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Author Topic: Layout/drilling x-blem balls  (Read 3061 times)

mswitz88

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Layout/drilling x-blem balls
« on: February 10, 2014, 08:01:33 AM »
I am looking for some guidance on how to drill/layout an x-blem Storm Master Domination I picked up off ebay. The pin to CG is 7-3/8" and the pin to MB is 7-7/8" and they are all in line. It has 2.36 oz. top weight. What special considerations need to be made when drilling out these super long pin balls and how does having the cg and MB almost on top of each other effect how it needs to be laid out. I gather it will need a fairly good sized weight hole down low near the mb/cg but any help beyond that will be greatly appreciated. My PAP is 5 over 5/8" up. Thank you.
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Aloarjr810

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Re: Layout/drilling x-blem balls
« Reply #1 on: February 10, 2014, 08:21:03 AM »
If it helps this is from Storm:

≥ 6 3/4” Layout Instructions
Drilling a ball with a Pin to Cg distance greater than 6 ¾” may seem like an impossible task, but with a simple trick of physics(*1) the task becomes very easy.

Step 1) Measure 13 ½” from the center of Pin to the exact opposite side of the ball and create a tick mark (Pseudo-Pin).

Step 2) Measure distance from tick mark (Pseudo-Pin) created in Step 1 to the Cg as marked from manufacturing.

Step 3) Use the location of the tick mark (Pseudo-Pin) created in Step 1 and the new “Pseudo-Pin” to Cg distance measured in Step 2 to layout the ball.


If Steps 1 through 3 have been completed successfully, a standard pin distance length between 0” – 6 ¾” will have resulted. For example, a Pin to Cg distance originally measured at 10 ½” from the manufacturer’s Pin to Cg will actually have a “Pseudo-Pin” to Cg distance of 3”. Now, using the new pseudo-pin and the shorter 3” cg distance, any standard drilling technique for a 3” Cg distance will work.


(*1)When a ball is rotated off of a bowler’s hand around their Positive Axis Point (PAP), gravity will constantly pull at the top and the bottom of the ball. As the ball
rotates, gravity will equally affect both the positive and negative X-axis. In bowling terms, the manufacturer’s Pin marks the positive X-axis. Likewise, the negative Xaxis
is referred to as the “Pseudo-Pin” because it is 180 degrees opposite of the ‘normal’ Pin. Since both the positive and negative X-Axis will encounter the same
gravitational pull equally, it does not matter if ball is drilled using the regular Pin or the Pseudo-Pin so long as either have been properly orientated to the bowler’s PAP.
« Last Edit: February 10, 2014, 08:25:03 AM by Aloarjr810 »
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mswitz88

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Re: Layout/drilling x-blem balls
« Reply #2 on: February 10, 2014, 08:44:05 AM »
Quote from: Aloarjr810 on February 10, 2014, 08:21:03 AM
If it helps this is from Storm:

≥ 6 3/4” Layout Instructions
Drilling a ball with a Pin to Cg distance greater than 6 ¾” may seem like an impossible task, but with a simple trick of physics(*1) the task becomes very easy.

Step 1) Measure 13 ½” from the center of Pin to the exact opposite side of the ball and create a tick mark (Pseudo-Pin).

Step 2) Measure distance from tick mark (Pseudo-Pin) created in Step 1 to the Cg as marked from manufacturing.

Step 3) Use the location of the tick mark (Pseudo-Pin) created in Step 1 and the new “Pseudo-Pin” to Cg distance measured in Step 2 to layout the ball.


If Steps 1 through 3 have been completed successfully, a standard pin distance length between 0” – 6 ¾” will have resulted. For example, a Pin to Cg distance originally measured at 10 ½” from the manufacturer’s Pin to Cg will actually have a “Pseudo-Pin” to Cg distance of 3”. Now, using the new pseudo-pin and the shorter 3” cg distance, any standard drilling technique for a 3” Cg distance will work.


(*1)When a ball is rotated off of a bowler’s hand around their Positive Axis Point (PAP), gravity will constantly pull at the top and the bottom of the ball. As the ball
rotates, gravity will equally affect both the positive and negative X-axis. In bowling terms, the manufacturer’s Pin marks the positive X-axis. Likewise, the negative Xaxis
is referred to as the “Pseudo-Pin” because it is 180 degrees opposite of the ‘normal’ Pin. Since both the positive and negative X-Axis will encounter the same
gravitational pull equally, it does not matter if ball is drilled using the regular Pin or the Pseudo-Pin so long as either have been properly orientated to the bowler’s PAP.
Just trying to make sure I understand these instructions. I get the pseudo-pin concept but I am not sure I follow on how to "lay the ball out using the pseudo-pin". Do this mean I would be putting the pseudo pin wherever I would put my normal pin (i.e. say 1:30 above ring finger?? Wouldn't this put the actual pin on the backside of the ball and potentially have the core upside-down? Can you further try to explain that part of the instructions please? Thank you!
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Aloarjr810

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Re: Layout/drilling x-blem balls
« Reply #3 on: February 10, 2014, 01:03:09 PM »
Quote from: mswitz88 on February 10, 2014, 08:44:05 AM
Do this mean I would be putting the pseudo pin wherever I would put my normal pin (i.e. say 1:30 above ring finger??

Yes, You would use the pseudo pin as you would the normal pin.

Quote
Wouldn't this put the actual pin on the backside of the ball and potentially have the core upside-down?
Yes,
It doe's place the core "Upside down", because it's rotated the core 180 degrees and the normal pin is on the backside of the ball.

That's what this part explained
(*1)When a ball is rotated off of a bowler’s hand around their Positive Axis Point (PAP), gravity will constantly pull at the top and the bottom of the ball. As the ball
rotates, gravity will equally affect both the positive and negative X-axis.

In bowling terms, the manufacturer’s Pin marks the positive X-axis. Likewise, the negative X axis is referred to as the “Pseudo-Pin” because it is 180 degrees opposite of the ‘normal’ Pin.

Since both the positive and negative X-Axis will encounter the same gravitational pull equally, it does not matter if ball is drilled using the regular Pin or the Pseudo-Pin so long as either have been properly orientated to the bowler’s PAP.



As for how the MB factors in I don't know.

I would weigh up the ball and spin it up on a determinator to double check CG and MB locations before doing anything.

I would spin the ball and find the MB first, I think the pin or MB is probably mismarked. the pin and the MB(PSA) should be 6 3/4" apart.

« Last Edit: February 10, 2014, 01:33:51 PM by Aloarjr810 »
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