BallReviews
General Category => Drilling & Layouts => Topic started by: lefty50 on May 12, 2015, 07:44:48 PM
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What is the effect (if any) on a double thumb layout when the MB position actually ends up in the thumb hole and is drilled out?
Thanks in advance
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According to a drill sheet regarding PSA by Storm, drilling into the MB enhances the dynamics of the weight block. What type of enhancements they mean is another question.
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According to a drill sheet regarding PSA by Storm, drilling into the MB enhances the dynamics of the weight block. What type of enhancements they mean is another question.
I believe they mean it increase both the overall differential and the intermediate differential.
Both putting the MB in the thumb hole and the Double Thumb weight hole do that, as far as I know/remember.
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Some info from bowlingchat:
The reason the double thumb layout is so strong, is that by drilling the thumb and XH so close to the MB, you make that intermediate diff huge (comparatively). This is where the primary strength of the Double Thumb layout comes in. Thus, the diff ratio is at its maximum giving the reaction it does.
To maintain the diffs., the farthest away from the thumb hole that you can place the PSA is the center of the balance hole. To delay the breakpoint and still maintain the diffs., the center of the thumb hole is the farthest you can place the PSA in that direction.
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Thanks to all for the feedback. I also found the following ballreviews discussion. It cam up on Google search though, not the on-site search...
http://www.ballreviews.com/drilling-layouts/drilling-through-the-mass-bias-marker-t283520.0.html
Interesting topic, I learned something.... Thanks to all who responded and to Rick/Ric for their initial discussion a few years ago.