Aptera exterior finish info

Aptera Community Aptera Discussions Aptera exterior finish info

Aptera Community Aptera Discussions Aptera exterior finish info

  • Aptera exterior finish info

     Kevin Queen updated 3 days, 23 hours ago 85 Members · 266 Posts
  • Jeffrey Parker

    Member
    September 21, 2022 at 4:08 am

    Why are you under the impression this cannot go through a car wash (delicate)? The wheel pull mechanism (remove the wheel shrouds)? There are touchless carwashes if the outboard wheels are your concern. There are carwashes that offer undercarriage washes as well. There are also self-serve pay-as-you-go car wash places. As for any other commonly used washing techniques would suffice, rag, brush on a stick, power washer; go ham and wipe away the dirt to your heart’s content.

    As far as how dirt would affect the aero. That would be up for experiments, aerodynamics is a bit of an unruly monster with many variables. Especially with surface roughness (dirt, erosion) or Reynolds Number in the calculations.

    In my quick read and layman understanding, there are studies of surface roughness of turbine blades for aircraft and wind turbines for electricity generation, and the results after several thousand in service hours when roughness increases the efficiency of the blades drops ~10%. I read this as in terms of lift for airfoils pressure loss. I don’t think this loss in efficiency is relevant to the drag efficiency of the Aptera.

    With the rougher surface the laminar flow boundary layer will contract towards the body surface increasing the turbulent flow. Thus, increasing drag. But how much drag is increased and how much that would affect range. My guess, it would be negligible at the speeds traveled on public roads. Now if you were going 100+ MPH then yeah more drag with increased surface roughness would probably be exponentially more relevant (probably like 5%).

    • John Voules

      Member
      September 22, 2022 at 6:10 am

      Great find David Clark. After reviewing the video I became more intrigued and I looked up the company….https://aerotechnology.com/

      Pretty impressive claims and they are backing them up by applying to auto racing.

      The application process is not as simple as we may think though. Not exactly sure how different it is from applying a regular wrap. There seems to be a bunch of surface prep including several sanding and buffing procedures along with use of isopropyl 90% alcohol. There is curing time also that needs to be added to the process.

      This film is what Chris Anthony maybe referring to. I would be more than happy to have this as a final choice or at least an option to regular wrap. Will it work on APTERA’s surface?

      • This reply was modified 1 week, 1 day ago by  John Voules.
  • Riley …

    Member
    September 21, 2022 at 4:23 am

    I don’t think any reasonable buildup of dirt will have a an effect on drag. Only if large chunks of mud get globbed onto the body than maybe.

    Definitely clean the solar panels on a regular basis. wipe down the vinyl wrapped part with UV protectant. for the underbody use something with a long handle to reach under the car. With such a unique vehicle it will be a learning experience for everyone.

  • David Clark

    Member
    September 21, 2022 at 4:53 pm

    Take I look at this stuff. Recyclable, sustainable, no paint fumes, used on race cars and range rovers.

    Maybe it’s maybe it’s old news but I just found it.

    • Scott

      Member
      September 21, 2022 at 6:45 pm

      If that’s real deal and not marketing fluff, sign me up. Very interesting find. Thanks for sharing it, David.

    • Bart Cunningham

      Member
      September 22, 2022 at 1:02 am

      They say paint in the video but I keep seeing rolls of film. I have heard some type of film is what is going to be used on Aptera so maybe this or something similar is what is planned.

    • Riley …

      Member
      September 22, 2022 at 2:49 am

      “We don’t know how long it will go for, but after 5 years it looks perfect”

      A little concerning that the only longevity testing they are willing to say is from the B pillar of a well taken care of luxury vehicle.

  • John Trotter

    Moderator
    September 22, 2022 at 6:06 am

    Dead horse kicking here. That’s OK. Better than live horse kicking. Vinyl film as a color coat is used in various industries, with adequate results. We won’t know longevity until we know the brand and I have faith that Aptera is making a selection that balances cost and durability. Post-production, I see three options: strip and paint; replace every few/several years; cover with “paint” protective film to extend life past ten years. The “replace” option isn’t the end of the world as we would get to choose a new color and, presumably, a more advanced formulation. PPF is a bit pricey ($2-4k?), but really is quite effective at protection. Strip (the film) and paint seems clunky, unless considerable disassembly is done. In any event, these are all personal choices, not affecting Aptera progress.

  • Kevin Queen

    Member
    September 26, 2022 at 8:18 am

    While my jury is still out as far as the vinyl wrap goes, I did discover that vinyl wrapped vehicles can be ceramic coated, which greatly increases their longevity in many conditions, including salt, dessert. Thoughts?

  • Gary Greenway

    Member
    September 26, 2022 at 8:30 am

    Do ceramic coatings change the luster of matte wraps?

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