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Mileage when towing

Discussion in 'Model X' started by modelxowner, Jan 14, 2016.

  1. modelxowner

    modelxowner Member

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    If towing a 4000 lb trailer and 6 adults are sitting in the X. What kind of Milage can I expect? Saw Mark's video on towing his boat. Energy consumption is high with the driver only. Wonder how much more energy needed to pull 5 more people and the Milage on a full charge.
     
  2. CTemp222

    CTemp222 Member

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    Increased weight means increased rolling resistance but the main range limiter would be drag. Having extra weight wouldn't reduce range by a lot. If your concerned about your range when towing, you should focus on getting an aerodynamic trailer.
     
  3. MikeL

    MikeL some guy

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    Uphill is going to be the big difference. Getting to the lakes around here is mostly NOT a flatland journey. Simple gravity physics. I expect to suck down a full battery in <100 miles, and my boat is not big & heavy, just uphill. Stay tuned :smile:
     
  4. adiggs

    adiggs Active Member

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    Just think of all the energy you'll get back as you come downhill. Maybe all you'll need is enough battery left to get you back to the top of the hill, and that'll get you home :)

    And who said we can't get a "battery" on a trailer to tow for extra range! (*)

    (*) Claim of extra range isn't actually a true claim - just a recovery of previously consumed energy from losing altitude previously gained.
     
  5. mkjayakumar

    mkjayakumar Active Member

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    I wonder what stress the battery and drive train will go through on such accelerated discharge and charging.
     
  6. ratsbew

    ratsbew Member

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    I'd love to see a review towing a 5,000lb trailer up several thousand feet of elevation gain and then seeing how well regen can hold it back going downhill.
     
  7. MikeL

    MikeL some guy

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    A "trailering regen" setting, as in a real down-the-canyon-with-a-load engine breaking would be great! The battery can take at least 135kW at a SuperCharger (empty) which is more than the motor in the car can produce during regen, so yes, you should be able to recoup lots, if not all of the potential energy you used on the way up. Problems w that scenario come with cold, a battery that's already charged, or a car (EV) that's not programmed to take full advantage of the situation, in which cases you will need to use the brakes, maybe a lot! Regen is pretty much gone w a full battery, as is necessary.
    Sorry to hijack the thread. I just drive these hills everyday and know that for the short hauls, it's more of an issue than aerodynamics. If you are trailering cross country, then aero is more of a consideration. As is unhooking so you can SuperCharge!
     
  8. AnOutsider

    AnOutsider S532 # XS27

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    We have a trip coming up, and my wife has her eyes on this:

    00101_804iLdqKpSm_600x450.jpg

    at about 3600lbs dry weight, I can't see a P90D X getting more than 120 miles on a charge. A bit nerve wracking as one stretch is 130 miles between chargers.
     
  9. CTemp222

    CTemp222 Member

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    Oh wow, that's a big boy.
     
  10. cantdecide

    cantdecide Member

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    For the long stretch you could drive halfway, ditch the trailer to drive the rest, supercharge and return to pick it up... Would waste 3 hours but give you certainty.
     
    • Funny x 1
  11. CTemp222

    CTemp222 Member

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    Haha that's certainly one way to do it.
     
  12. AnOutsider

    AnOutsider S532 # XS27

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    Haha, not sure how it would be received, but certainly an option. I keep telling her there's ALWAYS an option... Just might be super inconvenient.
     
  13. jbabb

    jbabb Member

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    It would be better to be able to camp for the night in the middle of that long stretch and charge up on a 14-50 at the campground overnight.
     
  14. AnOutsider

    AnOutsider S532 # XS27

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    Not really worth it for lessth an a 2 hour drive. We'll see as the time gets closer. We may need to stick with a 2500lb or less popup camper.
     
  15. Oyinko

    Oyinko Member

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    Maybe you should consider installing solar panels on the trailer and a Tesla PowerWall in the trailer. Then, just plug your Tesla to one power outlet from the trailer. Infinite mileage, or not! :tongue:
     
  16. CTemp222

    CTemp222 Member

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    That would be cool, except that you can't charge while driving.
     
  17. AnOutsider

    AnOutsider S532 # XS27

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    Haha, exactly. Though, if the powerwall could act like a portable Supercharger, it might just mean a pitstop.
     
  18. brianman

    brianman Burrito Founder

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    @AnOutsider
    Consider how you might model an estimation of the mileage. For example, you might take into account weight of the camper, weight of the items in the camper, coeff. of drag of the camper, height, width, etc. This might be a useful start to a handy tool for evtripplanner or a good email suggestion for Tesla to offer something in-house (i.e. on the website) to aid shoppers.
     
  19. EcoHeliGuy

    EcoHeliGuy Member

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    Huh? Where in the world would that ever makes sense?
     
  20. CTemp222

    CTemp222 Member

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    Weight won't affect the range a lot, what will really bring down range is drag. So a smaller cross sectional area will improve range drastically.
     

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