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Author Topic: About drilling's with the PIN inside the ring finger...  (Read 11377 times)

Ric Clint

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About drilling's with the PIN inside the ring finger...
« on: December 06, 2003, 04:32:55 AM »
Why do I see some balls with the PIN's inside the ring finger? What does this do as far as ball reaction?

Instead of putting the PIN inside the ring finger hole, why not just put it above, beside, or below the finger hole?


My driller says that if you put the PIN above the ring finger and put the CG at 1/2" right of grip center that the ball will go long and NOT have that much backend... but, if you put the PIN inside the ring finger hole and put the CG at the same place as above (which is 1/2" right of grip center), that the ball will go long and have a MUCH stronger backend than the above drilling.

Anybody agree???





Edited on 12/6/2003 8:32 PM
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charlest

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Re: About drilling's with the PIN inside the ring finger...
« Reply #1 on: December 06, 2003, 08:19:34 PM »
Your driller must think that drilling out the pin does something to the core to increase the ball's reaction. I'd like to understand how it does that. I had never heard or read of that before, but then I haven't heard of everything and have been wrong more than once ...

I'd be inclined to think that the difference in the ball's reaction (other than what was taken out of the core) is based on the differences in the pin's distance from the bowler's axis point (PAP). The higher above the bridge the pin is, the greater the distance from the PAP (= less flare) and the higher the RG of the drilled ball (the longer it will go before revving up).

If one of the driller pros can explain another difference, I'd love to learn. (No sarcasm is intended in any of the above statements.)

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I found balls with pin above ring finger and CG below will go longer and hook less than the same ball with the pin below the ring finger and the CG stacked below, but the difference was not huge, but it was sometimes significant. In fact there are 2 pearls that I will be redrilling to place the pin above the bridge, just to make them go longer and to reduce the reaction; I don't expect a HUGE difference.

I'd expect putting pin in the ring finger to make less of a difference.
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NoNeed4Revs

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Re: About drilling's with the PIN inside the ring finger...
« Reply #2 on: December 06, 2003, 08:24:54 PM »
I think your driller is exagerating quite a bit. It's true that lowering the position of the pin on the ball will create a little more backend, but we're talking about moving it about an inch here. If you put it in the ring it will move a bit more, but if you put it BELOW the ring it'll move even more than that. Unless you have some really strange axis point that I'm not expecting (uh... like your ring finger).... it shouldn't matter THAT much.
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charlest

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Re: About drilling's with the PIN inside the ring finger...
« Reply #3 on: December 06, 2003, 10:52:05 PM »
NoNeed4Revs wrote:
quote:
I think your driller is exagerating quite a bit. It's true that lowering the position of the pin on the ball will create a little more backend ...


I've never heard that before.
I've read and seen, in my balls, that putting the pin below the bridge, as opposed to above the bridge, makes the ball go into a roll earlier, that is, has less length. This is usually to enable the ball to either handle more oil or to accomodate a bowler's higher speed rate. The ball's reaction will generally have more overall hook, but maybe less actual backend.

Could you elaborate on "more backend with a lower pin"? (No sarcasm intended.)
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scotts33

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Re: About drilling's with the PIN inside the ring finger...
« Reply #4 on: December 06, 2003, 11:14:15 PM »
Just my opinion here, but not many fitter/drillers would subject their bits to drilling into a pin because of the damage it would do to bit.  Bits are very expensive and life would be shortened if doing this on a regular basis.

Scott
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Scott

omegabowler

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Re: About drilling's with the PIN inside the ring finger...
« Reply #5 on: December 07, 2003, 12:25:33 AM »
i actually drill most of my balls with the pin in ring finger.

first I have found that pins located in a zone around my ring finger worked for me. that zone being 1/2" below,above or on the side.

I Was given advice from a top notch guy, Bill Calhoun(sp) from ebonite. On a side note I met him and his wife at a Ebonite Demo days. Great people.they are nice and they are helpful. they also bring knowledge to the table that you just can't get from a bowling site. no offense to the local experts.

Bill watched me bowl. studied my ball track for about 10 secs. he said that the sweet spot for my pin placement was the pin in the ring finger. all wt holes should be 1" below my PAP.


What this did for me is inhance my ball track. I have an inverted ball track and sometimes run over the fingers with certain cores. every ball that I have drilled with the pin in my sweet spot has preformed great for me. the tracking has moved that ever so much that I needed. also the distance from my thumb to track has moved away. insuring a high flaring ball will not flair over my thumb.I get a great read from my equipment and really notice when it turns the corner. Mybe I'm just seeing this more clearly than I did a year ago. Maybe when things sync up in your game, everthing make more sense. who knows.


The point is the pin in the ring is good if it means something relative to your game.

as just a matter of weight distribution, removing core material and some of the top of the weight block will shorten the core. which should make it more stable and less flippy.

I would imagine that some fancy cores would not work with this but a simple core with strong MB properties, like the predator Pursuit worked great for me.
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scottie

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Re: About drilling's with the PIN inside the ring finger...
« Reply #6 on: December 07, 2003, 12:40:03 AM »
the cg placement has more to do with backend than the pin inside the ring finger...it will make very little difference if its beside teh finger hole--cg is key
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1fife

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Re: About drilling's with the PIN inside the ring finger...
« Reply #7 on: December 07, 2003, 08:49:35 AM »
sometimes you want the cg(or mb) and pin an exact distance from the pap. And the pin lannds in the hole-no big deal


I ahve found it better to put it right in the hole than just next to or cutting half the pin out-this will sometimes crack. If it in the hole=no cracking
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solid9

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Re: About drilling's with the PIN inside the ring finger...
« Reply #8 on: December 07, 2003, 11:53:02 AM »

 If you think that the pin material is the same material as the core, it might make sense.
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