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Recent content by RoterHelm

  1. RoterHelm

    Kz vs. speed

    Hi, cibachrome. Sorry, I'm not sure understand you. My English is bad. I have not the means to conduct such a test. I love to see this video. Regards, Roter Helm
  2. RoterHelm

    Kz vs. speed

    True, you're quite right, Greg. This issue could be enough for a paper. That is not my intention now. It could to take the stiffness constant. It´s a Formula Ford ("No Downforce"), is not critical the ground clearance. Thank you
  3. RoterHelm

    Kz vs. speed

    Hi, i've been thinking about this and I have some doubts: If the graphics are deflecction (m.m) vs. Load (Kg), is not entirely correct to obtain the vertical tire stiffness( Load*9.81/deflecction) of calculating the slope of the line. The force that causes a certain deflection is the weight +...
  4. RoterHelm

    Starting point (FF 1600 Duratec)

    Ok, patprimmer. I appreciate the help. Thank you very much. Regards
  5. RoterHelm

    Kz vs. speed

    Hi, Greg Yes, that is. The graphics I have are deflection (mm) vs. Load (Kg) for different camber angles and different pressures. Then, I have the vertical stiffness for different camber angles and different pressures, but all these plots are at 125 kph. My intention is to know, for a given...
  6. RoterHelm

    Kz vs. speed

    Hi, excuse me my bad English. I would, if possible, give me your opinion on an issue: I want to model one quarter of vehicle. The tire manufacturer provides Kz (for different pressures and camber angles), but does so for a given speed (125 Kph). I have understood that Kz varies linearly with...
  7. RoterHelm

    Starting point (FF 1600 Duratec)

    I'm not asking anyone explain to me any theoretical concept. That's not my problem. There are certain values that I need to know and not supplied by manufacturers. If you do not want or can not help do not understand why you write. Without acrimony. Regards, delacf "Any car which holds...
  8. RoterHelm

    Starting point (FF 1600 Duratec)

    Ok. Thank you very much, evelrod [thumbsup2]. I searched for a long time. You can find front track, rear track, wheelbase, total weight, ect. That's easy. I want something more specific such as unsprung weight, toe, ride rate etc. This is more complicated. I do not think this should be the...
  9. RoterHelm

    F1 front geometry, why so high RC?

    Honestly, I do not see a high roll center. The arms are nearly parallel. "Almost". Be cut at a point too far but I think this will be it more or less at ground level. The shorter the distance between the center of gravity and roll cente the lower the torque.But the center of gravity should...
  10. RoterHelm

    Starting point (FF 1600 Duratec)

    Hello, I'm starting with the design of the suspension of a Formula Ford on radial Dunlop tires (2010). I am a mechanical engineer but I'm starting to study vehicle dynamics. I am a rookie[bigcheeks]. I wondered if you knew the value of some characteristic parameters, common for a Formula Ford...

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