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Thread: development of the ducktail

  1. #61
    Senior Member ejboyd5's Avatar
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    While discussing aerodynamic enhancements, let's remember the famous Luftbremse experiment for the 300 SL. Although it offered little downforce effect in the running position, the braking effect when deployed was spectacular. Actually, the breaking effect was also spectacular in that it created extreme stress throughout the entire vehicle.Name:  300 SL Luftbremse (2) 54689.jpg
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  2. #62
    The E40 EVFF sticker was assigned to the rally car of the Polish driver Sobiesław Zasada
    To what extent does it patch the gap in the history of 7707 KW


    https://www.early911sregistry.org/fo...l=1#post369190

  3. #63
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    Quote Originally Posted by ejboyd5 View Post
    While discussing aerodynamic enhancements, let's remember the famous Luftbremse experiment for the 300 SL. Although it offered little downforce effect in the running position, the braking effect when deployed was spectacular. Actually, the breaking effect was also spectacular in that it created extreme stress throughout the entire vehicle.
    Located over the rear axle, I would think it would cause the front axle to lift somewhat and thus reduce the front brake ability plus steering effects. I can see that the roof structure supporting that wing is not too substantial. I am not sure when such moveable aerodynamic devices were banned, but I know Porsche also experimented with them.
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  4. #64
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    Quote Originally Posted by haul View Post
    …concerning the dymo lettering….

    E40 EVFF

    the E40 is explained by Hugh,
    the rest we had over here
    https://www.early911sregistry.org/fo...he-werks/page6

    VFF -> Vorserien-Freigabe-Fahrzeuge (VFF)
    E might be “Erprobung” or “Experiment” or ?

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  5. #65
    Senior Member patrick911's Avatar
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    I agree. As discussed with Hugh here, it looks like EVFV stood for "entwicklung, Versuch, Fahrverzuch" which roughly translates as 'development, trial, driving test', so the "E" is likely "entwicklung" (development).
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  6. #66
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    I’ve been following this thread with interest.

    Whilst researching the development of the ducktail recently I came across an article by by Karl Ludvigsen. It included this extract:

    Practical tests refined the ducktail’s final shape, wrote Leffingwell: “Peter Falk’s test department ran countless laps to determine its best placement and height. Lapine himself made designs of the entire car. When his styling department presented the first actual car—it was just before production start—Falk was startled.

    “‘The Bürzel is too low,’ he exclaimed. ‘Why is it lower than we tested it?’

    “‘Because it looks better,’ Lapine told him.”

    The final design, avowed Falk, was 15 centimeters lower than they wanted. It met Tony Lapine’s aesthetic standards and as an added benefit allowed full rear visibility.

    I wondered whether anyone had any photos of the 15cm taller ducktail being tested?

  7. #67
    Senior Member Chris Pomares's Avatar
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    These make a big difference. Especially the front. 80 to 100 mph in my SWB car is very settled, and a big difference in crosswinds. I made it in 3 pieces in case it got bent. I have extras and can replace them if necessary. The rear decklid is off a SC. The original decklid and grill are tucked away in a box.

    By the way the fog light covers are made to come off in a minute or two if the car needs more air to the oil coolers. The color matched originals, boxed.

    I bought grills some time back for driving lights. For a cleaner look I went with some lights I bought at a BMW motorcycle shop. I use them for daytime driving lights when I'm in traffic.
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