Posted by: Frank Jessup () on Thu Aug 2 14:11:50 2001

>>> What is a representive time it takes to make a swing. I know it can vary, but I am looking for some kind of ball-park idea. I need it for a coaching thing I am doing. <<<
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> Hi Frank
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> The representative time it takes to make a swing depends on what portion of the swing you are timing. The full swing from stride to the finish of the follow-through may take over a half-second. The most useful information is gained when timing the swing from initiation to contact. I define initiation as when the hands are starting to accelerate forward (or laterally).
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> Most of my measurements were made with the use of video frames. Video cameras normally run at 30 frames per second. Therefore, each video frame would be 1/30 of a second. Professional hitters require 4 to 6 frames to bring the bat-head to contact depending mainly on their mechanics. Good rotational hitters average around 4 to 4 1/2 frames and the more linear hitters around 5 to 5 1/2 frames.
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> Jack Mankin
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Jack,

I might know those mechanics, Linear and Rotational, but not those terms. Would you tell me what the difference is. But please say it so that I can understand it. Remember, I am just a guy trying to teach some kids to play the game. If I can pick up some new information thats great.

FJ