win a ball from Bowling.com
« previous next »
Pages: [1]

Author Topic: layout explanation  (Read 2999 times)

wulfpackbwlr

  • Sr. Member
  • ****
  • Posts: 493
layout explanation
« on: October 14, 2005, 07:47:12 AM »
I know this has been addressed before but i'm having 0 luck with the search option.  I've been bowling for about 10 years now and understand some BASICS about ball layouts and drilling.  I was wondering if you could just explain this:  

"Drilling: 5” pin x 4” CG with pin 3.5” above midline and a weight hole on my axis point."

what in the world does all this stuff mean.  I know the ball comes with the pin a certain distance from the cg.  how do you go about finding out axis point, pap, what is the midline, etc?  I know there are websites out there that can help somewhat but i need a stupid person explanation if possible.  I'd like to post some reviews of my equipment on here but i cant accurately do that if i have no clue how to truly explain how the ball is laid out.

Thanks,
Nick
--------------------
NC State Fan
Average jumped 10 pins since the change to Dyno-Thane.  Why not use it?
Logged

 

JamesCube

  • Full Member
  • ***
  • Posts: 172
Re: layout explanation
« Reply #1 on: October 14, 2005, 03:55:15 PM »
You'd find a positive axis point by looking at the oil rings (or if the ball is dry, the worn in track) and use a tool such as an Armadillo to find the point that is equidistant from the track/rings.  The Armadillo is just a plastic shell that sits on a ball and has rings on it.  You match one of the rings to the track and use a grease pen to mark the PAP, extremely simple.

"Drilling: 5” pin x 4” CG with pin 3.5” above midline and a weight hole on my axis point."

This means the pin is 5 inches away from the PAP, the CG is four inches away.  The midline is an invisible line that is basically halfway between your finger holes and thumb hole.  Pin distance from PAP helps determine the distance the ball will skid before rolling as well as how much flare a ball will produce.  The CG is basically used to tune the backend reaction of the ball.  The distance above a midline that a pin is placed will also affect length on the lane.  Putting weight holes in or past the axis point can increase flare.

Any other questions?
(If anyone sees anything wrong, plz feel free to correct it.)
Logged

Ragnar

  • Hero Member
  • *****
  • Posts: 14084
Re: layout explanation
« Reply #2 on: October 14, 2005, 03:59:24 PM »
5" pin = the pin (colored dot thingie) is located five inches from your PAP
4" CG = the CG (marked in various ways on each brand of ball) located 4" from PAP
(PAP = positive axis point - running short of time so I'll let someone else explain)
3/5" above midline = the pin is located 3.5 inches above a line drawn thru your center of grip
wt. hole on axis point = a hole drilled into the ball to bring it within legal static limits, or to adjust dynamics.  Axis point would be PAP

Briefly PAP is the axis point (there are 2, one at each end.  The other is NAP {negative ...), is the end of an imaginary axle around which your ball rotates.  The PAP, if marked, would appear to be stationary at the beginning of the balls roll, on the side you can see.  If you draw a line around the first flare ring (oil track), then find a point exactly in the middle of it, it is your PAP.)

--------------------
"How can you govern a country which has 246 varieties of cheese?" - Charles De Gaulle
"Government is the Entertainment Division of the military-industrial complex." - Frank Zappa
Logged
Wyrd bið ful aræd!
(Thought to be a member of something called the PMS club by some.)

wulfpackbwlr

  • Sr. Member
  • ****
  • Posts: 493
Re: layout explanation
« Reply #3 on: October 14, 2005, 05:33:17 PM »
Thankyou very much.  I actually believe I understand it now.  I see everyone using pap and 5 x 4, etc and couldnt figure out what it is.  i do appreciate the explanation.
--------------------
NC State Fan
Average jumped 10 pins since the change to Dyno-Thane.  Why not use it?
Logged
Pages: [1]
« previous next »