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Author Topic: Drilling and Layout Question  (Read 1616 times)

Rival

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Drilling and Layout Question
« on: December 03, 2008, 07:46:39 PM »
I'm looking into laying out my own stuff, I've been reading and asking around a few questions picking up a little everywhere I can... but I have one that maybe one of you can answer.  I understand a little bit of laying the ball out.  Let's say I want to use a 4 x 4.  I know this means 4 inches from the Pin to the PAP, and 4 inches from the Mass Bias to the PAP.  You would want to draw a radius around the pin and the mass bias that is four inches for both, and where they intercept would be the spot for the PAP.  What does a company mean when they say use a xx inch pin buffer?  I'm not sure what they are talking about.  Halp plz.
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azguy

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Re: Drilling and Layout Question
« Reply #1 on: December 04, 2008, 04:11:49 AM »
Storm defines it as this:

Pin Buffer
The distance the pin is from the bowlers Perpendicular Axis Line or PAL (also called Vertical Axis Line - VAL).


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az guy aka: R & L Bowlers Pro
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Goof1073

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Re: Drilling and Layout Question
« Reply #2 on: December 04, 2008, 06:00:16 AM »
azguy's definition is correct, but here is how to do it:

1)Draw another radius around the pin that's equal to the desired pin buffer.
2)Take your quarter scale / armadillo and utilize it to draw a line that runs through your previously identified PAP and touchs the edge of the bun buffer radius.

There are a number of ways to layout bowlings balls and personally I like Mo's dual angle technique...but it's just another method:

https://www.buddiesproshop.com/114/Mo_Pinel_Dual_Angle_Layout_Technique.htm

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-Chris: DJ's Pro Shop : Auburn, MA
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Rival

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Re: Drilling and Layout Question
« Reply #3 on: December 04, 2008, 10:18:00 AM »
What is the point of the pin buffer, how does it alter reaction?
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Dan Belcher

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Re: Drilling and Layout Question
« Reply #4 on: December 04, 2008, 10:19:37 AM »
The smaller the pin buffer (the closer the pin is to your vertical axis line), the quicker the ball will respond to friction (more angular breakpoint).  The larger the pin buffer, the slower it will respond to friction (more rolly reaction).
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Rival

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Re: Drilling and Layout Question
« Reply #5 on: December 04, 2008, 10:22:29 AM »
And does the VAL run parallel to my Center Grip line?
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Nodsleinad

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Re: Drilling and Layout Question
« Reply #6 on: December 04, 2008, 10:25:44 AM »
http://www.morichbowling.com/MosCorner/DualAngleSeminar/DualAngleSeminar.htm

I use this technique as it is much easier and I get the expected results more often
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Goof1073

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Re: Drilling and Layout Question
« Reply #7 on: December 04, 2008, 10:38:32 AM »
quote:
And does the VAL run parallel to my Center Grip line?
 Yes it does.
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-Chris: DJ's Pro Shop : Auburn, MA
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Rival

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Re: Drilling and Layout Question
« Reply #8 on: December 04, 2008, 03:44:47 PM »
Alright, sorry if I'm beating this topic into the ground... but I just want to learn how to layout my own stuff, my proshop guy can throw the holes in it. =D

So correct me if I'm wrong, I'm going to attempt to lay out the directions in a nutshell, and you tell me if its good or not.  I've been messing with an age old ball that I never throw anymore, and I mean, its only a pencil.


Step 1: Decide on the layout, for my example I will use a 4 x 4 with a 2 inch pin buffer. (The recommended drilling on my next ball, Hello Virtual Gravity.)

Step 2: Using the pin as the centerpoint, draw a circle with a 2 inch radius to determine the pin buffer.

Step 3: Using the pin as the centerpoint, draw a circle with a 4 inch radius, repeat for the mass bias. (Obviously the numbers change here with the layout.)

Step 4: Where the lines in step 3 intersect is the desired PAP.  Mark this point.

(Here's where the educated guess comes in)

Step 5: Make a line that goes through the desired PAP, and have it touch the edge of the circle in step 2.  This will be your VAL.  (I'm sure you can use something besides an armadillo, can't you?)

Step 6: Measure backwards from you're PAP to find your center grip.  In my case I would measure 5 and 3/4 right, and 1/4 down, being a lefty.  You're center grip line should be parallel with the VAL.

Step 7: Measure spans and punch some holes!



Do I have the right idea here?
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"So there I was... BALLS DEEP!!!"

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JohnP

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Re: Drilling and Layout Question
« Reply #9 on: December 04, 2008, 08:08:55 PM »
quote:
quote:
--------------------------------------------------------------------------------
And does the VAL run parallel to my Center Grip line?
--------------------------------------------------------------------------------

Yes it does.


Wrong, the VAL runs perpendicular to the grip mid line through the PAP and intersects with the center line above the thumb hole.  To be parallel to the grip center line it could not intersect with it.  The only parallelism on a sphere is concentric circles.  --  JohnP
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Rival

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Re: Drilling and Layout Question
« Reply #10 on: December 04, 2008, 08:48:51 PM »
I know that... but if you were to take a small section from each they would appear to be parallel, its impossible to draw two straight continuous lines on a sphere without having them intersect... are my steps right?
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"So there I was... BALLS DEEP!!!"

My Arsenal:

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Roto-Grip RSX
Ricochet Revenge
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JohnP

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Re: Drilling and Layout Question
« Reply #11 on: December 05, 2008, 09:58:43 AM »
OK, sometimes I get overly picky about descriptions and definitions.  Your steps are correct.  All the pin buffer does is determine exactly where the pin ends up for your 4 x 4 layout.  You can use pin height above the mid line the same way.  For any layout once the PAP location is determined the pin can be located anywhere on an arc centered on the PAP with a radius of the pin to PAP distance.  The final step, whether it be pin height, pin buffer, or an angle simply pinpoints the location.  Sometimes, after you determine your desired location you have to modify it because the pin falls too close to a hole.  --  JohnP
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Rival

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Re: Drilling and Layout Question
« Reply #12 on: December 05, 2008, 05:32:21 PM »
Alright... thanks a lot.  I think that'll do for me.  Is there a standard distance between the pin and mass bias?
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"So there I was... BALLS DEEP!!!"

My Arsenal:

Storm Ace
Roto-Grip RSX
Ricochet Revenge
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pro shop guy

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Re: Drilling and Layout Question
« Reply #13 on: December 05, 2008, 05:37:57 PM »
6 3/4"
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walterrayseggs

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Re: Drilling and Layout Question
« Reply #14 on: December 06, 2008, 08:58:34 AM »
I'm thinking of rebuilding the engine in my car. Can anyone tell me what an alternator is?


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