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Author Topic: Spin Times  (Read 1996 times)

scotts33

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Spin Times
« on: October 21, 2008, 03:07:07 AM »
On asymmetrical balls which company's other than MoRich list spin times on their websites along with the other usual data?   And if not why don't they?  

I am guessing if they don't they don't spin every ball because of cost in production or ????  How does a manufacturer come up with an exact MB position if they don't spin?  I am asking these questions to understand the process.....don't jump on me.  
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CharlieBrown

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Re: Spin Times
« Reply #1 on: October 21, 2008, 11:34:12 AM »
I know Big B has got them in the drill sheets. Not sure about others though.
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charlest

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Re: Spin Times
« Reply #2 on: October 21, 2008, 01:14:06 PM »
quote:
I know Big B has got them in the drill sheets. Not sure about others though.
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I'm a THS hack and a ball junkie.


They have "spin" times or mass bias strength/intermediate differential measurments??
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charlest

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Re: Spin Times
« Reply #3 on: October 21, 2008, 01:19:27 PM »
Scott,

I think spin times are too easy to fudge or misinterpret, to be kind. The last 10 asymmetric Track balls, made by the old Track company all had spin times around 5 seconds. Yet MoRich balls all have/had significantly stronger Mass bias strengths, and significanty stronger breakpoints, that I have seen.

When Mo wrote the article in BTM around 2000 or hereabouts, he used balls at 2000 grit Abralon for consistency. Other than that, I don't know if everyone does the test the same way or even follows the directions. Thus, I'm not sure, I really wonder how significant the spin time really is. MB strength varies with drilling, pin location, and bowler's release and surface and oil amount, etc.  There are so many variables in this equation.
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scotts33

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Re: Spin Times
« Reply #4 on: October 21, 2008, 01:32:14 PM »
Understand your reasoning Jeff.  I am thinking most manufacturers probably would state spin times as TMI and confuse many.  I always figure more information better than not enough.
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CharlieBrown

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Re: Spin Times
« Reply #5 on: October 22, 2008, 05:00:58 AM »
quote:
quote:
I know Big B has got them in the drill sheets. Not sure about others though.
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I'm a THS hack and a ball junkie.


They have "spin" times or mass bias strength/intermediate differential measurments??
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"None are so blind as those who will not see."



In some balls, yes. E.g. ‘Spin time’ is listed in the Zone Classic drill sheet but not in the Ultra Zone drill sheet.


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charlest

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Re: Spin Times
« Reply #6 on: October 22, 2008, 08:00:58 AM »
quote:
Regarding Scotts33 question about how the manufacturer comes up with the exact high Rg axis/PSA (what many call Mb), don't assume that they actually do on each and every ball that leaves the factory.
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Precision


Rhetorically screaming, "How could they not measure every one"????

I wish this were more of a "precision" industry, with robot hands holding the cores, with the PSA/MB always at the 6 3/4" distance, etc. There are enough other variables thrown into the mix.
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LuckyLefty

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Re: Spin Times
« Reply #7 on: October 22, 2008, 08:33:25 AM »
Here are some questions.

Don't spin times directly refer to the MB strengh rating?  ie a higher MB strenth will have a faster spin time than a lower MB stength ball?  OR does a low rg high MB rating ball have a faster spin time than a high rg ball with an equally high MB rating??

AND what is the effect of these faster spin times??

My belief as translated to very layman type terms is that MB primarily refers to MIDLANE?  ie a strong MB ball seems to dramatically modify a balls position of the core effect.  

For example a strong MB ball with the MB under the thumb or in the track(if MB not too strong) seems to really create very little midlane action on the ball as the strong MB seems to make the core wait wait wait until the ball finally does it's final quick move to the hole.  I believe a drilling Mo used to call Super Symmetric(when under thumb).

Whereas a strong MB out on the VAL seems to have a VERY VERY heavy midlane move and usually not so much backend(unless major tweaks are done to pin position...ie from the dual angle principles).

Are these correct though layman descriptions?

REgards,

Luckylefty



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scotts33

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Re: Spin Times
« Reply #8 on: October 22, 2008, 11:47:37 AM »
Lil additonal info. as I asked Jason Wonders of Visionary about manufacturing of asyemmtical balls.  This is verbatim.

Hi Scott,

       The balls with a strong mass bias (Centaur AMB and Immortals) or a cap that needs to be marked for drilling purposes (G/B Centaur) we actually have a plastic pin drilled directly into the core prior to pouring the coverstock.  The pin is actually dead center into the mass bias/negative mass bias/or cap so that you know exactly where it is, without any guessing at all.  Where you see the clear locator pin is exactly where the MB or AMB is.
       As for the balls with a mild mass bias, it can just be assumed that it is 6 3/4" from the pin through the CG.  You can see with the AMB lines, we take great care in making sure that the cores are poured properly, and the CG should always be within about 1/2" of being dead in line with the pin and mass bias.  Being that the mild mass biases do not affect the balls performance or drilling nearly as much, a general idea of where it is located should be plenty to get the desired reaction.

       Jason

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