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Author Topic: drill layout question  (Read 2070 times)

chitown

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drill layout question
« on: March 07, 2006, 11:53:36 PM »
On a symmetrical core ball how much of a difference in reaction would there be if the ball was drilled like this.

Pin in the leverage position, cg kicked right to 1 oz and no blance hole.

The other option

Pin in the leverage position and the, cg brought back to legal 1oz with an x-hole.

I know the ball with the x-hole would be stronger but how much stronger and would the reaction shape be different?
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Greg T

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Re: drill layout question
« Reply #1 on: March 08, 2006, 09:04:36 AM »


   Depends on where you put the hole. Flare reducing? Flare increasing? Pitched towards or away from thumb? Pitched towards oe away from palm? Size? Depth?
         



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chitown

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Re: drill layout question
« Reply #2 on: March 08, 2006, 03:59:57 PM »
quote:


   Depends on where you put the hole. Flare reducing? Flare increasing? Pitched towards or away from thumb? Pitched towards oe away from palm? Size? Depth?
         



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I'm talking about a flare increasing hole below the PAP and pitched away.
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Greg T

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Re: drill layout question
« Reply #3 on: March 08, 2006, 05:18:25 PM »


   Depending upon the diameter and depth of the hole, the bal COULD be made quite a bit stronger IF it doesnt burn up. By using a smaller diameter, deeper hole, you can change the core dynamics and have a more profound effect on the reaction. If you use a large diameter, shallow hole, you'll see less of a change. If you really kick the cg out and have a ton of weight to remove, you can use a large diameter and deep hole to create the largest increase in reaction.


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Strider

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Re: drill layout question
« Reply #4 on: March 09, 2006, 01:50:38 PM »
From what I've read on here and from the bowling manufacturers, a weight hole will add/change a ball's reaction by 2-5%.  Probably not enough to see at full speed without using a video camera, but just enough to change how/when the ball flares and hooks.
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chitown

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Re: drill layout question
« Reply #5 on: March 09, 2006, 06:01:45 PM »
quote:
From what I've read on here and from the bowling manufacturers, a weight hole will add/change a ball's reaction by 2-5%.  Probably not enough to see at full speed without using a video camera, but just enough to change how/when the ball flares and hooks.
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Thanks bud that helps me make up my mind.  I think I will just drill the ball with pin leverage and the cg kicked to 1 oz and no balance hole.  This should be a nice complement to my other ball drilled pin aover bridge(pin 5.5" from pap).
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Strapper_Squared

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Re: drill layout question
« Reply #6 on: March 09, 2006, 06:13:47 PM »
quote:
I think I will just drill the ball with pin leverage and the cg kicked to 1 oz and no balance hole.  This should be a nice complement to my other ball drilled pin aover bridge(pin 5.5" from pap).


I've found that to be a good approach.. if the reaction isn't quite what you are looking for, then you can go ahead and pop a hole in it.
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chitown

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Re: drill layout question
« Reply #7 on: March 09, 2006, 06:29:53 PM »
quote:
quote:
I think I will just drill the ball with pin leverage and the cg kicked to 1 oz and no balance hole.  This should be a nice complement to my other ball drilled pin aover bridge(pin 5.5" from pap).


I've found that to be a good approach.. if the reaction isn't quite what you are looking for, then you can go ahead and pop a hole in it.
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Wow...Pick up Sam Adams and LaVaar... What a DEFENSE!Bengals News


That's right I never though of it that way.
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