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7 G's in a Hot Wheels Loop - Page 2 — Parallax Forums

7 G's in a Hot Wheels Loop

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Comments

  • ercoerco Posts: 20,259
    edited 2012-07-02 08:48
    Dunno, but I edited another working link into my first post.
  • ercoerco Posts: 20,259
    edited 2012-07-02 08:52
    davejames wrote: »
    ...the videos have been removed.

    Why for?

    Possibly to avoid an infinite loop? :)
  • davejamesdavejames Posts: 4,047
    edited 2012-07-02 09:52
    erco wrote: »
    Dunno, but I edited another working link into my first post.

    ...H*ly Cr@p!!!!!!!!!!

    I nearly had a panic attack just watching!

    :sick:
  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2012-07-02 10:06
    Moebius strikes again......... They used my name.

    If it really was a Moebius Loop, you would have to shift to negative G force and then back to positive G force. Something would be very seriously strange.
  • ercoerco Posts: 20,259
    edited 2012-07-02 10:06
    That's about as much adrenaline as you can get at 50 MPH.
  • ercoerco Posts: 20,259
    edited 2012-07-02 10:56
    On Yahoo and ABC news now. Good video attached with some background info.

    http://gma.yahoo.com/blogs/abc-blogs/hot-wheels-challenge-sets-world-record-162920297--abc-news-topstories.html
  • ercoerco Posts: 20,259
    edited 2012-07-02 11:27
    Oops & ouch! Rally car crashes & burns in a practice jump right beside our loop. Spectators are surprisingly and dangerously close.
  • Duane DegnDuane Degn Posts: 10,588
    edited 2012-07-02 14:15
    Ouch is right.

    According to this article he broke his ankle and had other injuries. I'm glad he wasn't hurt worse than he was. That sure looked like a nasty crash.

    Edit: This ESPN article has some more info and (what appears to be) the same video with some sound.
  • W9GFOW9GFO Posts: 4,010
    edited 2012-07-02 15:56
    The report says it caught fire after he got out but in the video you can clearly see the fire started before the car came to rest. Thirty seconds later the flames filled the passenger compartment. It's a very good thing he escaped on his own. If he had needed to be rescued it would have been very bad.
  • GordonMcCombGordonMcComb Posts: 3,366
    edited 2012-07-02 16:36
    erco wrote: »
    Spectators are surprisingly and dangerously close.

    They sure are! And they're general public, too. Had the stunt not resulted in a crash with injuries, or had not been videotaped for all the see, they might have gotten away without a citation. But you can bet the X Games folks will be getting one now. Chump change to them, but still out of their pocket.

    Once their insurance carrier sees this I wouldn't want to pay their premium for next year. You couldn't buy enough liability insurance had that car exploded, or careened off to the right, and over those pitiful concrete barricades. They were very lucky this time (and so was Mattel, quite frankly, for simply being associated with the stunt - go from a shot of "Hot Wheels" to the car bouncing off the platform and into a bunch of people...real good PR on that one!).

    -- Gordon
  • Mark_TMark_T Posts: 1,981
    edited 2012-07-03 12:11
    'Not buyin' it. The video said the entry speed has to be between 48 and 52mph. If the structure isn't sound at 53 mph, it won't be at 52 mph, either. There has to be another reason.

    -Phil

    They have to be able to take the jump at the right speed after exiting the loops, that is more critical!

    If you just go fast enough to just stay on the top of the loop and are coasting then you pull 6g at the bottom (and 3g at the 3 and 9 o'clock positions). Simple mechanics question!

    KE = 1/2 m v^2
    centripetal force = m v^2 / r = 2 KE / r
    PE = mgh, varies by 2mgr between top and bottom of loop.
  • ercoerco Posts: 20,259
    edited 2012-07-03 15:47
    Although it looked like second-place Tanner Foust landed hard on the ramp, it was the winner Greg Tracy who sustained car damage during this stunt, as these pics show. http://blogs.insideline.com/straightline/2012/07/hot-wheels-double-dare-loop-the-aftermath.html

    Turns out they did have some super-stiff suspension, as evidenced by the coil spring falling off of the car!

    More at http://www.wired.com/autopia/2012/07/hot-wheels-double-dare-loop/
  • GordonMcCombGordonMcComb Posts: 3,366
    edited 2012-07-03 17:50
    It almost looks like they didn't compensate for the weight of the driver.

    Is it true (from the comments on the first blog) these are Mitsubishi Lancer Evolution cars? From what I can see in other pics from the Web, the exhaust is on the right rear, which means the gas tank is toward the driver's side. Assuming enough gas in the tank to feed the fuel pump through the loop, and the weight of the driver, they should have used a couple hundred pounds of ballast on the passenger side.

    Erco, next time volunteer to sit shotgun with the driver. Will make for a better landing, and a funnier video as you get out of the car at the end!

    Had you entered your Corvair it would have lost suspension parts, too, and those *before* going into the loop. :lol:

    Here's the other guy that liked Corvairs:

    http://flickriver.com/photos/autohistorian/sets/72157623190214199/

    -- Gordon
  • ercoerco Posts: 20,259
    edited 2012-07-09 16:54
    At least the Hot Wheels stunt didn't shut down the whole of Los Angeles. I wonder how Ken Block pulled that off in $an Franci$co. WOW. And the sidewalks are deserted, too. Where did all the lookie-loos go?

    Lovin' the donuts around the motorcycle at 6:15.
  • Peter KG6LSEPeter KG6LSE Posts: 1,383
    edited 2012-07-09 17:16
    Oh darn Iam late for work again . is alll I can think of
  • Martin_HMartin_H Posts: 4,051
    edited 2012-07-09 17:51
    At one point you catch a glimpse of the position of the Sun and it looks fairly low on the horizon. So I would guess that they filmed this early on a Summer morning. You would be surprised how deserted the streets are at 5:30 AM. The movie "28 Days Later" used that technique to film in an empty London.
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