BallReviews

General Category => Drilling & Layouts => Topic started by: uphambat on November 13, 2005, 01:33:30 PM

Title: What kind of drilling is this? (pics)
Post by: uphambat on November 13, 2005, 01:33:30 PM

Well.. i do not have much knowledge in ball drillings, but i would like to know what these drillings are named. I've seen terms like stacked leverage but have no clue at all as to what it describes. So.. i would like you to help me identify the drillings on these balls and i can provide extra pictures if needed. So here are the pin placements of two ball drillings

Danger Zone 5
http://www.picapic.net/media/VKBWS4R84Q8GV4

Alter Ego
http://www.picapic.net/media/V47NCK3

Thanks

Updated with extra pics

Alter Ego
http://www.picapic.net/media/9DY7XR4

Danger 5
http://www.picapic.net/media/ZB45HH5

Okay.. I'm not particularly sure what i have to look out for..PAP? MB? i dont exactly understand. So i took photos of other markings on the ball which may be of help..

Edited on 11/13/2005 11:05 PM

Title: Re: What kind of drilling is this? (pics)
Post by: J_Mac on November 13, 2005, 09:38:06 PM

Need more information.  For the most part PAP and locations of the MB, marked or apparent, and location and description of balance holes.
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If God had intended us to drink beer, He would have given us stomachs. - David Daye

Title: Re: What kind of drilling is this? (pics)
Post by: uphambat on November 13, 2005, 10:19:25 PM

How is this PAP determined..?

Title: Re: What kind of drilling is this? (pics)
Post by: charlest on November 14, 2005, 06:03:17 AM

uphambat,

You might want to read this document:
http://www.columbia300.com/innovation/techdocs.cfm?id=6

Ebonite's website has a glossary of technical terms:
http://www.ebonite.com/techcenter/techterms.php
and technical tips:
http://www.ebonite.com/techcenter/techtips.php

Many other manufacturers have similar technical documents on their websites, with good basic descriptions of the type of things you need to know about drillings.

This website is also VERY good:
http://www.bowlingcoach.com/
Click on the Sept 2002 issue of Pro Shop Notes for some of this technical info. The explanations are detailed and fully explained.
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Bowling: Wish I could help me as much as I seem to help others ...
Life ... is what you make of it. No, really!

Title: Re: What kind of drilling is this? (pics)
Post by: JamesCube on November 16, 2005, 06:44:47 PM

See, drillings are determined by the distance from the PAP to the Pin and CG.  Since you're right handed, your PAP is the spot on the right side of the ball that is equidistant from your ball track.  It is the spot that you rotate the ball around when you throw it.

As the pin gets closer to that spot, it will want to roll earlier since the core will be in an increasingly stable position.  As it gets further away, the ball will want to lope down the lane since the core is wobbling and not rolling.

That's a very basic way to describe the relationship between PAP and Pin distance.