[Simple Tip] Controlling Topspin on Forehand

Discussion in 'Tennis Tips/Instruction' started by KayFactor, Aug 25, 2013.

  1. KayFactor

    KayFactor Rookie

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    #1
  2. Chas Tennis

    Chas Tennis Hall of Fame

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    The time estimate is way too long. ?

    That reference says
    ...........................
    "How long is the time from buttcap position to the spring forward? At most, half a second."................

    Here are some Nadal forehands. We can estimate the time it takes to go from the butt cap position to impact. 240 fps
    https://vimeo.com/63687035

    The best way to do stop action single frame on Vimeo is to press the play pause button as fast as possible.

    I count about 11 frames from the time that the butt cap is pointing at the ball until impact.
    t = 11 fr /240 fr/sec
    t = 0.045 second.

    He says < 0.5 second.

    I'd say that he is off by a factor of 10X. ?

    [1/2 second recorded at 240 fps takes 4 seconds when played back at 30 fps, as in the Nadal video. ]
     
    Last edited: Aug 26, 2013
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  3. KayFactor

    KayFactor Rookie

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    Sorry about that I knew it happens really fast but I did not know it was that fast. Shame on me for blindly putting numbers up. From what I see on reg speed videos it looks like half a second to me. Maybe the way I see a half a second is too fast. =\

    Thanks for showing me Chas
     
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