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Author Topic: Stacking a GP2 (now with picture)  (Read 1800 times)

legend4life95

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Stacking a GP2 (now with picture)
« on: September 26, 2005, 01:44:54 PM »
I'm thinking of redrilling my GP2 and wondering what I could expect from it if I drill it 3 3/8 x 3 3/8? Also, I've been playing with my grease pencil and trying to lay it out for fun, but have a newbie question. I know the drilling(5x4 or 4x3 or whatever the choice is) is top # = pin to pap distance and bottom # = cg to pap distance, but in assymetric balls do you use the MB to pap for the bottom # or still use cg?
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Edited on 9/27/2005 4:46 PM
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Raven829

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Re: Stacking a GP2 (now with picture)
« Reply #1 on: September 26, 2005, 09:48:31 PM »
In an assymetric ball you would use the MB to PAP distance.
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legend4life95

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Re: Stacking a GP2 (now with picture)
« Reply #2 on: September 26, 2005, 09:50:36 PM »
So it does'nt matter where the cg ends up?

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Edited on 9/26/2005 9:43 PM
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thfonz98

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Re: Stacking a GP2 (now with picture)
« Reply #3 on: September 26, 2005, 09:51:26 PM »
quote:
So it doest'nt matter where the cg ends up?

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****Kids in the back seat cause accidents; accidents in the back seat cause kids.****


(with assymetrical) only matters with the weights, seegeenomaddah(had to)
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Edited on 9/26/2005 9:44 PM
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legend4life95

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Re: Stacking a GP2 (now with picture)
« Reply #4 on: September 26, 2005, 09:55:34 PM »
so if the cg ends up being about 3 inches right of grip center and my PAP is 4 over, would it be hard to make it legal?

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kreitz

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Re: Stacking a GP2 (now with picture)
« Reply #5 on: September 26, 2005, 10:57:28 PM »
Correct me if i'm wrong,but on an assymetric ball, for the most part don't you use pin placement to determine hook potential and then use mb to fine tune the hook shape at breakpoint
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tenpinspro

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Re: Stacking a GP2 (now with picture)
« Reply #6 on: September 27, 2005, 02:50:55 AM »
Hey legend,

On strong asymmetrical balls where mass bias strength is >.008, the pin and mb are used for layout purposes.  A little hard to say what your ball is going to do without knowing where the mb is located from your pap.  

Making your ball legal depends on how much static weight is left, the amount of pos side weight created by a 3 inch pin to the right is dictated by the amount of top weight the ball had.
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quote:
on an asymmetric ball, for the most part don't you use pin placement to determine hook potential and then use mb to fine tune the hook shape at breakpoint  


Yes Kreitz, you're correct to a point but the stronger the mass bias, the more influence it will have.  My definition is that it "controls" reaction shape so it does more these days then just fine tune.  It has quite a bit of influence.  I've drilled the same ball with mb from 2.5 inches to pap and 7 inches to pap and the difference was about 8-10 boards of overall hook, not just at the breakpoint but throughout the lane in overall reaction.  Hope this helps clarify some....
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legend4life95

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Re: Stacking a GP2 (now with picture)
« Reply #7 on: September 27, 2005, 04:52:31 PM »
OK, here is a pic of what the layout would look like. The span is 4 1/2 on both fingers. The CG is 2 1/2 inches right of grip center. The X is my PAP(4"). The MB is 3 3/8 below the PAP and the pin is 3 3/8 from PAP and will be drilled thru ring finger. Now what could I expect from this ball. I am looking for a strong move in heavy oil. Here is the pic:

http://putfile.com/pic.php?pic=9/26916383373.jpg&s=x4


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legend4life95

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Re: Stacking a GP2 (now with picture)
« Reply #8 on: September 27, 2005, 05:31:46 PM »
On the mesurement from MB to PAP, I measured from the center of the MB stamp to the pap. Was that correct or should it be from the egde of the stamp?
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spanky

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Re: Stacking a GP2 (now with picture)
« Reply #9 on: September 27, 2005, 07:39:55 PM »
You've got to remember, there's more to a lay out than just distance from PAP; you've got to consider the angle. You mentioned stacked, which would mean that the pin and MB are a straight line parallel to your VAL. That is not what the picture illustrates. If you sketch your midline on the ball, you should see a mirror image of the line from pin - PAP and the line from PAP - MB.
 Hope this helped a little. That is why you will often see a layout represented by 5" x 4" with pin 2.5" above midline. Without the last part, that 5" x 4" could be pin over or pin under while still being 5". Take a compass (that draws circles) and set it to 5" and place the point on your PAP. Now draw a semicircle on the ball to the left (RH). Anywhere on that line is 5" from PAP.
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legend4life95

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Re: Stacking a GP2 (now with picture)
« Reply #10 on: September 27, 2005, 09:39:28 PM »
OK, I was under the impression that a 3 3/8 X 3 3/8 was the same as stacked leverage. So thats not right? Refering back to the layout in the pic, the pin will be 2 3/8 above midline.

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mrh57

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Re: Stacking a GP2 (now with picture)
« Reply #11 on: September 27, 2005, 10:01:47 PM »
If you want it stack put the mb 5 3/4 from PAP.
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legend4life95

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Re: Stacking a GP2 (now with picture)
« Reply #12 on: September 27, 2005, 10:07:48 PM »
quote:
If you want it stack put the mb 5 3/4 from PAP.


huh? That does'nt make any sense to me. I am a newbie at this layout stuff, but that just baffled me!
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