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NV B.55 - Bob Jewett's two-times-fuller system

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Uploaded by on Sep 2, 2008

http://billiards.colostate.edu

Bob Jewett's two-times-fuller frozen-cue-ball aiming system for predicting cue ball direction.

Much more info can be found at:
http://billiards.colostate.edu

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Sports

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Uploader Comments (DrDaveBilliards)

  • In the third example (at time 3:00), he invents another rule. But in fact, if you visualize his second method you can see that it would also work on this shot.

    Nice, useful info. Thanks!

  • @GetMeThere1

    Agreed ... you're welcome ... and thanks.

  • I enjoyed this video. It was a very complete and well thought out approach to a special case situation. Making note of the last two parts especially helped create a general approach to an already uncommon situation.

    Finally, does hitting through an OB frozen to a CB impart any spin on the cue ball (especially closer to a half ball hit)? And if not, then couldn't this system be used for banks, or getting safe?

  • Thank you for the kind remarks.

    This system can definitely be used to help with kick shots and safeties.

    Regards,

    Dave

  • so that wouldn't be a double hit?

  • @califoolio

    No; although, some leagues don't allow this type of shot.

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All Comments (10)

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  • I don't know of any simple explanation because multiple-object impact situations are very difficult to analyze and predict. The systems are "empirical" ... not theoretical.

  • Really cool !! I wonder if there's a relatively easy to understand physical explanation of why these rules seem to work. I also wonder if the effect varies with the force of the shot.

  • Excellent post. If people want to see this, I have some high-speed-video clips on my website (see the link in the video description) clearly showing the non-prolonged hit with a frozen CB (e.g., see HSV A.97).

  • The interesting thing is that there's only going to be one instantaneous contact between the tip of the cue and the cue ball. BCA nine-ball rules draw a distinction between this kind of hit and a push-through, which involves a prolonged contact and an accelerating stroke that "herds" the cue ball along the line of the stroke. Try it out on the table and you'll see the difference!

  • When the cue ball is frozen to the object ball, you are allowed to hit into the cue ball toward the frozen ball with a normal stroke. There is no double hit.

    Dr. Dave

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