Difference between revisions of "User:Mathistruth/Sandbox"

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At times it is suggested to drill finger holes deeper to maintain static weight limitations when using certain balance holes.  A study was conducted to determine the effects on mass properties when drilling finger holes 2" deep compared to 3.5" deep.  I used CAD software to model a double thumb drilling and study the effects of drilling finger holes deeper.  The ball used in the study was a MoRich Frenzy at 15 pounds.  The dual angle layout used is 65x4"x30 based on a PAP measurement of 5" over by 3/8" up.
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There are times when it is suggested to drill finger holes deeper to maintain static weight limitations when using certain balance holes.  A study was proposed to determine the effects on mass properties when drilling finger holes 2" deep compared to 3.5" deep.  Using CAD software, I modeled the double thumb layout of 65x4"x30, based on a PAP measurement of 5" over by 3/8", on a MoRich Frenzy at 15 pounds.  The following table shows the mass properties for the un-drilled Frenzy, drilled with no balance hole and drilled with a 1.25" x 3" deep balance hole in the double thumb position. Notice the total differential of the ball does decrease slightly when drilling the fingers deeper but maintains the intermediate differential so the diff ratio actually increases slightly.  
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[[File:Frenzy_65x4x30_DT_Finger_Depth_Study.jpg‎]]
 
[[File:Frenzy_65x4x30_DT_Finger_Depth_Study.jpg‎]]

Revision as of 21:24, 29 October 2010

There are times when it is suggested to drill finger holes deeper to maintain static weight limitations when using certain balance holes. A study was proposed to determine the effects on mass properties when drilling finger holes 2" deep compared to 3.5" deep. Using CAD software, I modeled the double thumb layout of 65x4"x30, based on a PAP measurement of 5" over by 3/8", on a MoRich Frenzy at 15 pounds. The following table shows the mass properties for the un-drilled Frenzy, drilled with no balance hole and drilled with a 1.25" x 3" deep balance hole in the double thumb position. Notice the total differential of the ball does decrease slightly when drilling the fingers deeper but maintains the intermediate differential so the diff ratio actually increases slightly.



Frenzy 65x4x30 DT Finger Depth Study.jpg