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Author Topic: Storm/Roto Grip Pin Buffer Layout Techique  (Read 12347 times)

FranVarin

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Storm/Roto Grip Pin Buffer Layout Techique
« on: November 25, 2009, 08:43:51 AM »
Hi, I'm look to find someone who can answer a few technical questions regarding the Storm/Roto Grip layout technique. The technique is very simple and accurate but, there are a couple of questions that I have specifically about the Pin Buffer:

1. It seems that in most cases the Pin ends up located above the fingers and in a spot quite a bit of distance from the fingers in some cases. Since Pin above the fingers causes an increase in length and Pin below the fingers causes the ball to start up sooner. How does this layout technique accommodate that? How can I move the pin either below or above the fingers and still maintain the pin to pap and mb to pap distance?

2. I understand that the smaller the pin buffer the sharper the backend reaction and the longer the pin buffer the smoother the backend. Is there some good documentation on what is the recommended ranges to use for most bowlers? Is there a minimum and maximum size that should be used?

3. Does anyone know of good documentation on this layout technique that goes into reasonable depth on how best to use it for layout?


Any help anyone can provide would really be appreciated!

Fran
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Fran Varin
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Baliktad

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Re: Storm/Roto Grip Pin Buffer Layout Techique
« Reply #16 on: December 09, 2009, 02:52:40 AM »
quote:
What I was hoping to find was some documentation on how changing the pin buffer effects the layout."

http://www.rotogrip.com/products/balls/video/default.asp?vname=Seminar12
 Here is link to the rotogrip website. Start miday in Seminar 12 and the beginning of 13 and they will totally explain what you are looking for.
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JohnP

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Re: Storm/Roto Grip Pin Buffer Layout Techique
« Reply #17 on: December 09, 2009, 09:27:01 AM »
quote:
However, I cannot wrap my head around how the Pin buffer actually effects the layout and subsequent ball motion.


Pin buffer is simply another way of setting pin height after the PAP location has been determined.  Smaller buffer distance gives a higher pin placement and longer buffer distance gives a lower pin placement.  All any layout technique can do is set pin to PAP distance, pin to cg or mb distance, and pin height, all of which determine the exact position of the gripping holes.  Use whichever system makes the most sense to you.  --  JohnP
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TBS1

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Re: Storm/Roto Grip Pin Buffer Layout Techique
« Reply #18 on: December 10, 2009, 08:57:51 AM »
I may be wrong in this statement, but I am pretty sure that the Pin buffer kinda reinforces what type of reaction you are trying to set up with the mb (psa) to pap.
--------------------
James McCarter
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JohnP

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Re: Storm/Roto Grip Pin Buffer Layout Techique
« Reply #19 on: December 10, 2009, 10:21:05 AM »
After you've set the PAP location by whatever method you like best the pin can be located anywhere on an arc centered on the PAP and with radius of the length of the line from the PAP to the pin.  Let's say the PAP is 4 1/2" from the pin.  Use your compass to draw an arc centered on the PAP with radius of 4 1/2".  The pin can be located anywhere on that arc.  It makes no difference whether you use the height above the midline or the distance from the vertical axis line to specify the location, the layout ends up the same.  The grip center and mb (or cg, or mb to pin to PAP angle) will all rotate as you change the pin location on the arc.  Try it on a ball and it will become obvious, it's easier to see than to explain.  --  JohnP
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FranVarin

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Re: Storm/Roto Grip Pin Buffer Layout Techique
« Reply #20 on: December 16, 2009, 05:13:42 AM »
JohnP,

While in the shop I did what you suggested with the arc from the PAP to PIN and then laid out a ball changing just the Pin buffer. I wanted to pass along that your post help a lot in understanding the effect of the Pin buffer...Thanks! I now have a much better understanding of how to use this technique.

Fran
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Fran Varin
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JohnP

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Re: Storm/Roto Grip Pin Buffer Layout Techique
« Reply #21 on: December 16, 2009, 10:14:46 AM »
You're welcome, glad it helped.  It took me quite a while before I realized how this worked.  --  JohnP
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Dave_in_Rio_Rancho

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Re: Storm/Roto Grip Pin Buffer Layout Techique
« Reply #22 on: December 26, 2009, 08:38:34 PM »
By the way, here is the Roto Grip version of doing the pin buffer layout:
http://www.rotogrip.com/products/pdf/asymmetrical-drill-guide.pdf
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