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#176090 - 02/11/13 10:00 AM terminology
TominNJ Offline
Virtual League Champion

Registered: 03/31/11
Posts: 189
A/S/L: 59 M EHT NJ
I've been studying the dual angle layout method. I've measured the balls I already have for the angles and pin to pap distances. Now I'm ready to watch exactly how the different parameters affect ball reaction. Just to make sure I understand what I'm looking for, I could use some clarification or confirmation on the following:

the 3 phases are skid, hook and roll with some transitions between them.

a more acute drilling angle causes the ball to roll sooner. does this mean that the transition from hook to roll happens more quickly but the hook amount is the same or does the ball not hook as much?

a shorter pin to pap distance increases flare. am I correct in assuming that this means more total hook?

a more acute angle to the VAL causes the ball to rev quicker and transition sooner. This is sort of a big flywheel vs small flywheel effect and the ball transitions from skid to hook sooner? or from hook to roll sooner?
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Legend

Registered: Fri Aug 27 2004
Posts: 10100
A/S/L: Mountain View, CA
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#176103 - 02/11/13 11:45 AM Re: terminology [Re: TominNJ]
B-Hammer Offline
Legend

Registered: 04/19/09
Posts: 1802
A/S/L: 30/M/Bellingham WA
http://tamerbowling.com/index.php/how-critical-is-drilling-anyway/

Drilling Angle: The smaller this angle, the earlier the ball will want to get into a roll. The larger the angle, the later the ball will get into a roll.

If you throw slow, you want the ball to delay getting in a roll otherwise you will lose all kinds of energy. If you throw slow and you throw a ball drilled with a small drilling angle, donít be surprised if the ball is over/under. Conversely, if you throw fast and have a very large angle, donít be surprised when the ball seems like a [censored].

Val Angle: The lower the Angle to VAL, the quicker it will rev up and transition faster at the breakpoint. Youíre lowering the RG and increasing the differential. The higher the Angle to VAL, the slower it will rev up and slower, smoother transition at the breakpoint.

Basically this controls how snappy the ball is, but like drilling angle you can over do it in which case you'll have roll out.

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#176118 - 02/11/13 05:30 PM Re: terminology [Re: TominNJ]
NaSTI Offline
Action Bowler

Registered: 05/20/12
Posts: 214
A/S/L: 33/M/Renton WA
Great explanation B-Hammer! Now to figure out how I want my next dry lane ball to be laid out.
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My arsenal - Brunswick Mastermind, Storm Natural Pearl, Storm Reign of Power, Track MX10 and Track 505C2 High game - 300 High Series - 814
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#176127 - 02/11/13 10:08 PM Re: terminology [Re: TominNJ]
Fin09 Online   content
Hall of Famer Contender

Registered: 01/07/08
Posts: 980
A/S/L: 47/M/Virginia Beach, VA
As far as pin to pap distances and how they relate to maximum flare, a 3 3/8" pin position will give you maximum flare on both a symmetrical and asymmetrical ball. Moving away from that position, whether closer to the pap or further away, will decrease the amount of Track flare you can expect. Track flare will decrease more on a symmetrical ball as you move away from that 3 3/8" leverage position than it will on an asymmetrical ball, so take that into account when choosing a layout.
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