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Stupid question thread

Discussion in 'Model S' started by KL670, Jul 15, 2017.

  1. KL670

    KL670 Member

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    I was hoping to use this thread to encourage folks to ask their "stupid" questions. So here's mine:
    Does a Tesla weigh more when it's fully charged? I know it shouldn't but just wanted to throw it out there.
    So please fire your stupid questions away.
     
  2. gavine

    gavine Petrol Head turned EV Enthusiast

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    You're not adding electrons when you charge. You're just using electricity to move ions from one side of the battery to the other. Almost like winding up a toy wind-up car. No weight is added.
     
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  3. KL670

    KL670 Member

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    I once knew someone who would fill their ICE car half full because he didn't want to add the extra weight of the gasoline. I should ask him to get a Tesla to avoid that problem now, lol
     
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  4. ahkahn

    ahkahn Member

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    I wonder if that saves even a 1/2 mile per gallon......
     
  5. gavine

    gavine Petrol Head turned EV Enthusiast

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    But maybe he likes going to the gas station every other day. :rolleyes:
     
  6. KL670

    KL670 Member

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    Or he should get in the car on an empty stomach or naked to save another .000001MPG.
     
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  7. Haxster

    Haxster Member

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    I always suspected that that huge slab under the car was really just a giant wind-up spring. That explains the electric motor sounds that I hear sometimes when I'm charging the car...they're actually just winding up the spring. Right? o_O
     
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  8. tga

    tga Supporting Member

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    Lots of discussion/debate here: How much more does a fully charged MS weigh?
     
  9. ggr

    ggr Roadster R80 537, SigS P85 29

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  10. gavine

    gavine Petrol Head turned EV Enthusiast

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    I'm not convinced that a commercially viable wind up car is not feasible. Instead of charging a battery with electricity, why not use an external electric motor to wind it up? You can also have regen, winding it while slowing down. It would probably be dangerous having all of that potential energy sitting there wound-up though. If that mechanism were to fail, it could be catastrophic.
     
  11. RYCO

    RYCO Member

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    So can it make the car lopsided?
     
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  12. f-stop

    f-stop Member

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    Leonardo da Vinci designed a wind up car
    - first self-propelled vehicle in history, and.... programmable auto-steering!
    - downside: only 40m range
     
  13. Haxster

    Haxster Member

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    A spinning inertial wheel is another approach. Not so good: the gyroscopic effect on handling. :eek: However, I understand that an inertial wheel is used somewhere in Europe for a cable car that goes up and down a steep hill. Makes sense for that application. Maybe they also considered a wind-up spring too....especially if it was in Switzerland.
     
  14. Sir Guacamolaf

    Sir Guacamolaf The good kind of fat

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    Would it be more efficient to replace the big battery underneath with a bunch of wind up springs instead?
     
  15. BluestarE3

    BluestarE3 Active Member

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    Maybe mount the flywheel so it spins vertically? You can hide it within a dorsal fin of some sort that could be marketed as a retro design element. :p
     
  16. cpa

    cpa Active Member

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    While I do not know the precise mechanism for the cars to go up and down the mountain, if they are somehow counterbalanced, this would be a funicular. One of those words one learns in junior high school that one never forgets, even 50 years later.
     
  17. BluestarE3

    BluestarE3 Active Member

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    Hope this isn't an open invitation to start/revive various crackpot perpetual motion discussions that crop up here periodically. :rolleyes:
     
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  18. DamianXVI

    DamianXVI Member

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  19. BluestarE3

    BluestarE3 Active Member

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    Angels Flight always comes to mind when I hear "funicular":

    [​IMG]
     
  20. f-stop

    f-stop Member

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    This evokes an image in my mind of a Rube Goldberg-esque Tesla spring-pack, comprised of 7104 small cylindrical wind-up springs, each powering a corresponding tiny electric generator...
     

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