Author Topic: Gradient Line Balance Hole Placements (Read 10682 times)

LiquidHero · « **on:** April 15, 2008, 10:48:10 AM »

I am not sure if this has been discussed or not but here is a link to the Morich website that explains Gradient Line Balance Hole Placements. Just wondering if anyone has thoughts or comments on this.
http://morichbowling.com/MosCorner/GradientLineBalanceHole/GradientLineBalanceHole.htm

purduepaul · « **Reply #31 on:** May 02, 2008, 11:29:04 AM »

T-God,

I would like to thank you for being two years behind in reading technical papers about bowling.

As the ball flares, your PAP changes, so there are different axis points around the ball as it travels down the lane. The preferred spin axis is the final axis of rotation when the ball has flared out. It's your final PAP..!!

You must be having a bad day, becuase I know you know this.

Dead wrong! Sorry, Your RG about your PAP will not noticeably change as the ball rolls down the lane.

If you doubt this read this article from bowl.com to explain.
http://www.bowl.com/articleView.aspx?i=13372&f=21

So as to provide you with further DATA! I threw the two symmetrical balls that I am doing as the real world check for Mo's gradient line analysis.
Here is the data from those tests.

Hole Location low RG (Rgx) Total Diff i-Diff Top/Bottom Side Finger
P1 2.51 .048 .009 -2.0 -1.375 0 P4 2.493 .076 .023 -1.8125 -1.125 -1.5

Tests were done with Harry on the standard 53' flat pattern 1000 grit abralon. Balls were thrown in an 8 shot ABBABAAB test pattern.

Hole Location intended Path-49'(boards) Breakpoint (ft)
P1 9.79 38.8
P4 12.05 35.4

As you can see by the data, the ball with P4 has almost a three and a half foot earlier breakpoint and covers two more boards than the ball with the P1 hole.

So therefore your conclusions based on your opinion!are wrong. Sorry.

You PAP will not end up on your PSA. A P4 hole is much stronger than a P1 hole, and you can keep saying your opinions what you want but this is the Science Have a great day!

--------------------
"Oops, Looks like we are going to need another timmy." -Dr Lizard, "Dinosaurs"

T-GOD · « **Reply #32 on:** May 02, 2008, 02:29:10 PM »

Purdue, when I'm talking about different PAP's, this is what I'm referring to...

quote:
when a bowler releases a ball during delivery, the ball will first begin rotating about what is called his or her positive axis point (PAP). Simply defined, the positive axis point serves as the initial point of rotation. Then, due to the influence of ball properties, bowler attributes, lane conditions and the laws of physics (unstable to stable), new axis of rotation will exist as the ball travels down the lane. This change from the initial point of rotation to each subsequent point of rotation is called "Axis Migration."

quote:
Each flare ring will have an individual axis that the ball has rotated about to create that particular flare ring.

quote:
Thus, for each flare ring, there is an axis point.

Once the ball flares enough it'll eventually hit the balls PSA. That's what the Determinator does. It spins the ball until it reaches that point. The ball is flaring/rotating until it reaches the PSA. Once it reaches that point, it stays at that point. Meaning, the ball will flare no longer. On the lane, the ball is rolled out and will stop hooking. =:^D

Edited on 5/2/2008 2:35 PM

purduepaul · « **Reply #33 on:** May 02, 2008, 03:08:49 PM »

T-God, Congrats on quoting the bowl.com piece, the ball will not rotate around the psa because on the lane the ball is always losing energy to friction. The reason the ball rotates around the high RG or PSA which are synonomus with a deTerminator is that a deTerminator adds energy to the bowling ball. So while the ball is on the lane all sixty feet of it. The RG about the PAP will approx be the same.

I'll see you on May 12th Richie......

Paul Ridenour
USBC Resarch engineer
paul.ridenour@bowl.com
--------------------
"Oops, Looks like we are going to need another timmy." -Dr Lizard, "Dinosaurs"

T-GOD · « **Reply #34 on:** May 02, 2008, 07:43:48 PM »

Purdue, I'm not Richie, but thanks for the props..!!

quote:
the ball will not rotate around the psa because on the lane the ball is always losing energy to friction.

The ball may not rotate about the PSA on the lane because the lane is too short, not because the ball is losing energy to friction.

quote:
So while the ball is on the lane all sixty feet of it. The RG about the PAP will approx be the same.

How can the RG/(low RG) about the PAP be the same throughout the whole 60 ft. of the lane when the PAP is migrating around the ball, to different distances from the pin..?

I believe there's something wrong with your data Purdue...

quote:
So as to provide you with further DATA! I threw the two symmetrical balls that I am doing as the real world check for Mo's gradient line analysis.
Here is the data from those tests.

Hole Location low RG (Rgx) Total Diff i-Diff Top/Bottom Side Finger
P1 2.51 .048 .009 -2.0 -1.375 0 P4 2.493 .076 .023 -1.8125 -1.125 -1.5

With the P1 hole, it's showing you have 2oz. bottom weight as well as 0 finger weight. With the P4 hole, it shows you have less bottom weight and also 1.5 oz. thumb weight. Now, in order to have less top, the P4 hole has to be to the right of the P1 hole and/or PAP.

And, in order to have -1.5 finger(1 1/2 oz. thumb), the P4 hole and PSA also needs to be above the midline. I've never seen a ball layout with this location of a PSA before. Please explain what kind of drilling/layout you're using and/or how this can be... =:^D

Author Topic: Gradient Line Balance Hole Placements (Read 10682 times)

LiquidHero

Gradient Line Balance Hole Placements

purduepaul

Re: Gradient Line Balance Hole Placements

T-GOD

Re: Gradient Line Balance Hole Placements

purduepaul

Re: Gradient Line Balance Hole Placements

T-GOD

Re: Gradient Line Balance Hole Placements