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Author Topic: low differential  (Read 787 times)

xwenhan

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low differential
« on: May 15, 2006, 07:38:29 PM »
Hi all, just wondering what differential causes(in terms of ball hook shape , or earlier roll?)cause there are quite a few lane #1 balls that hav rather low differentials(eg, H20, tsunami ,Bullet). Anyone care  to shed some light as i want to go buy a H20... Thanks
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dizzyfugu

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Re: low differential
« Reply #1 on: May 16, 2006, 04:25:06 AM »
Rg differential causes flare. The higher the RG differential in a core (difference between RG min und RG max, core dimensions), the bigger the flare POTENTIAL of a ball. The drilling and the pin position steer the actual strength and initial point of flare - leverage being the strongest position.

High flare indicates that a ball can have a (relatively) huge amount of fresh surface in contact with the lane as it goes down the lane, making it suited for oily conditions and long patterns, and it will generally turn more when drilled to flare a lot and early. Low RG dif. Balls are well suited for dry lanes, even when drilled strong, since they do not over-react so easily as strong core stuff.

Hope this helps.
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Edited on 5/16/2006 4:23 AM
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DizzyFugu ~ Reporting from Germany

xwenhan

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Re: low differential
« Reply #2 on: May 16, 2006, 07:56:00 AM »
thanks fugu...that was educational, i never knew that fact.But then i would like to ask why some med-light oil balls, say the Zone classic are like 0.48 differential, and the H20, also medium-light, is like 0.3(dun know the actual nos.) differential. Anyone got an answer? and does it have anything to do with the ball rolling earlier? cos someone told me that lower differential balls roll earlier...anyone ?
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shelley

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Re: low differential
« Reply #3 on: May 16, 2006, 08:14:40 AM »
Lower RG balls roll earlier.  The Zone core is a very low-RG core, like the Inferno core.  I don't think the ZC is a med-light oil ball, more of a right-in-the-middle-of-medium oil ball.  The red-pin ZC is a light-oil ball.

SH
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dizzyfugu

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Re: low differential
« Reply #4 on: May 16, 2006, 08:22:13 AM »
Yes, the ZCGP is rather a ball for medium to medium-oily conditions. The ZCRP is a dry lanes ball... but it was never actually designed to be one. It is a batch of balls that went sour in production, with a weak coverstock. But sometimes the coverstock calls for a strong core to make the ball move the right way.

One very good, specifically designed ball for dry lanes had been the Purple Pearl Fuze - it had only a 0.0023" differential, specifically designed for high-rev players on dry lanes to be drilled strong. The low differential helped to keep the ball on the lanes at all... But such balls are rare. The RG differential gives just the potential for hook - you do not need to exploit it to the max by the drilling, wouldn't make sense to me, BTW.

The H20 might be similar in design to the PPF: low differential, so that high rev players still can drill the ball strong and maintain their "normal" game even on medium-dry to dry lanes.
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DizzyFugu - Reporting from Germany
Team "X" website (now available in English!): http://homepage.mac.com/timlinked/
"All that we see or seem, is but a dream within a dream..." - Edgar Allen Poe


Edited on 5/16/2006 8:45 AM
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DizzyFugu ~ Reporting from Germany

xwenhan

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Re: low differential
« Reply #5 on: May 16, 2006, 08:30:43 AM »
Thanks dizzy fugu and shelly for you comments...
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janderson

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Re: low differential
« Reply #6 on: May 16, 2006, 03:57:07 PM »
quote:
High flare indicates that a ball can have a (relatively) huge amount of fresh surface in contact with the lane as it goes down the lane, making it suited for oily conditions and long patterns, and it will generally turn more when drilled to flare a lot and early. Low RG dif. Balls are well suited for dry lanes, even when drilled strong, since they do not over-react so easily as strong core stuff.


Careful.  It is better to understand what flare does and how it works.

Flare helps increase hook in oil, it doesn't help hook as much on dry.  When a ball flares, it presents a new, clean part of the ball on which to turn.  Simply put, flare makes one part of the ball contact the lane on one revolution and a different part of the ball contact the lane on the next revolution and so on.  In oil, this helps the ball hook because it prevents the ball from rolling through oil, collecting oil on the ball, and continuing to roll over the same oil on the ball which decreases hook.  If there is no oil, or very little oil, it is still a clean swath of ball surface in contact with the lane whether the ball flares a ton or doesn't flare at all.


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