at 2:38 am

    I’ve got an interesting idea that I’d like to explore more: going far more than 1000 miles by trying to keep power levels closer to what the panels are generating. I know this would likely be very, very slow. Like college student solar racer 20 MPH slow.

    I do remember seeing in a video (can’t remember which one) that the Aptera pulls 1500 watts at 60 MPH. I may have the figure wrong on that, but it’s close to that. Because aero drag increases proportional to the cube of speed, going half the speed should produce 1/4 the drag. Combined with other hypermiling techniques, I’m thinking it may be possible to make the solar become a significant portion of the vehicle’s power.

    I know you’ll rarely get the full 700 watts from the solar panels, but if you can keep the power to move on average under 500-1000 watts, it could get some insane range.

  • Steven G. Bueche

    Member
    November 19, 2021 at 3:46 am

    This is above my paygrade but please do continue or at least contact someone at the home office. I’m sure the fan base would love to hear about anything that will extend their range.

  • Riley -_-

    Member
    November 19, 2021 at 3:56 am

    Theoretically you can travel forever it would just take a long time 35 or so miles of recharge a day. Weight plays a huge role in your calculations as well so if you were to attempt pushing the limits you could rip out most of the interior and dramatically increase range.

  • Joshua Rosen

    Member
    November 19, 2021 at 6:52 am

    At the height of summer in Texas, circling an empty parking lot around a football stadium or an oval track at 20MPH you might be able to drive all day on solar power alone. That would prove nothing but it would make a good article for you on Clean Technica and a YouTube video. I’m sure that Aptera would be willing to lend you a car for the attempt next summer. You would want to do this in the 250 mile version not the 1000 mile version, the 1000 mile car is going to be very heavy.

    • Oz Man

      Member
      November 19, 2021 at 8:02 am

      Joshua, I would guess that since the optimum solar charge (Over whatever time frame Aptera used for its calculations. 8hr? 12hr? ?) is 44 miles, to drive on solar alone at 20MPH might be a bit optimistic.

      • kerbe2705

        Member
        November 19, 2021 at 10:19 am

        I believe that it was over a 12 hour, cloudless, southern California day…

  • Curtis Cibinel

    Member
    November 19, 2021 at 9:34 am

    I spent a lot of time looking into this and the potential definitely exists (ignoring solar). On a track with a 90lb jockey and low rolling resistance tires could very likely go over 2000 miles. Maybe 1700 could be possible on roads. Obviosly totally pointless but that doesn’t stop people.

    https://docs.google.com/spreadsheets/d/1Tuu7avKH2dS_JPk7aiP2av09a1f1WE0OvvNH6fdHpiQ/edit?usp=drivesdk

    note: I make many assumptions. Feel free to grab a copy and play with the numbers.

  • Ray Holan

    Member
    November 19, 2021 at 10:14 am

    Hi, Jennifer. You have an intriguing idea there. I’m sure once Apterae hit the road next year (fingers crossed!) hypermiling will be an active discussion and there will probably be friendly competition for “how far did you get on your last charge?” Taking the batteries down to their last few percentage points of energy would maximize your range, but, as others have pointed out elsewhere on the forum, this would negatively affect the life of your pack.

    I have had extensive hypermiling experience with several Honda Insights. Once you eliminate the energy penalty of stops and starts by picking an uninterrupted stretch of road, your main enemies to greater MPG ( = greater range in our case) are weight, rolling resistance, and drag. Aptera is head and shoulders above other ICE vehicles and other EV’s in each of these areas already. Not much more weight can be removed from the vehicle.

    You can reduce rolling resistance by pumping up the tires to 45 psi or thereabouts — ride will be noticeably harsher but vehicle will roll more easily. Keeping the speed down reduces drag. So slow and steady is about all you’re left with as far as optimizing range.

  • Ari Colin

    Member
    November 19, 2021 at 12:06 pm

    Well I managed 81.8 miles on one charge in my 2012 Volt. Average speed was 23 mph. Volt was rated at 35 miles and ended up with 8.34 miles / kWh. Also had tires way over spec at 60 psi. There is an article about this drive on InsideEVs. Would love to try an extreme test in an Aptera.

    • Ray Holan

      Member
      November 19, 2021 at 1:02 pm

      Quite an achievement, Ari. I had a 2014 Volt and my best was only 46 miles. I didn’t have the patience for an avg. speed of 23 mph though. You’re a better man than I. Or at least a more patient one;)

      • Ari Colin

        Member
        November 19, 2021 at 1:51 pm

        I found the perfect spot for the hypermile run, FedEx field in Landover, MD, where the Redskins or whatever they call themselves now play.

        It is a giant traffic circle, plus there are EVgo chargers there so I could top off before the run. I also waited until my tires had 50K miles on them to reduce rolling resistance. I waited too long and it got dark before I completed and I could see a noticeable drop in efficiency due to the lights.

        https://insideevs.com/news/321962/just-how-far-can-a-chevrolet-volt-go-on-electricity-how-about-818-miles/

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