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Tesla LIED to us! (I maxed out a dyno in my car)

Discussion in 'Model S: Driving Dynamics' started by AC1K, Jul 11, 2014.

  1. AC1K

    AC1K Member

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    #1 AC1K, Jul 11, 2014
    Last edited by a moderator: Mar 13, 2016
    I was able to dyno my car!

    Tesla Official rated 416 HP at the Motor's Crank shaft
    Power at the wheels 436 HP!

    my battery was at 80% charge, 24ºC, Alt - 1158m (don't think altitude affects EVs tho)

    Video coming soon! just uploading it to YT

    some things need to be corrected,

    1) the tech couldn't attach a sensor to the motor's crank so "engine rpm" has to be recalculated as he took the wheel RPM (so multiply the RPM by 1000, then by 9.71 *approx*)
    2) the dyno maxed out at 2000 lbs·ft but math from the specs indicates 4301 lbs·ft at the wheels (should be more in real life)
    3) the horsepower and torque number is inaccurate as the car has so much power it smoked the tires on the dyno's drum so the wheels were not spinning 1:1 for the computer to measure accurately, basically it has slightly more power than what the computer thinks it has.

    2013 Tesla Model S P85 Dyno r.jpg

    Loading the P85 onto the Dyno


    Dyno RUN! x2!


    Found another angle! (Simark Control's go pro camera)
     
  2. jcaspar

    jcaspar Member

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    Thanks for posting! First dyno graph I have seen on a Model S. Very interesting.

    For comparison, my 1997 Dodge Viper:
    DYNOSAE.jpeg
     
  3. AC1K

    AC1K Member

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    Here is the comparison chart of all the car's dynoed at the show, not bad for something the size of a watermelon

    (Bad photo i know, it was super bright out and the TV had a glossy screen)

    scores.jpg
     
  4. Hodginator

    Hodginator Member

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    I'm ok with this kind of lie!
     
  5. igotzzoom

    igotzzoom Member

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    Maybe the rollin' coal diesel truck guys will have a change of heart when the figure out the "sissy" electric Tesla makes 2,000 lb-ft bone stock! :cool:
     
  6. zwede

    zwede 2013 P85+

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    Daym! Cool!
     
  7. igotzzoom

    igotzzoom Member

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    LOL. Would have liked to see the Model T dyno run! :biggrin:
     
  8. Caloncho

    Caloncho LongerTelomeres?

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    so cool
    2,000 lbs torque, really?
    so cool!
     
  9. tga

    tga Active Member

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    Remember the EV mantra - "Maximum torque at 0 RPM"
     
  10. igotzzoom

    igotzzoom Member

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    Still can't get over how quickly it spun the rollers! :scared:
     
  11. AC1K

    AC1K Member

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    actually no, 2000 lbs·ft is the dyno's maximum sensor value, the car is putting closer to 4300+ lbs·ft of torque to the wheels.

    the car is putting down so much force because of the reduction gear's torque multiplication the dyno cant even read the power.
     
  12. MikeC

    MikeC Active Member

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    That torque rating is awesome. I knew it was good but didn't know how much better than ICEs it was. And it's actually 2000+, off the charts...
     
  13. igotzzoom

    igotzzoom Member

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    FYI...I think it's the gear reduction that makes it possible for Chevy to claim the Spark EV has 400 lb-ft. :smile:
     
  14. flashflood

    flashflood Member

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    I'm having trouble wrapping my head around that number. Tesla claims the motor is 443 ft-lbs, and the gear ratio is 9.73:1, so indeed, the torque at the wheels should be 443 * 9.73 = 4310 ft-lbs. But, but... really? 4310 ft-lbs? That's, like, almost a mile-lb. My head is all 'splodey.
     
  15. igotzzoom

    igotzzoom Member

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    52425858.jpg
     
  16. Denarius

    Denarius Active Member

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    *Mind blown*
     
  17. Mayhemm

    Mayhemm Model S P85+ "Lola"

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    Whatever you do, don't test two Model S at once; you'll reverse the earth's rotation...
     
  18. LuigiV

    LuigiV Member

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    Isn't this a bit apples and oranges? All the other cars have had their torque values corrected for crank values whilst the Model S is the only one displaying wheel torque.
     
  19. zwede

    zwede 2013 P85+

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    You dyno in whatever gear is direct (1:1) on an ICE, so I'd say it's comparable. What is not comparable is if the dyno operator applied weather corrections (temp, humidity and barometric pressure) to the numbers. Those should not be applied for an electric car and would inflate the numbers slightly. Don't know if they were applied in this case?
     
  20. Solarguy

    Solarguy Member

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    Truly outstanding!!!!!
     

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