win a ball from Bowling.com

Author Topic: What does this drilling do?  (Read 2228 times)

Tony Banks

  • Full Member
  • ***
  • Posts: 244
What does this drilling do?
« on: January 23, 2006, 10:08:44 AM »
Xcel Pearl:3" Pin is 1/4" right of ring. Mass Bias is swung out 4 1/4" from thumb. X hole drilled 1 1/2 right of CG and slightly lower. Try to get back to me soon, I'm going bowling here in a few.
--------------------
Look for me in the upcoming PBA Tour! I'll be the guy in the back row with the foam finger singing "Take Me Out To The Ball Game" during the 7th inning.

 

Tony Banks

  • Full Member
  • ***
  • Posts: 244
Re: What does this drilling do?
« Reply #1 on: January 24, 2006, 10:20:57 AM »
hmmm No body knows!?
--------------------
Look for me in the upcoming PBA Tour! I'll be the guy in the back row with the foam finger singing "Take Me Out To The Ball Game" during the 7th inning.

JohnP

  • Hero Member
  • *****
  • Posts: 5819
Re: What does this drilling do?
« Reply #2 on: January 24, 2006, 10:31:53 AM »
Tony -- Good reason no one has answered.  You haven't posted a profile or given us your PAP location, revs, speed, lane conditions, etc.  No way to make any kind of an intelligent guess without this info.  --  JohnP

Tony Banks

  • Full Member
  • ***
  • Posts: 244
Re: What does this drilling do?
« Reply #3 on: January 24, 2006, 10:13:14 PM »
John, thanks for speaking up! I don't know my PAP. I'm a low to medium speed bowler with average revs. Lanes are med-dry synthetics. I always thought a ball was drilled for a certain reaction, and regardless of the bowler, you could tell what the ball was drilled to do.
--------------------
Look for me in the upcoming PBA Tour! I'll be the guy in the back row with the foam finger singing "Take Me Out To The Ball Game" during the 7th inning.

JohnP

  • Hero Member
  • *****
  • Posts: 5819
Re: What does this drilling do?
« Reply #4 on: January 25, 2006, 10:50:49 AM »
Tony -- Layouts for modern balls with dynamic cores are primarily based on the distance between the pin and the PAP (positive axis point, or the "axle" that the ball is rolling on when released).  That distance sets the core angle, which determines the amount of flare and when it occurs.  Take a 4" x 4" layout (strong) for a high tracker with, say a 5 1/2" horizontal and +1/2" vertical PAP location for example.  That ball, thrown by a low tracker, say 3 1/2" x +1" PAP location, would have roughly a 1 1/2" pin to PAP dimension, which would be relatively weak.  So without the PAP location all a driller is doing is guessing.  --  JohnP

Tony Banks

  • Full Member
  • ***
  • Posts: 244
Re: What does this drilling do?
« Reply #5 on: January 27, 2006, 11:47:21 AM »
JohnP, Thanks for that clarification. I still have a great deal to learn about drilling a bowling ball. How might I find my PAP? Thanks.
--------------------
Look for me in the upcoming PBA Tour! I'll be the guy in the back row with the foam finger singing "Take Me Out To The Ball Game" during the 7th inning.

JohnP

  • Hero Member
  • *****
  • Posts: 5819
Re: What does this drilling do?
« Reply #6 on: January 27, 2006, 09:38:56 PM »
Tony -- Locating your PAP is just one of MANY good topics covered in the "Unofficial FAQ" thread posted and maintained by Storm Track (Thanks again, ST).  Link follows.  --  JohnP

http://www.ballreviews.com/Forum/Replies.asp?TopicID=74110&ForumID=16&CategoryID=5

Tony Banks

  • Full Member
  • ***
  • Posts: 244
Re: What does this drilling do?
« Reply #7 on: January 27, 2006, 10:37:54 PM »
Thanks, that definately answered the question. I'll just have to find a lane with enough oil to leave some on the ball.
--------------------
Look for me in the upcoming PBA Tour! I'll be the guy in the back row with the foam finger singing "Take Me Out To The Ball Game" during the 7th inning.

JohnP

  • Hero Member
  • *****
  • Posts: 5819
Re: What does this drilling do?
« Reply #8 on: January 28, 2006, 09:40:23 AM »
Tony -- When you think you have it located, mark it with a piece (~1" square) of white tape and throw it.  Have someone watch it for you.  If the piece of tape appears stationary in the first 10 ' 15' of its travel, you've got it.  Or if you're using a non-flaring ball it should appear stationary all the way down the lane.  The dimensions are measured from the grip center, straight across on the mid line, then straight up (or down, which would be a negative dimension, indicating an inverted track) to the PAP on the vertical axis line (VAL).  This may all be in the FAQ, I just don't remember.  --  JohnP