BallReviews
Equipment Boards => Radical => Topic started by: 12XSECH on July 03, 2014, 07:29:53 AM
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The finger scoop technology....unless i read wrong, if you drill pin under, then the finger holes dont hit the core that much? When I looked at the drill sheet there were few if any suggested drillings for pin under layouts. Is it pin up doesnt hit the core or pin down?
Thank you.
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From Mo Pinel:
As the developer of Radical's "finger scoop" and being listed on the US Patent application as the inventor, I guess it's appropriate for me to comment.
The finger scoop was developed to increase the versatility of drilled balls.
If one of these balls is drilled with the pin above the fingers, the fingers holes will only minimally penetrate the core, allowing the core to maintain it's undrilled core height. This produces a sharper, shorter breakpoint for the drilled ball.
If one of these balls is drilled with the pin below the fingers, the fingers holes will substantially penetrate the core, reducing the height of the core compared to the undrilled ball. That results in a ball with a smoother, longer breakpoint.
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Aloarjr810 has posted the correct answer, the difference in the pin above and the pin below is about .020 in differential. I say about because it may vary slightly from ball to ball, but the impact is substantial. Hitting the scoop and hitting the core makes a big difference.
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So a pin down drilling with this type of core has no advantage with this technology?
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Not true. It's advantage is it will cut down on the flare for less oil or shorter patterns