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Author Topic: Pro-pin, "pro-CG," MB questions/comments...  (Read 1449 times)

JessN16

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Pro-pin, "pro-CG," MB questions/comments...
« on: June 17, 2006, 11:41:40 AM »
I've got a bevy of questions I'd like to get answered...

1) What's the difference between "pro pin" and "pro CG" balls? I know "pro pin" generally just means a pin being way out.

2) What happens on a ball with a marked MB if the MB and the CG happen to be virtually on top of each other? In such a case, what's the best drilling to use?

3) Is it weird to say the following: "I've had my best luck in the past out of balls that were pin-way-out, drilled over the bridge, with the CG in the palm."? Because I have. I don't know why, but I have.

And if anyone can tell me why this has been true for me, I'd love to know.

Jess

 

shelley

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Re: Pro-pin, "pro-CG," MB questions/comments...
« Reply #1 on: June 17, 2006, 07:51:46 PM »
quote:
1) What's the difference between "pro pin" and "pro CG" balls? I know "pro pin" generally just means a pin being way out.


Pro CG might refer to a CG that's very out of line with the pin/MB line.    In either case, they're seconds, blems.

quote:
2) What happens on a ball with a marked MB if the MB and the CG happen to be virtually on top of each other? In such a case, what's the best drilling to use?


It's just a long-pin ball.  Ignoring the CG and laying it out using the MB may result in a lot of trouble with static weights.  As with many long-pin balls, putting the pin high may be your only option unless the top weight is fairly low.  If the top weight is high, you may have to have a low weight hole.  You probably also couldn't swing the MB out to the VAL and still maintain legal static weights.

quote:
3) Is it weird to say the following: "I've had my best luck in the past out of balls that were pin-way-out, drilled over the bridge, with the CG in the palm."? Because I have. I don't know why, but I have.


Dunno why that would be the case.  Longer pins tend to make the ball roll later, though whether that's because they usually get drilled with the pin up high, I don't know.  Some people just have a lot of success with certain layouts while other layouts don't work at all.

SH

charlest

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Re: Pro-pin, "pro-CG," MB questions/comments...
« Reply #2 on: June 17, 2006, 07:54:51 PM »
I can only answer part of your query.

Pro-pins are balls with large pin-CG distances, on the order of 5" or more. I assume these are the ones you like.

I've recently read somewhere (forget exactly where; sorry) that pro-CG balls are balls with a marked Mass Bias and where the CG is well off from the Pin-MB line. Usually the Pin, Cg and MB are all in-line or close. With a pro-CG ball, I assume, if you're looking at the Pin as being at the top and the MB at the bottom of a picture, then, a Pro-CG, would have the CG either well to the left or well to the right of that perpendicular, North-SOuth line made by the pin and the MB.

One advantage might be, for a righty, if yo uwanted to shift the pin-MB line towards the PAP, then the CG might still be in the neighborhood of the gip center; so the drillign wouldn't need a weight hole.

On the other hand, if the CG were to the left, and the pin-MB line were closer to the grip center, then the ball woudl need a weight hole near or around the PAP or placed where it might do the most good, depending on a few other factors.

Don't forget the top weight reflect how much must be taken out to make the ball legal. Pro-CG may allow you to take out more weight (would change the size of the weight hole needed) and, thus, affect the core or the static weight more, depnding on your philosophy.

--------------------
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JessN16

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Re: Pro-pin, "pro-CG," MB questions/comments...
« Reply #3 on: June 17, 2006, 08:09:10 PM »
Thanks guys. This site is the best.

To further expand on my pin-up drillings, if those things put the ball into a roll later, that's a good thing for me. I can't loft the guttercap or play fifth arrow with much confidence, so a ball that's rolling later lets me play more direct without worrying about it checking up too soon and smashing the face.

Jess

JohnP

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Re: Pro-pin, "pro-CG," MB questions/comments...
« Reply #4 on: June 17, 2006, 08:10:36 PM »
quote:
2) What happens on a ball with a marked MB if the MB and the CG happen to be virtually on top of each other? In such a case, what's the best drilling to use?


I suspect the cg is mismarked.  I would not drill a ball like this without confirming the cg location and the top weight.  --  JohnP