Author Topic: Mapping a bowling ball (Read 4190 times)

wlee107 · « **on:** November 14, 2006, 08:13:19 AM »

Hello everyone! This is my first post into these forums

I am a beginner bowler with alot of desire to learn basic bowling ball geometry and ball layout.
I have alot of questions so i'll try to list them carefully

What is CG and how do you determine the cg on a bowling ball?
What is PAP and how do you determine your pap on a bowling ball?
Where is the pin on the bowling ball? Is it the yellowish dot? because i saw ball layouts where the thumb hole was next to the pin while my layout has the fingerholes next to the pin and i find it confusing.
Overall, what is the importance of CG, PAP, and pin?
Thank you for your time in reading this

Any corrections or guidance would be greatly appreciated.
-William

Laybzz74 · « **Reply #1 on:** November 14, 2006, 04:33:31 PM »

http://www.ballreviews.com/Forum/Replies.asp?TopicID=74110&ForumID=16&CategoryID=5
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wlee107 · « **Reply #2 on:** November 14, 2006, 04:36:09 PM »

Thank you very much Laybzz74. I was trying to look for some former threads but couldn't find any

. Anyways if anyone else wants to add anything, feel free to post.

Re-Evolution · « **Reply #3 on:** November 14, 2006, 04:40:14 PM »

What is CG and how do you determine the cg on a bowling ball?
This is marked by either a colored in punch mark or a symbol of some sort such as Ebonite's 3 circles. You can verify the CG location by placing it on a dodo scale with the CG marker facing the ceiling. The weight should stay constant as you rotate the ball around the cg marker. If it changes the CG is mis-marked.

What is PAP and how do you determine your pap on a bowling ball?
PAP stands for Positive Axis Point which is the point that the ball rotates around on it's first few revolutions after release. This can be found in many ways. See the FAQ that is in my signature.

Where is the pin on the bowling ball? Is it the yellowish dot? because i saw ball layouts where the thumb hole was next to the pin while my layout has the finger holes next to the pin and i find it confusing.
Yes that is the pin however it can be many different colors. The reason that you pin is next to your fingers is you are what is called a semi roller. People that have the pin near their thumb are full rollers and the pin is placed in this area to cause the ball to flare in the opposite direction. This is helpful to them cause they track between the fingers and thumb. With a standard pin position when the ball starts to flare the track will move toward and possibly over the thumb.

Overall, what is the importance of CG, PAP, and pin?
The CG has very little to no importance other than the fact that it's placement determines whether you have to have a balance hole or not and sometimes where that balance hole has to be placed to get the ball's static weight legal.
PAP is used for laying out the drill pattern and can give some insight as to how the bowler rolls the ball.
Pin determines flare potential and hook characteristics for given ball.
The most important factor when it comes to a ball is the cover composition and surface grit.
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*****Re-Evolution*****
Evolve to a smarter game.

www.Bowling-Info.com
BR.com's unofficial FAQ section

Author Topic: Mapping a bowling ball (Read 4190 times)

wlee107

Mapping a bowling ball

Laybzz74

Re: Mapping a bowling ball

wlee107

Re: Mapping a bowling ball

Re-Evolution

Re: Mapping a bowling ball