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Author Topic: NO mass bias mark for DIMENSION???  (Read 1343 times)

wkf0908

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NO mass bias mark for DIMENSION???
« on: July 14, 2008, 12:32:48 AM »
WHY? So how to use the Master drilling Sheet???
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Dan Belcher

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Re: NO mass bias mark for DIMENSION???
« Reply #1 on: July 14, 2008, 08:38:28 AM »
It has a symmetrical core -- symmetrical cores do not have a marked mass bias.  If you really need a drill sheet, use the Advanced drill sheet.  http://www.stormbowling.com/pdf/drill_specs/advanced.pdf  However, a competent ball driller familiar with your game should be able to come up with even more layout ideas than just these.  And you CAN find the theoretical mass bias on a symmetrical core by measuring down 6 3/4" from the pin through the CG.  However, it's such a miniscule asymmetrical bias that you will not get much effect from positioning it like the MB on a highly assymetrical core.
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shelley

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Re: NO mass bias mark for DIMENSION???
« Reply #2 on: July 14, 2008, 11:18:11 AM »
quote:
And you CAN find the theoretical mass bias on a symmetrical core by measuring down 6 3/4" from the pin through the CG.  However, it's such a miniscule asymmetrical bias that you will not get much effect from positioning it like the MB on a highly assymetrical core.


Doing it this way lets you lay the ball out like an asymmetric one and then you really only have to learn one layout system and reaction system.  Might simplify your day if you assume everything is asymmetric and lay balls out like that.  You just won't get as much of an effect, as you said, by moving the "MB" around that you would with a strong asym ball.

It doesn't work the other way around, assuming everything is symmetric and only working with the pin and CG.

SH

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ctwings10

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Re: NO mass bias mark for DIMENSION???
« Reply #3 on: July 14, 2008, 05:47:31 PM »
I think the issue he's talking about is that online Storm links the Master Line drilling sheet - which is for assym drills and mentions MB.

In the actual box they send the symmetrical instructions.  Lack of consistency leads to questions.
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