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Author Topic: Question about Storms Shift being a "y spinning ball"  (Read 1901 times)

LiquidHero

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Question about Storms Shift being a "y spinning ball"
« on: February 25, 2007, 11:18:52 AM »
Heres the link to the drill sheet http://stormbowling.com/pdf/drill_specs/key_drilling.pdf
In the drilling instructions it says that the Shift is a "y spinning ball". What exactly does that mean? I have attended a few seminars and recall them saying the the x spinning balls are the most common because it gives the bowler the most predictable and desirable reaction. Also do you know of any other balls that were y spinning? I think the EMB was one.  Thanks

 

LiquidHero

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Re: Question about Storms Shift being a "y spinning ball"
« Reply #1 on: February 27, 2007, 08:11:59 AM »
Thanks Merlin. Anyone else have any input please?

dizzyfugu

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Re: Question about Storms Shift being a "y spinning ball"
« Reply #2 on: February 27, 2007, 08:22:13 AM »
That is/was a good explanation in a nutshell. On "normal" balls/cores, only the X and Y axis matter, they define the RG max/min as well as the differential. If you want, you can describe them as an axis through the pin and an axis in a right angle to this, when you look from the side of a ball at it with the greatest difference (weight distribution will also have effect).
The "additional" Z axis is the 3rd dimension of a core which come into play with strong mass bias cores, the "Preferred Spin Axis" around which the rotating core wants to stabilize, relative to the ball's path.
Without this additional power, it is rather irrelevant (but still there!) and you can find it on any ball when you draw a 6.25" line from the pin through the CG.

If you want, the X/Y/Z stuff is just a different lingo for a core with a strong or significant mass bias influence. Sounds important, but physics work the same on every core.
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Edited on 2/27/2007 9:31 AM
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BackToBasics

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Re: Question about Storms Shift being a "y spinning ball"
« Reply #3 on: February 27, 2007, 09:11:28 AM »
There are 2 basic asymmetrical spinning designs.  Y spinners and Z spinners.  Y spinners actually spin on the mass bias whereby Z spinners are 90* from the MB and the pin.  So if you put a Y spinner in a Determinator, it will spin to the MB marking (assuming it's correctly marked).

I don't know of any Z spinning MB balls now.  I believe the Paradigms, Epics,  Ones, Track Machines/Rules, all Morich etc are Y spinners.  Some Z spinning balls were the Track Nighthawk/Havoc, and earlier Apexes.    

The main difference in reaction that I've seen, and a reason I believe most companies switched to Y spinners, is the reaction strength downlane.  Z spinners tended to rev up very quick and lay off in the backend.  Y spinners have noticeably increased backend potential.
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shelley

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Re: Question about Storms Shift being a "y spinning ball"
« Reply #4 on: February 27, 2007, 09:33:00 AM »
quote:
The main difference in reaction that I've seen, and a reason I believe most companies switched to Y spinners, is the reaction strength downlane.  Z spinners tended to rev up very quick and lay off in the backend.  Y spinners have noticeably increased backend potential.


Probably because the actual PSA for y-spinners lies more or less on the pin-CG line (that is, for non-blems) while for z-spinners, the PSA is far off that line.  I would say it's like the Hammer HART core in the No Mercy.  With a z-spinner, you'd have to put the true MB in or left of the track and that would (could) give a weird CG placement.  Putting the MB mark there would put the actual z-axis stacked or swung towards the VAL.  But most people probably didn't drill them that way, they drilled them like any other MB ball and stacked or swung the "wrong" axis.

With the No Mercy, Hammer probably just marks a different spot than the true MB/PSA to let you drill the thing "label".

SH

YeahHossNV

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Re: Question about Storms Shift being a "y spinning ball"
« Reply #5 on: February 27, 2007, 03:51:28 PM »
Yes the No Mercy is a Z - spinning core.

Heres a link to better explain it

http://www.jayhawkbowling.com/DeTerminator/DeTmanual.pdf
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J_Mac

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Re: Question about Storms Shift being a "y spinning ball"
« Reply #6 on: February 27, 2007, 04:05:49 PM »
Tropical Storms are Z spinning as well, but it's hard to label a ball that isn't considered to be asymmetrical Z spinning...  (I had put a few on a Determinator one night out of curiousity.)
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