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How to plan a road trip - how long will it take?

Discussion in 'Model S: Battery & Charging' started by ChadS, Feb 9, 2013.

  1. deonb

    deonb Supporting Member

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    I've once done a spreadsheet, and the maximum speed you can average using the SuperCharger network on the West Coast (with the current spacing) is 59mph - by travelling on average at around 78mph, and targeting single digit stops (which is risky). Above this point you will lose more time to longer charging than the time gained with extra speed.

    This is on a 85 with 19" tires. Other configurations will differ.
     
  2. gavine

    gavine Petrol Head turned EV Enthusiast

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    You SHOULD keep the J1772 adapter in the car though, since public charging stations use that connector. The UMC is good for charging at a Tesla store or service center in the event that their HPWC's are taken. The stores usually have NEMA 14-50's available for customer use.
     
  3. Bugeater

    Bugeater Member

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    Yea, not a dumb question at all...
    Even before we got our HPWC we would always take the UMC with us all the time. It was necessary when we went on a long trip over a year ago. I bought every one of the adapters! Unfortunately one of the adapters is NOT the one needed for RV parks with 30amp 120V hookups. You need an adapter. Even now if we went on another long trip we would take the UMC with us without hesitation. There are so many more options if you have it with you.
     
  4. Ugliest1

    Ugliest1 S85: "Sparky"

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    I'm currently in Reno, arrived last night. Left Victoria BC Sunday morning on the Coho ferry to Port Angeles, then the lovely drive down 101 to I-5, starting to head east at Mt Shasta. I just wanted to post saying that the superchargers change everything. Our route had superchargers every 100-120mi (160-200km), and the extent of my planning was to charge enough to get to the next supercharger, plus 20-50 mi (40-80km) depending on TripPlanner's Rated Miles estimate. This makes for very quick stops (usually 15-20 minutes) at the superchargers, which gives us a break to stretch our backs etc. We fluctuated between 20-50mi left on arrival at each supercharger. And as usual the car was ready before we were, at 90% of the stops.

    The first several months with the car, and on our 17,000km (11,500mi) trip, I took note of a whole bunch of numbers at every charge. But I don't want to have to do that, and, routes with superchargers make it superfluous. This trip I didn't record anything, and there was so much NOT range anxiety I can't believe it.

    I continue to be amazed, truly amazed at Tesla's strategic vision, planning, and execution. :)
     
  5. Bighorn

    Bighorn Top Supercharger

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    I just read part of the blog where the Edmunds' team wanted to break the Tesla cross-country record. They managed to cut 6 or 7 hours off, in light of the fact that Tesla faced blizzards and road closures. The average speed of the new record is 49.5 MPH.
     
  6. Shooter

    Shooter Member

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    Crowthorne, England
    I'm getting ready to drive from here in England over to Switzerland and back. Miles aren't too many, about 700 each way. Out on a Wednesday, go to the show on the Thursday, come back on Friday.

    At the moment, looks like only superchargers all the way although there is one stretch between chargers of 216 miles which is a bit tight based on what I've seen as my actual range across a mix of driving speeds.

    just hoping the Calais supercharger might be ready by March :) No worries then!
     
  7. David Bayley

    David Bayley New Member

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    Chad, many thanks for your excellent article on BEV range and charge planning. I am based in the UK and I am considering the purchase of a Model S as my next company car. I drive 36K miles/year and many trips are 250-300 miles. Tesla came to the UK only last year so the Supercharger network is not yet extensive but they are getting there. Unfortunately, most of the gaps are where I travel the most. The UK also has a lot of fast chargers with the Nissan Chademo plug so an adaptor to the Tesla Mennekes plug would fill in the gaps before the Superchargers become more common.
    Regards
    David
     
  8. MyJoule

    MyJoule Member

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    Tucson, Az
    I just completed an 1800+ mile trip and used Superchargers all but 3 times- (Chadamo's twice and one RV park 14-50)

    A few comments from my trip:

    1. If you drive 70-75MPH don't count on the range - as others have stated, to get the range as advertised you need to be around 300WH/M
    2 I did best matching the predicted range at about 60-65 MPH in rolling farmland-
    3. Superchargers- They are great- when they are working- I had an issue with one being down ( Perry) and while others have successfully charged there- it appears to be an input power stability problem some have successfully charged there. Tesla will advise you if you call them about status of a supercharger. I hope they eventually put the status on the car's screen. that would be helpful.
    4. Add some extra range at the supercharger- I will probably add about 50-60 miles more range than I need in the future at each charger- that way I can drive a little faster than 60 The energy prediction algorithm today is using the 300WH/m from what I can tell- so if you start with a 20-30% cushion and drive faster ( or use more than 300WH/M) then you will eat up the cushion before you know it.
    5. I think we'll have a problem in a couple of years between ICe'd charger stalls and more people using the superchargers across the country- I was amazed I saw another Tesla at 1/2 of the chargers I used ( I used 13 superchargers in 3 days) I also saw ICe'd spots in Independence and St Charles
    6. If you haven't done a road trip- do it- the cars are a dream to drive, and I drove my non-autopilot equipped car.
    7. As other have said- if you are unsure of getting there on the charge- start out slow and make sure you have enough range as you proceed, once you know you'll make it, you can speed up. ( I used this technique quite successfully between Independence and St Charles, I range charged to 265 at Independence and drove 64MPH till I reached mid way, then sped up to 70MPH- arrived at St Charles with 46 miles of range, so I could have sped up sooner.
    8. Chademo's are good- but two things- Usually only one stall- and not always 50 KW- I had both an in use one and a < 50KW one on my trip-

    Enjoy!
     
  9. ruby110

    ruby110 Member

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    I'm not surprised about ICing at St. Charles but Independence?? There must have been a big sale at the Bass Pro Shop!

    i agree, road trips are a dream if you can stay on the Supercharger highway.
     
  10. Bugeater

    Bugeater Member

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    Just finished a trip from Silicon Valley to Portland Oregon and back. 670 miles door to door. Took 13:20 up and 14:20 back. Our S said it would take 12:30 each way. Due to prior experience we always charge more than our S says to. We didn't start any leg with less than 10% predicted remaining while the S said to head out with just 4% remaining. The extra charging time and eating were what took the extra time. Oh yea, we used 4 SCs on the way up and all 6 on the way back. That's because we started at 100% charge in our P85 when we left and were able to skip Vacaville. The last charger, Woodburn, was unnecessary by simply charging a few minutes extra at Springfield. On the way back we started with about 150 miles range due to no destination charging in Portland so we charged at Woodburn. Since temps on the way back hit up to 107℉ we charged a bit more too.
     
  11. Khatsalano

    Khatsalano Member

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    Bugeater, I am about to do a similar trip right after TMC Connect. We are going all the way to Victoria and Vancouver, BC and back. On the way up, you were able to go from the Bay Area to Corning comfortably without range anxiety? Did you have to limit your cruise speed? EVtripplanner.com is putting my first leg at 253 RM, which is doable in my S85D. Did you do this on the way up:

    Corning
    Mt. Shasta
    Grants Pass
    Springfield

    Thank you for being a pioneer on the trail.

    - K
     
  12. Bighorn

    Bighorn Top Supercharger

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    Is there a reason to bypass Vacaville?
     
  13. Bugeater

    Bugeater Member

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    Yes. The first leg straight to Corning was a slight stretch and I slowed only a bit. Starting with ~160 rated miles it was OK though. I skipped Vacaville only because I could. More to charge at Corning but it kept saying I know needed to charge for 5 minutes or so at Vacaville. Didn't quite understand why... The worst part was that the nav really wanted me to turn around.
     
  14. smilepak

    smilepak Active Member

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    From Inland Empire to San Jose, I guess the toughest would be between Tejon Ranch and Harris Ranch. There isn't any charging stations in between that two spot huh. We usually stop at Kettleman in the past for GAS and IN/OUT, I guess no more with Tesla.

    The EVPlanner doesn't have 70D spec in here. But by looking at it, the 70D, it would be an extremely tight situation.

    Would you say speed multiplier 1.5 is a good scenario to use against, especially during this route the average speed would be 80-85 mph?

    Capture.JPG
     
  15. ra-san

    ra-san Member

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    Remember the speed multiple is a multiple of the "normal" speed of that segment, not of the speed limit. Note the segment mph of 104 in one of those lines :scared: 1.5 is probably a bit excessive.

    Lol. Just saw the 108 and 109 averages too. That'll be a harsh ticket if pulled over, not even mentioning safety and efficiency that'd be impacted by that average.
     
  16. Rocky_H

    Rocky_H Active Member

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    Wow, that 1.5 speed multiplier was good for a laugh. That would be why your average consumption is almost 550 wh/mile! I have good news for you--it's not as dire as you think.
     
  17. smilepak

    smilepak Active Member

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    :tongue: Glad to be of service lol. Wanted to do worst case scenario. Driving out of the greater LA, traffic gets you..

    what would be an average multiplier? 1.15?
     
  18. paulkva

    paulkva Member

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    One nice thing about EVTripPlanner is you can just try a bunch of different numbers / scenarios and see what it says. Try them out and see what the "segment mph" column says, though keep in mind that's an average that includes on/off ramp time, possibly some turns / local streets, etc. I'd guess that "1.0" on your route would be 70-75 mph cruising speed, so you probably want 1.05 or 1.1 if you want to drive 80-85 mph.
     
  19. CHGolferJim

    CHGolferJim Member

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    What math adjustment are 70D owners making when using EVTP? Are you making some trial runs and comparing results to what EVTP says for 85D? How about using an average of 85 and 60 projections (if latter is still and remains available)?
     
  20. travwill

    travwill Active Member

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    To play it safe with the trip planner I'd just use the 60 algo and not worry then much about the difference, it should definitely account for HVAC, any unaccounted for situations, and you can still use a small speed multiplier.

    On the overall topic though, if superchargers and destination charges are enough, shouldn't you just be able to use the built-in trip planner in car now?

    -T
     

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