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General Category => Drilling & Layouts => Topic started by: duvallite on December 17, 2010, 08:19:20 AM

Title: Pin-CG-MB Alignment - How important?
Post by: duvallite on December 17, 2010, 08:19:20 AM
On an asymetrical core ball, how important is it that the pin-cg-mb are in a straight line?  In the photo link I've included, the MB is off to the right a bit.  Would this present any problems for a right-handed layout/drilling?  I'm thinking about buying this ball, so would it be "no problem", or should I pass and get one that has the pin-cg-mb in a straight line?  


http://i211.photobucket.com/albums/bb42/duvallite/Misc%20%20Photos/505T.jpg
Title: Re: Pin-CG-MB Alignment - How important?
Post by: Russell on December 17, 2010, 04:31:51 PM
For a skilled ball driller that's not a problem unless the top weight is outrageously high or they are WAY out of line (like 4").  Then it just limits some of the things you can do with an extra hole.

In all honesty for a righty the perfect CG for me is just barely left of the straight line...just like that one.
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Title: Re: Pin-CG-MB Alignment - How important?
Post by: bluerrpilot on December 17, 2010, 07:57:04 PM
not important at all
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Title: Re: Pin-CG-MB Alignment - How important?
Post by: Cobalt Bomb on December 17, 2010, 08:36:30 PM
Usually that direction of alignment is good for a right hand drilling, but like the other responses said its off very little so it should not limit you.
Title: Re: Pin-CG-MB Alignment - How important?
Post by: MC on December 17, 2010, 08:39:52 PM
quote:
In all honesty for a righty the perfect CG for me is just barely left of the straight line...just like that one.
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Edited on 12/17/2010 10:40 PM
Title: Re: Pin-CG-MB Alignment - How important?
Post by: duvallite on December 18, 2010, 04:29:24 PM
Thanks, appreciate the help.
Title: Re: Pin-CG-MB Alignment - How important?
Post by: kidlost2000 on December 18, 2010, 04:51:24 PM
Ball is perfect.

When ever the alignment is off by say 2+ inches then your only concern is the top weight and the weight hole needed to correct it.

Take the same picture of the Track ball and move the cg 2" further left. It will still be good for a right handed bowler because you could keep the cg near the grip line and not have any concerns about the static weight. For a left hander it would be limited a little because for many drillings the cg may end up several inches from the grip line and may require a very large weight hole to get it legal.(if possible)

Usually for either right handed or left handed bowlers if it is within 0-2" of being in line you have no worries.
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Title: Re: Pin-CG-MB Alignment - How important?
Post by: dizzyfugu on December 21, 2010, 12:51:16 AM
quote:

When ever the alignment is off by say 2+ inches then your only concern is the top weight and the weight hole needed to correct it.


While the deviation is technically not so dramatic, I'd be careful with CGs marked more than 1" off of the Pin-CG-line. Better have the CG marking confirmed on a do-do scale - I have seen such balls turning out as reaction duds. A big deviation generally hints at a weird core placement inside of the ball, so you never know...
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