CG for symmetrics and finger holes (to deep)

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driller
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CG for symmetrics and finger holes (to deep)

Post by driller »

Hello,
I have 2 questions to ask hereby that are connected to layouts.

1.Whats the reason that the finger holes are very often drilled into the core? Shouldn't it be better to not modify the core?
If they are not deep as that you can plugg and re drill with different layouts without any impact on the core.

2.As I have seen from Mo, the impact of CGs position have no impact at all for symmetric cored balls.
Does that mean that a ball with pin between the fingers (up or down) will behave the same for a lefty as a right hand player? (if player style parameters are equal) independent of side weight ex. +1 ounce for RHP or -1ounce for LHP? Means a left hand player can drill the grip at same position as the right handed after plug? if needed just change finger holes position for pin replacements if needed?

Both questions are connected to modify the core in balls as less as possible.
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MegaMav
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Re: CG for symmetrics and finger holes (to deep)

Post by MegaMav »

driller wrote: January 19th, 2022, 6:21 pm Hello,
I have 2 questions to ask hereby that are connected to layouts.

1.Whats the reason that the finger holes are very often drilled into the core? Shouldn't it be better to not modify the core?
If they are not deep as that you can plugg and re drill with different layouts without any impact on the core.

2.As I have seen from Mo, the impact of CGs position have no impact at all for symmetric cored balls.
Does that mean that a ball with pin between the fingers (up or down) will behave the same for a lefty as a right hand player? (if player style parameters are equal) independent of side weight ex. +1 ounce for RHP or -1ounce for LHP? Means a left hand player can drill the grip at same position as the right handed after plug? if needed just change finger holes position for pin replacements if needed?

Both questions are connected to modify the core in balls as less as possible.
1a. Driller preference at this point. It used to be to balance statics without a balance hole or a industry misnomer about significantly altering ball reaction.
1b. Not modifying the core is usually meant for certain core designers and their egos.

2a. No. Each player is different and how they release the ball along with their PAP is different, so the layout will be different in relation to that.
2b. No, again, each player is different.

Drilling into the core of the ball will either enhance to reduce core/ball dynamics, it depends how it's drilled.
driller
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Preferred Company: brunswick

Re: CG for symmetrics and finger holes (to deep)

Post by driller »

thanks for reply,
At answer 2a, its not take into account of my information. text:(if player style parameters are equal) read instead: theoritical mirrored player.
To simplify the question:have +1 ounce or -1 ounce any impact at all? such as earlier or delayed rolling?
or more simplyfied:
If the pin is symmetrical placed between the fingers, the negative OR positive side weight have no impact at all?
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Re: CG for symmetrics and finger holes (to deep)

Post by TomaHawk »

With symmetric bowling balls, the method for finding the bottom end of the core is vague at best. We'll draw a line from the pin, through the cg, and mark a point 6 3/4" from the pin. Measuring the static zero point of a bowling ball, before drilling, is of little consequence. We still won't know the orientation of the block, only an x-ray could reveal the exact location. Therefore, drilling a symmetric is not exact science.

If you're asking, would a 1" variance in the orientation of the block either to the positive side or negative side of the thumb make a difference? The answer would be yes. That's a 2" variance, but more importantly, 1" negative would place the bottom of the block closer to the track.
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