What's new
By:

Elfin's latest activity

  • E
    Elfin replied to the thread Gravity GT - acceleration data (Dragy measured).
    Yeah but it's not accurate for the third derivative of track accurate. speed = distance/time acceleration = distance/time^2 jerk =...
    • 1748730648239.webp
    • 1748730989573.webp
  • E
    Elfin replied to the thread Gravity GT - acceleration data (Dragy measured).
    Doesn't look like draggy is accurate enough to measure differences in "jerk" (the rate of change of acceleration) and it probably...
  • E
    Elfin replied to the thread Gravity GT - acceleration data (Dragy measured).
    That's just the way single gear EVs accelerate, constant torque and then constant horsepower (with some rolloff at very high speed.) As...
  • E
    Elfin reacted to 037's post in the thread Gravity GT - acceleration data (Dragy measured) with Like Like.
    Hello, I have been trying to get Borski to measure GT performance and I have failed. Instead everyone had to wait a good 6 months for...
  • E
    Elfin replied to the thread Gravity EPA docs are here..
    I agree with most of what you said but the 21/22 and 22/23 data is fake. There is a 0% chance that all three coefficients are exactly...
  • E
    Elfin reacted to flarbear's post in the thread 400kW Gravity Charging! with Like Like.
    I don't think it is redundant. The "current" in DC is standing in for "nature/directionality of flow" whereas the second use of current...
  • E
    Elfin replied to the thread 400kW Gravity Charging!.
    It's worse than that, kW is not a unit of current. I think the Gravity can accept DC current of up to 500 Amps.
  • E
    Elfin reacted to msaunders9430's post in the thread 400kW Gravity Charging! with Haha Haha.
    In the EPA documents for the Gravity posted on the forum today, page 9 of the Application for Certification says the Gravity max power...
  • E
    Elfin replied to the thread Gravity Plan B.
    Yep, probably going to be more expensive than Gravity. The Taycan is more expensive than the Air.
  • E
    Elfin replied to the thread Gravity Plan B.
    Any engineer will tell you it's a dumb slogan too, engineering is all about compromises. Though being constantly behind schedule is...
  • E
    Elfin replied to the thread Gravity EPA docs are here..
    No, I'm quoting the video posted which is about a Model 3 Performance. A small correction, the OEM 20" PZ4 tires are all season but they...
  • E
    Elfin reacted to 037's post in the thread Gravity Plan B with Like Like.
    Plan B…pretty sure this is a first post where you keep your existing car… I’m in a 2020 Lincoln Aviator (built right after Covid lock...
  • E
    Elfin replied to the thread Gravity EPA docs are here..
    One is running summer tires and the other is all seasons... Also the Performance wheels are staggered so at least the rear is wider.
  • E
    Elfin replied to the thread Gravity EPA docs are here..
    Yeah, the lbf (mostly rolling resistance) and lbf*v^2 (aero drag) terms are both exactly the same with 4 digits of precision. They...
    • 1748613861480.webp
  • E
    Elfin replied to the thread 20-ish mile range difference between 5 seat and 7 seat Gravity?.
    This mystery was solved. When calculating the efficiency the EPA rounds to 500lbs. The 3 row versions are calculated at 6500lb and the 2...
Show older items
Back
Top