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Author Topic: another thought provoking question....  (Read 2516 times)

FBM357

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another thought provoking question....
« on: February 16, 2005, 06:23:51 AM »
Okay, balls are known to retain energy in one form or another.  My question is, can a ball EVER lose energy over a period of time?  Notwithstanding the cover.  For example, fishing line is constantly stretched, however over a period of time memory retention is loss, thus creating a weak line.  Same happen to bowling balls?
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TheBowlingKid25

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Re: another thought provoking question....
« Reply #1 on: February 16, 2005, 02:27:52 PM »
No, there is a difference. A bowling ball is never pulled on, and doesnt have as much stress put on it as a fishing line. (besides hitting pins) Thats like setting 3 coines in a row. If you hold the middle coin, and smack it with another one, the engery goes through the middle coin, and launches the other one away. Now take that coin in the middle and throw it against a wall 1000 times, it will still retain the energy when you hit it with another coin. (if anyone understood that lol)
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Edited on 2/16/2005 3:24 PM
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Ragnar

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Re: another thought provoking question....
« Reply #2 on: February 16, 2005, 02:29:38 PM »
I would think that the answer would by "yes."  Balls have plasticers in the cover stock.  Gradually it would seem, these would bleed our or harden thereby causing the coefficient of restitution to go down, thereby losing "hit."  If you ignore the cover and look only at the core I don't think you'll see much change,[icouldn't help myself mode] though the Detonator Pro, with the U-235 Power Core might lose hit as its half life goes down.[/mode off]
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Phillip Marlowe

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Re: another thought provoking question....
« Reply #3 on: February 16, 2005, 02:30:35 PM »
It depends on the height you drop it from...
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TheBowlingKid25

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Re: another thought provoking question....
« Reply #4 on: February 16, 2005, 02:31:02 PM »
Well slap me in the back of the head and call me sue! The way I was looking at it, was not including the cover. Just the core itself, which is what retains the energy isnt it?
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....BRUNSWICK!
¡Viva la nación de Brunswick!
Nothing more to be said.
....DEATH BY CHEETOS!!!!
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a_ak57

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Re: another thought provoking question....
« Reply #5 on: February 16, 2005, 02:32:38 PM »
quote:
I would think that the answer would by "yes."  Balls have plasticers in the cover stock.  Gradually it would seem, these would bleed our or harden thereby causing the coefficient of restitution to go down, thereby losing "hit."  If you ignore the cover and look only at the core I don't think you'll see much change,[icouldn't help myself mode] though the Detonator Pro, with the U-235 Power Core might lose hit as its half life goes down.[/mode off]
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"A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal." Oscar Wilde
Ragnar sure likes to throw his purdy Uranium Buzzsaw.

Rags has pretty much gotten it, minus the lame chemistry joke.  Coverstock is the only thing that will affect its performance going down.
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Ragnar

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Re: another thought provoking question....
« Reply #6 on: February 16, 2005, 02:34:45 PM »
How dare you, sir, accuse me of making lame chemistry jokes.  It was in bad taste, not lame.  You can be sued over such trivialities.
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"A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal." Oscar Wilde
Ragnar sure likes to throw his purdy Uranium Buzzsaw.
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FBM357

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Re: another thought provoking question....
« Reply #7 on: February 16, 2005, 02:35:54 PM »
Hey Rags,  shouldn't the density of the core change over a period of time?
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guzmand19

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Re: another thought provoking question....
« Reply #8 on: February 16, 2005, 02:35:56 PM »
I think as with anything, things do die with use/age.  With a bowling ball, during lots of use we know balls begin to track out, and eventually just never hit the same.  Throwing a ball over the same spot over and over again would have to cause some shell wear, which could affect the roll of the ball just enough that it never gets into the power roll that it used to when newer.

Considering that a new ball hits so hard because the shell is new, and not grabbing much lane, it only makes sense that as the shell wears down in spots from repeated use, that it would cause small changes in how the ball rolls.
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Ragnar

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Re: another thought provoking question....
« Reply #9 on: February 16, 2005, 02:39:39 PM »
Vernon (it is Vernon, isn't it?), I don't see how core density would change.  I don't think ball cores are like glass (where it actually will flow over long periods of time), so things like RG, differential, and density should remain the same.  I suppose it is possible that some cores could, over long periods of time, alter (maybe the ceramic cores?), but I'd imagine the time periods in question would be so long as to be trivial.
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"A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal." Oscar Wilde
Ragnar sure likes to throw his purdy Uranium Buzzsaw.
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Wyrd bið ful aræd!
(Thought to be a member of something called the PMS club by some.)

FBM357

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Re: another thought provoking question....
« Reply #10 on: February 16, 2005, 02:42:24 PM »
quote:
Vernon (it is Vernon, isn't it?), I don't see how core density would change.  I don't think ball cores are like glass (where it actually will flow over long periods of time), so things like RG, differential, and density should remain the same.  I suppose it is possible that some cores could, over long periods of time, alter (maybe the ceramic cores?), but I'd imagine the time periods in question would be so long as to be trivial.


Vernon it is.

I was thinking along the lines like rubber.  it hardens then becomes brittle over time.  The core is 'somewhat' exposed to the elements (i.e. heat, cold, air) thus would be affected, no?
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a_ak57

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Re: another thought provoking question....
« Reply #11 on: February 16, 2005, 02:44:07 PM »
Not really, since cores are made of materials that won't do that under typical climate conditions.
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Ragnar

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Re: another thought provoking question....
« Reply #12 on: February 16, 2005, 02:45:37 PM »
But I don't think core material is at all similar to rubber.  Most of it (as I understand) is pretty high density material; some ceramic, the rest (I suppose) a urethane variant (?).  Since normally it isn't directly exposed to air (though not, I'd guess, a perfect vacuum) I doubt it would change much.  Though over large amounts of time it might.  In any event, even if it did change, I suspect the change would be so trivial as to be unnoticed.
--------------------
"A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal." Oscar Wilde
Ragnar sure likes to throw his purdy Uranium Buzzsaw.
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Wyrd bið ful aræd!
(Thought to be a member of something called the PMS club by some.)

DukeHarding

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Re: another thought provoking question....
« Reply #13 on: February 16, 2005, 03:03:24 PM »
Balls will after a period of time "get out of round".
They will will lose their dynamic energy.
When they are "true", a bowling ball is more like a gyroscope...as they wear, they will become out of round (Think, sort of egg-shaped, but not to that extreme). Actually, you will then have more of a controled rolling ball.

At least that's what we thought back in the '60s.
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