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Amarillo to Trinidad, CO supercharger stats - round trip

Discussion in 'Texas' started by reddy, Sep 10, 2015.

  1. reddy

    reddy Member

    Joined:
    Jan 26, 2013
    Messages:
    427
    Location:
    Amarillo, TX
    Although Amarillo's supercharger is still in eternal 'Coming Soon' status, it could be useful for Texas to Colorado drivers to know what the drive is like from Amarillo to the Trinidad SC.

    Executive Summary:
    Westbound to Trinidad: Trip at reduced speed consumed 252 of my 261 rated miles.
    Eastbound to Amarillo: Easily made trip with lots of reserve energy


    Here was my environment:
    2013 Model S 85, 19 inch wheels
    Ambient temp 95 in Amarillo , clear weather, 10mph wind from SSW
    227 actual miles.

    Amarillo to Trinidad
    Left Amarillo with 261 RM. Evtripplanner predicted arrival with 8 miles remaining. Because that is a narrow margin of error, I drove the Amarillo to Dalhart segment at 63 MPH, and stopped at the free City of Dalhart RV park to add 24 miles of range. I left Dalhart with 205 RM.

    The segment from Dalhart to Capulin was a gentle uphill climb almost all of the way, and was using over 350 wh per mile. I reduced speed to 60mph west of Clayton NM. After getting to Capulin, there was a relatively steep drop into Raton NM.

    At the US87 - I25 junction I had 53 RM. I headed north up Raton Pass at 60mph and reached the crest with 35RM. Once over the pass, it was virtually straight downhill, and drove the next 11 miles at 70mph and arrived at the Trinidad SC with 33 RM remaining. If I had not added the 24 RM in Dalhart I would have made it with 9 miles reserve. I used 318 wh/mi on the Dalhart to Trinidad portion. Given that there is often a prevailing headwind, I don't think I would drive Amarillo to Trinidad without topping off somewhere en route.

    Trinidad to Amarillo
    Temp 78, partly cloudy, 14mph wind from SW
    Left Trinidad with 261 RM. Not realizing that the return trip was much easier, and wanting to avoid another stop in Dalhart, I drove at only 62mph from Trinidad to Capulin. Once I got to Capulin and saw that my usage was only 290 wh/m I dialed up to 65 MPH, and at Dalhart increased to 70mph. I arrived in Amarillo nonstop with 36 RM remaining, and 274 wh/mi energy use.

    Bottom line:

    If you want to try Amarillo to Trinidad nonstop, keep your speed in the 60-62mph range, hope for no headwind, and you will need to have 25 or more rated miles remaining once you get to the Hwy 87 - I25 intersection to safely reach the top of Raton Pass. If you don't have that much left, there is a KOA in Raton.

    The Trinidad to Amarillo trip is a breeze, since it is all downhill once you reach Capulin. I probably could have driven close to 70mph most of the way, but be aware that winds here can get extreme, and if they are going against you there are limited options to charge.

    The identified RV parks for charging if you guess wrong are:
    Dalhart - City RV Park is free
    KOA - Clayton NM
    Capulin RV park - right on US 87 so very convenient
    KOA - Raton
    NRA Whittington Center RV Park - (Not on Plugshare, but the people there tell me they have 50amp service, and are looking forward to their first EV. A bit out of the way SW of Raton. But they have a cool NRA Museum.)
     
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  2. snellenr

    snellenr Member

    Joined:
    Aug 5, 2013
    Messages:
    309
    Location:
    Houston
    Thanks for the trip report, Reddy... That would be a fun drive in an S -- at speed, and with all of that power to pass the long lines of trucks & trailers that stack up between passing lanes. Not so much, the way you had to do it. That climb up Raton Pass would be a killer at the tail end of an extreme-range leg...
     
  3. Twiglett

    Twiglett Single pedal driver

    Joined:
    Oct 3, 2014
    Messages:
    1,036
    Location:
    Austin
    It would be nice to have enough to have a quick stop at Capulin volcano, thats always fun but quite steep :)
     
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  4. houstonian

    houstonian ಠ_ಠ

    Joined:
    Sep 2, 2013
    Messages:
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    Location:
    Houston. Duh.
    Per the 2017 Tesla.com supercharger map it looks like a SC is planned/wished for Clayton NM. If this comes online it will go a long way to allowing lower capacity Teslas to do the direct Trinidad / Amarillo drive on 287/87.

    Also for those going to TX, it looks like a supercharger location is planned for Wichita Falls. This one in addition to the new one in addition to the new one in Childress TX should open up 287.
     
    • Informative x 1
  5. kort677

    kort677 Active Member

    Joined:
    Sep 17, 2015
    Messages:
    3,309
    Location:
    florida.
    I made that trip last winter in an S90D. you need to start with a max charge and then keep it below 65mph, arrived in Amarillo with around 30 miles of range. initially the trip planner kept warning me to slow it down so I drafted a truck for awhile on 287 but once I forced a recalc it showed that I'd make it with room to spare.
     
  6. reddy

    reddy Member

    Joined:
    Jan 26, 2013
    Messages:
    427
    Location:
    Amarillo, TX
    Clayton will be a great location for traffic between Texas and Colorado. It will eliminate all range anxiety and we won't need to top off at the Dalhart RV park anymore. If we hear about any construction I'll go check it out.
     
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  7. houstonian

    houstonian ಠ_ಠ

    Joined:
    Sep 2, 2013
    Messages:
    64
    Location:
    Houston. Duh.
    Trinidad to Amarillo Report:

    Car: S60D (software limited 75kw battery), Post Refresh
    AP: 2.0
    Miles Driven: 242
    Rated Miles Used: 209
    Average Efficiency: 221 wh/mi
    Battery Usage: 53.41kWh or 98%
    Average Speed: 60mph
    Elevation Change: -2,623
    Outside Temp: ~63-77 F

    Notes: I-25 to 287, 287 to 87, 87 to Amarillo via Dumas. Made use of drafting trucks whenever possible. The trucks I drafted tended to cruise at 65mph.

    Originally operated under the assumption of 60kw usable battery power. However, this was inaccurate. Per TeslaFi's logs, this drive consumed 53.41 kWh = 98% of the battery implying 100% yields ~54.4 kWh. A subsequent drive later in the day (Childress SC to Arlington SC) used 52.17 kWh = 96% of the battery, again confirming 100% to be ~54.4.

    For refreshed S60D drivers (and maybe refreshed S60 and X60D drivers?) be sure you understand the usable KW of your battery. I made the Trinidad to Amarillo drive by limiting speed, closely tracking consumption, and drafting trucks. Certainly doable, but you 60's need to be on their A game when doing this drive.

    If you're planning on driving Amarillo to Trinidad, you will want at least 10% of your battery left when reaching Raton and turning onto 25. That will get you over the pass and to the Trinidad Supercharger. For me, this requires I expend no more than ~48.5kw from Amarillo to Raton to ensure enough power remains (54.4 - 48.5 = 5.9) remains to get over the pass and to the Trinidad SC.

    Have not yet attempted the reverse drive but am game to do so in the summer. The idea of fooling around with RV parks, no heat, and strong winter headwinds just don't appeal to me. Will report back if I do.

    Also, this entire post may become moot once Tesla opens their Clayton SC, but until then...
     
  8. Piney999

    Piney999 Member

    Joined:
    Feb 27, 2016
    Messages:
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    Location:
    High Plains, Earth
    I can't believe I found this. Thank you for the write up! I was going to try the Amarillo to Trinidad run next week, but after reading this, I will take the long way round. Thank for the well written post.
     

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