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  1. R

    Too much regen in D mode

    I read the link, but it lacked much substance. Perhaps the last comment was closest to the reality of how things work. Nowhere have I suggested allowing a vehicle to run away in neutral. In fact, my comment about coasting has nothing directly to do with hills at all. The link only talked about...
  2. R

    Too much regen in D mode

    No, it's not unsafe. Being distracted or inebriated is less safe. My stopping time isn't reduces at all by coasting in neutral. You're the one making the claim, so it's up to you to provide the statistics of accidents caused by nothing other than being in neutral. I'm sure there have been...
  3. R

    Too much regen in D mode

    There is no added complexity of coast mode. It's simply programming each pedal to do 1 function only; stop or go. Again, we're not talking about constantly shifting between modes, using N, or riding the friction brakes. If the car had an optional coast mode, I would stay in that mode forever...
  4. R

    Too much regen in D mode

    We're not talking about riding the brakes down the grapevine in N, we're talking about having a true coast mode. If the car had a true coast mode, there would never be a reason to manually shift into N. The brakes are engineered appropriately to stop the vehicle regardless of regen. Imagining...
  5. R

    Hello from ChargePoint!

    Oilerlord is contemplating getting into the electron vending service; I love it. Actually, I'm interested to know this as well. If there was a decent ROI, I'd buy a few.
  6. R

    Too much regen in D mode

    But drivers had to learn to get used to the slight deceleration and creep introduced with automatic transmissions. I can't see the lack of slight deceleration causing a safety concern, and I certainly see a huge safety issue with allowing a vehicle to creep without any driver input. I've been...
  7. R

    Too much regen in D mode

    I'm annoyed that almost all manufacturers feel the need to carry over this useless behavior. As the lead engineer for the Bolt said, they wanted the car to slow at a rate that is similar to what drivers had experienced in other (automatic) vehicles. As many of us know, the slowing of an...
  8. R

    "propulsion power is reduced"

    Good info! Based on a previous comment, it appears the car will continue to drive with reduced power until reaching 0% state of charge. It would be great if Chevy included a %SoC gauge, but I'm sure aftermarket solutions can provide that info. Perhaps Torque with the correct PIDs programmed...
  9. R

    "propulsion power is reduced"

    Comments pasted from the other forum... If I owned a Bolt, I'd probably already have accidentally "tested" this. I've run out in every vehicle I've owned at least once. I have coasted into petrol stations 5 times, had to push a motorcycle about 1/4 mile once, and the longest walk I've had to...
  10. R

    In storage for 5 months in winter

    The battery can be safely stored down to something like -40 F. There is no need to heat the battery during storage unless the battery approaches this temperature. The real killer is heat. I would plug in if the car is subjected to high heat in a garage. 12v battery maintenance is the same as...
  11. R

    Tesla Model 3 - Specs released

    For some people, likely most people who can afford to spend $35,000+ on a new vehicle, tying up $1k to reserve a car just in case they want it is no big deal. There is a chance that the credit could get extended, so some may keep their reserved spot just in case. Since the deposit is fully...
  12. R

    Speed vs Efficiency with respect to total travel time

    You clearly have not read any of my posts, or those posted in the link above. Not only that, but speed has nothing to do with state of charge. I can arrive at a DCFC station with 1% remaining capacity regardless of if I drove 50 MPH, or 90. DCFC for the Bolt is incapable of charging at a rate...
  13. R

    Speed vs Efficiency with respect to total travel time

    This is close to my calculated sweet spot of 71 MPH. His comment on speed is: For some people, 75 MPH is not normal freeway speed. I know that's slow on California interstates, and some states have 80 MPH speed limits.
  14. R

    Speed vs Efficiency with respect to total travel time

    Neat experiment. I can cover that distance in 6 hrs, 30 minutes at 70 MPH in my Prius and burn only 9 gallons of fuel. I bet I could go 1000 miles on a tank of fuel if I drove 25 MPH. Perhaps even further since my engine would be off most of the time, only kicking on to periodically charge the...
  15. R

    Speed vs Efficiency with respect to total travel time

    For the purposes of easy calculation, we assume that battery efficiency is constant, but that's not true. Batteries are less efficient the more rapidly they are discharged. This is why Ah ratings are given along with the discharge time or C rate. The same battery fully discharged at 2C (30 min)...
  16. R

    Charge Session Info?

    I have Torque setup to display all of the above except kWh or Ah. I get bank voltages, bank internal resistance, %SoC (state of charge), bank battery temperature, 12v battery temp, inverter temps... Torque Pro is $10, and an ELM237 is about $10. Getting a remaining Ah or kWh reading would be...
  17. R

    Charge Session Info?

    As a tangent question, does Torque work with the Bolt, and are there PIDs to display percentage of battery charge? I get all this info through Torque on my Prius, but it can't tell me how many kWhs it was charged with. Just to complicate things, the amount of charge the battery accepts is less...
  18. R

    Speed vs Efficiency with respect to total travel time

    Rolling resistance has a lot to do with tire deformation. Continuously bending the tire generates heat, which is linear with speed. Go twice as fast, and you get about twice the rolling resistance. Range would be roughly similar though since at twice the rolling resistance, you get to the...
  19. R

    Speed vs Efficiency with respect to total travel time

    Of course this is hypothetical, which is why I'm emphasizing the math. I put together a spreadsheet and plugged in some numbers. At 50 MPH, the total trip time would be 23hrs with 3 charging stops. At 90 MPH, total trip time would be 21.1hrs and 10 charging stops. The sweet spot turned out to...
  20. R

    DC fast charger

    I've never jumped off a cliff onto rocks below, so my opinion of whether it's a good idea or not is invalid! I'm completely incapable of imagining any other scenario other than the ones that I have personally experienced. In fact, I didn't vote on who should be the next president of the US...
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