TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Chevy Bolt - 200 mile range for $30k base price (after incentive)

Discussion in 'Electric Vehicles' started by FredTMC, Jan 9, 2015.

Tags:
  1. RiverBrick

    RiverBrick Active Member

    Joined:
    Mar 23, 2014
    Messages:
    1,541
    Location:
    Québec
    You cannot jump to the conclusion that they are liars. The image is from their CCS stop. Doesn't the lightning bolt icon mean the heat was running off shore power? As long as consumption isn't counted when the car is off or in park, cranking the heat to max when quick charging would only help their efficiency while on the road.

    Now that Bolts are starting to be delivered in Canada, more cold-weather trip-reports are coming in. Here is the screen from a 73-mile trip in 10F weather. They started in a warm garage, otherwise, would there have been battery conditioning?

    The owner reports he was using Michelin Xice-i3 tires and followed posted limits, which would have been roughly 80% 62 mph, 15% 43-55 mph and 5% 31-37 mph. Heat set to 68F. He did 21% better m/kWh wise than the reporter. Part of it is thanks to dropping 450 feet in altitude.

    Photo thanks to Stephane Tremblay.
    16603068_10155213868048814_4042516155948680339_n.jpg
     
  2. Yggdrasill

    Yggdrasill Active Member

    Joined:
    Feb 29, 2012
    Messages:
    3,048
    Location:
    Kongsberg, Norway
    I've been working on a range spreadsheet for the Model 3, but I've also included the Bolt. Wind matters *a lot*, so with low temperatures and a headwind, it's not surprising to get under 150 miles. Model 3 high speed range
     
  3. scaesare

    scaesare Active Member

    Joined:
    Mar 14, 2013
    Messages:
    4,569
    Location:
    NoVA
    Would have allowed for ~177 miles using 60kWh of energy. That's losing 26% of the rated 238 range in weather 20+ degrees below freezing. Not bad.

    Although like you say with an elevation drop. And I suspect 68 deg setting in 10 deg weather might be a bit conservative for many. I'd say the cold weather performance for those conditions is such that counting on losing ~1/3rd of your range is likely... similar to what I see on my S.
     
  4. McRat

    McRat Active Member

    Joined:
    Jan 20, 2016
    Messages:
    2,760
    Location:
    Norco, CA
    Earlier in the thread, there was debate about whether the CCS infrastructure today would allow a Bolt EV to travel to Las Vegas from SoCal. Apparently somebody has just done that. He cut it very close on the return trip by only charging to 80% before leaving Vegas to Victorville. But the trip up with 90% charge did it with room to spare, even with the Mountain Pass, CA altitude of over 4,700'. Note, there is no CCS charging in Baker or Barstow.

    So one of the most common long trips that Californians make was easily accomplished by the Bolt EV without any improvement in infrastructure yet. Only the Teslas and the Bolt BEV's can make this trip without long layovers, if at all.
     
  5. JohnSnowNW

    JohnSnowNW Active Member

    Joined:
    Feb 13, 2015
    Messages:
    1,621
    Location:
    Minnesota
    Define "easily accomplished." How long did it take him, and how did he drive the vehicle?
     
  6. RubberToe

    RubberToe Supporting the greater good

    Joined:
    Jun 28, 2012
    Messages:
    1,186
    Location:
    Pasadena, Ca
    Please share a link to the story with us.

    RT
     
  7. McRat

    McRat Active Member

    Joined:
    Jan 20, 2016
    Messages:
    2,760
    Location:
    Norco, CA
    I'm sure he would not mind. I hope: Bolt EV Weekend Trip to Zion
     
  8. McRat

    McRat Active Member

    Joined:
    Jan 20, 2016
    Messages:
    2,760
    Location:
    Norco, CA
  9. diamond.g

    diamond.g Member

    Joined:
    Nov 5, 2015
    Messages:
    706
    Location:
    Fredericksburg, Virginia
    • Disagree x 1
  10. JRP3

    JRP3 Hyperactive Member

    Joined:
    Aug 20, 2007
    Messages:
    11,094
    Location:
    Central New York
    No. A more efficient motor design with better cooling, or more heat tolerance, could allow a higher peak HP without negatively effecting range.
     
  11. diamond.g

    diamond.g Member

    Joined:
    Nov 5, 2015
    Messages:
    706
    Location:
    Fredericksburg, Virginia
    What is inefficient about the current motor?
     
  12. JRP3

    JRP3 Hyperactive Member

    Joined:
    Aug 20, 2007
    Messages:
    11,094
    Location:
    Central New York
    Nothing that I'm aware of but there are always ways to improve it, my point was that a motor with a higher peak HP rating doesn't necessarily mean it's less efficient or would negatively impact range. Unless of course you use the extra HP all the time.
     
    • Like x 1
  13. diamond.g

    diamond.g Member

    Joined:
    Nov 5, 2015
    Messages:
    706
    Location:
    Fredericksburg, Virginia
    Ah. Staying off the go pedal is important in staying efficient.
     
    • Like x 1
  14. scaesare

    scaesare Active Member

    Joined:
    Mar 14, 2013
    Messages:
    4,569
    Location:
    NoVA
    I wonder what those are, and how that compares to the flow of traffic.

    Having grown up in Northern California, and having driven to/from LA, I know that in those areas sticking to posted speed limits will having people blowing by you...
     
  15. Az_Rael

    Az_Rael Supporting Member

    Joined:
    Jan 26, 2016
    Messages:
    1,943
    Location:
    Palmdale, CA
    People will be passing you, but you wouldn't be the slowest thing on the road. Large trucks and RVs usually hold that spot. I normally drive at most 5 over and that seems to work out fine between here and Vegas. Just stay out of the fast lane.
     
  16. stopcrazypp

    stopcrazypp Well-Known Member

    Joined:
    Dec 8, 2007
    Messages:
    8,197
    I haven't taken LA to Las Vegas, but I know on I-5 to LA to keep up with traffic, you have to go at least 5-10 mph above the limit (some cars are way above this). The annoying thing is that there is only two lanes, so if you can't keep up, you have to go on the right lane. That lane is in horrible condition because of the trucks and even though they typically are going 10 above the truck limit, that is still only 65mph (5 below limit).
     
    • Like x 1
  17. scaesare

    scaesare Active Member

    Joined:
    Mar 14, 2013
    Messages:
    4,569
    Location:
    NoVA
    Yeah, I-5 is thee route I've taken from the Bay Area to LA most of the times I've driven it. Driving at the limit for that stretch would be painful.

    As I mentioned in another post (regarding need for more than current range in EV's), it would be nice not to have to be stuck in the slow lane passed by everything else on the road. And I don't want to unfairly bash the Bolt, as all EV's will take a hit with increased speed, it's interstate speed efficiency with it's Cd has been questioned. While it's cool that the person in the article was able to make that journey, I'm not sure that it's representative of how most people will want to drive it.
     
  18. McRat

    McRat Active Member

    Joined:
    Jan 20, 2016
    Messages:
    2,760
    Location:
    Norco, CA
    Unlike more intelligent state governments, California has a 55 mph slow lane for trucks or those with trailers.

    The flow of traffic in the right lanes is normally 50-65 mph.

    But yes, in normal states, speed limits can be as high as 85mph and trucks and trailers can travel that speed too.
    Technically if you are running the I5 during the busy hours (or when the Killer Fog is running up the body count), one semi passes another, and the 200 cars that are blocked behind them are going 50 or less because every frogger in a Bimmer is bouncing between the two lanes that aren't going anywhere, touching off a sea of brake lights.
     
  19. wdolson

    wdolson Supporting Member

    Joined:
    Jul 24, 2015
    Messages:
    3,139
    Location:
    Clark Co, WA
    The smaller motor in the S/X is a bit more efficient than the larger motor of the P version. For one thing they weigh less, which helps, but the angular momentum is larger for the larger motor, which contributes to efficiency. A motor with a smaller rotor would be more efficient overall. But electric motors are so efficient to begin with, the improvement would be tiny, at best it would be a few percent. The difference in range between the Model S 100D and P100D is about 6%. To get reasonable performance from the Model 3 with a smaller motor, it probably can't be much smaller than the smaller motor on the Model S/X.
     
    • Informative x 1
  20. wycolo

    wycolo Active Member

    Joined:
    May 16, 2012
    Messages:
    2,544
    Location:
    WY
    > What is inefficient about the current motor? [diamond.g]

    GM uses permanent magnet motors geared to turn lower rpm. Tesla uses wound rotors and uses higher rpm gearing. Once the M3 is released it might be possible to run tight comparisons with the Bolt to try to rank these variables. But based on my experience with the 'monstrous' Spark EV motor I must say that it is very efficient. So motor size is not necessarily an impediment to energy saving esp when the tall gearing is always there to reduce rotational inertia. [too many variables, so little time . . . ]
    --
     

Share This Page