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Roadster wins "Race the Runway"

Discussion in 'Roadster' started by djp, Sep 11, 2012.

  1. djp

    djp Roadster 2.0 VIN939

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  2. smorgasbord

    smorgasbord Active Member

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    1/4 mile in 10.39 seconds? That's more than a couple seconds faster than a Roadster should be able to do.

    Someone got some upgrades?
     
  3. Tesla 940

    Tesla 940 Member

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    10+ second?

    I would like to know how the 1/4mile dropped about 2 seconds from 12+

    I'd like to know the 0-60 time!
     
  4. chris22104

    chris22104 Member

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    Strong tailwind gust?!
     
  5. Doug_G

    Doug_G Lead Moderator

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    Yes, it was me. No, I have no idea how I got that time. I will say that the Roadster launched like a ton of bricks and the grip was spectacular on the runway. Honestly the run did feel really fast. My later runs were 12.6 seconds, but that was after I did a bunch of fun runs for the public, and I was expecting it to be slower because the motor was hot and the pack lower.
     
  6. TEG

    TEG TMC Moderator

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    #6 TEG, Sep 11, 2012
    Last edited by a moderator: Mar 13, 2016
    Pic of his car there:
    race-the-runway-65.jpg

    That is strange that you could get times that quick. Did you grab a flash memory log to check the results?
    Usually the Roadster is so predictable and consistent. And usually not quite that quick in the 1/4...

     
  7. djp

    djp Roadster 2.0 VIN939

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    Congrats - I would have never expected a ton of bricks to launch that fast! What was your SOC for the run? TC on or off? Fantastic result.
     
  8. wiztecy

    wiztecy Active Member

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    :) Awesome Doug! :)
     
  9. TEG

    TEG TMC Moderator

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    Maybe Doug has a top secret motor upgrade, but he isn't authorized to talk about it just yet! :wink:
     
  10. brianman

    brianman Burrito Founder

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    Don't care. Unqualified: Well done, sir!
     
  11. dsm363

    dsm363 Roadster + Sig Model S

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    Awesome. That looks like fun.

    We probably shouldn't be talking about the Roadster and bricks in the same sentence though.:smile:
     
  12. Doug_G

    Doug_G Lead Moderator

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    #12 Doug_G, Sep 11, 2012
    Last edited: Sep 11, 2012
    To answer the various questions:

    I figured my first run would be my best, because I had volunteered to do fun runs at lunch (members of the public make a donation and get a free ride in an exotic), and that would lower my SOC and heat up the motor. As it turned out the weather was pretty cold in the morning, but very hot in the afternoon.

    For the start of the first run my SOC was 82%, pack temperature was at 28C, motor 21C, PEM 37.5C. Performance mode on. Traction control off.

    The 1/4 mile was timed with about a 1 foot roll-out, so no reaction time factor here. That also should have made everyone's times a little faster. In addition they measured top speed at the 1/2 mile using a radar gun, but that's not the Roadster's forte.

    Some people complained about the grip in the morning, but not me. The runway had a sandpaper rough surface. It's probably lucky that I didn't bother switching in my A048's; they wouldn't have liked the cool temperatures. The AD08's hooked up beautifully and there was NO wheel spin whatsoever when I launched.

    I've never drag raced before, but I've certainly been to the track. I've done this sort of acceleration, and been at these sorts of speeds before. Yet somehow this particular acceleration run felt especially exhilarating. Even so I was really floored when I was told what my time was.

    Yes I downloaded the log, but it's very hard to compare the runs. It only updates once a second and of course the samples all happened at different offsets relative to the launch time.

    And no, I don't have any top-secret motor upgrade or firmware hack. My car is totally stock.

    Edit: Oh yeah... here are the full results: 2012 Race Results | Race the Runway. Apparently I smoked everything except the bikes.

    Funny story... heard this the next day. One of the guys from Calabogie Motorsports Park had specially prepped two cars for the race. The poor guy had to tell his friends that he had the two fastest gas powered cars at the event. :biggrin:
     
  13. TEG

    TEG TMC Moderator

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    OK, that is not a typical 1/4 mile measurement then. Usually the clock starts when the "tree turns green", and reaction time is a factor.
    Also, the Roadster does tend to take a moment to hit its' stride. So, I think your times were better than usual 1/4 mile times because of this different approach to timing it.
     
  14. bmek

    bmek Member

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    OK, in this event, apples for apples, the Roadster came out on top. That is way cool ...
     
  15. TEG

    TEG TMC Moderator

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    Yes! There was some serious competition there too!
     
  16. brianman

    brianman Burrito Founder

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    @Doug_G - I think you officially have taken the cake for the "what have I smoked" thread. At least for a few days. :)
     
  17. TEG

    TEG TMC Moderator

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    [​IMG]
     
  18. Tesla 940

    Tesla 940 Member

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    Reaction Time & Roll-out

    Reaction Time and a 1' roll-out (Not absolutely sure what that means but I can guess) would in no way account for a 1/4 mile time difference of 2 seconds.

    I also guess that all car manufactures deduct the "reaction time" in determining the "official" 1/4mile time. People are interested in what the CAR can do - not clouding the time with human reaction time.

    Thoughts?
     
  19. Doug_G

    Doug_G Lead Moderator

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    That isn't relevant, because we were comparing car-to-car, not manufacturer's specs.

    You can easily get different numbers depending on the methodology. Tesla claims 4.4 seconds for the Model S Performance, but the reviewers came up with 3.9.

    Other than that, I have no idea. It is what it is. Everyone had a lot of fun and we raised money for the museum.
     
  20. TEG

    TEG TMC Moderator

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