BallReviews
General Category => Drilling & Layouts => Topic started by: Southern California Bowl on September 10, 2009, 08:13:43 AM
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What does drilling your thumb into the MB on a ball give you? I was thinking of placing my thumb in the MB and having the PIN 5 to 5.5 inches from my PAP, looking for a hockey stick reaction.
TY
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From what I recall, Mo Pinel say that drilling into the MB increases the mass bias strength of the core. So the ball reaction should be slightly stronger.
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"None are so blind as those who will not see."
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Is this on a symmetric or asymmetric ball? There are a couple of factors at play here. One is the reaction of the MB in this position or rather distance from PAP and the other is drill depth of the thumb hole itself. One would have to drill the thumb hole deep enough to alter the core in some way - which would affect the differential - otherwise you would not get much in the way of increased dynamics as seen in data using a gradient weight hole. If the ball has a strong MB, it's hard to know who to believe. Ebonite claims that balls with a strong MB and the MB being greater than 5-1/2" from PAP, then flare is reduced significantly.
Anyway, with the right ball, I think it would be a good experiment to try thumb on MB and RF on Pin to MB line. It would probably work best with a 4-5" pin so you can drill the thumb hole deeper.
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Warmon - when all you have is a hammer, everything looks like a nail
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It makes it stronger. Thats why the double thumb layout is popular. It creates a void very near the psa increasing its effectivness
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