Author Topic: Explaination of Definitions, please help I am lost (Read 1777 times)

Zahrobsky · « **on:** August 11, 2003, 11:01:17 PM »

Hello,

As I am not a novice to the game, I am a novice in the technical department.

Please help me understand the different top weights and what happens from 2 to 4oz. Also, what the Pin Position does. Please tell what the extremes do. (i.e. What does this mean, "pins 2-4, and tops all close to 3"

Thanks for your help. I have read the definitions, but I can't seem to understand them yet.

Thanks,
Kris

Constantine · « **Reply #1 on:** August 12, 2003, 03:10:48 PM »

quote:
What does this mean, "pins 2-4, and tops all close to 3"?

Distance from the pin to the CG is between 2" to 4" and the top weight is near 3 oz.

Now for the complicated questions...

1) What does pin position do?

The pin tells you the orientation of the weightblock. The orientation of the weightblock at release is a major factor on the shape of the hook.

A horizontal weightblock (pin on axis) will rev up early with minimum flare. This causes early roll and an arcing motion.

A vertical weightblock (pin in track) will rev late with minimum flare. This causes length and a flip motion.

A weightblock at a 45 degree angle (pin halfway between track & axis = 3 3/8" from PAP) puts the weightblock is its least stable position. This will give the ball average length and maximum flare. Generally, this is maximum hook.

2) Help me understand top weights

In the beginning...weightblocks were just there to offset the weight removed for the fingerholes. People learned that they could put the fingerholes in a different spot and let the weightblock affect ball reaction. To counter this, the powers that be made static (not moving) weight rules. After drilling, a ball can be 3 oz heavier on the top than the bottom and only 1 oz different from side-to-side.

Eventually, ball makers learned to make bigger & different shaped weightblocks. This allowed the ball's dynamic (moving) weight to overpower the static weights. This grew until today's pin positions and such.

For the non-pro, static weight difference are meaningless; the dynamic weight from the pin position are much stronger. However, you still must obey the old static weight rules.

To put it all together, I'll create a scenario (some of this is advanced concepts so for now just trust me on it okay)...let's say you want length but a stable backend reaction. The driller recommends a 5 x 2 drilling. This puts the weightblock (5" from PAP) close to vertical but still leaves some flare. The CG (2" from PAP) placement makes the ball more stable. So what pin distance ball and top weight should you choose?

The 2" PAP to CG means that the top weight will be close to your axis. So you will be in danger of violating the 1 oz side weight rule unless you drill a weighthole. You want length so you prefer not to have a weighthole (or at least a small one) so look for very low top weight.

For pin distance you need at least two inches (4-2=2); however, you want the pin above your fingers for length, so you'll want more than just the minimum 2" or the CG will have to go higher which could cause too much finger side weight.

That scenario turned out more complicated than I planned, but hopefully you get the drift. If I lost you, don't worry about it too much. You'll be able to accomplish most drillings with a 2" pin distance and 3 oz top weight.
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Good luck & good bowling

T-GOD · « **Reply #2 on:** August 12, 2003, 03:17:07 PM »

Top weighted balls around 2 oz., when drilled inconjunction with side weight, normally end up with bottom weight. This makes the ball start hooking sooner, and rolling out quicker.

Balls starting with 2 1/4 - 2 3/4, when drilled inconjunction with side weight, end with sllight amounts of top weight, making the ball go longer and rolling smoother, more continuous, on the backend, sort of like an axis weight. Works better on drier lanes.

Balls starting with 3 - 4 oz. top wieght, when drilled inconjunction with side weight, start hooking midlane and more violent on the backend. Will roll out on drier lanes. Works better on medium lanes.

Balls starting with 4 1/2 + top weight, when drilled inconjunction with side weight, will roll earlier, more end over end. Works better when the heads are hooking and/or playing more direct.

Pins positions work the same as top weight does. Pins closer to your track make the ball roll more end over end. Works better on drier heads/fronts.

Pins closer to your axis point, give you more length and a smoother, more continous backend reaction. Works better on drier backends.

Pins between 2 - 5" from your PAP/positive axis point, give you a stronger backend reaction. Works better on medium conditions.

A 2-4" pin, means that the pin is 2-4" from the balls center of gravity marking on the ball.

Tops close to 3, means the starting top weight is close to 3 oz. =:^D

Edited on 8/12/2003 3:30 PM

Zahrobsky · « **Reply #3 on:** August 12, 2003, 05:33:15 PM »

Thanks everyone!!!

Author Topic: Explaination of Definitions, please help I am lost (Read 1777 times)

Zahrobsky

Explaination of Definitions, please help I am lost

Constantine

Re: Explaination of Definitions, please help I am lost

T-GOD

Re: Explaination of Definitions, please help I am lost

Zahrobsky

Re: Explaination of Definitions, please help I am lost