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Author Topic: Weight Hole Pitches  (Read 2448 times)

Monster Stitch

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Weight Hole Pitches
« on: April 09, 2009, 02:53:26 AM »
When i drill my own equipment and need a weight hole, i usally keep the pitches zero, zero. Now for example, i need a weight hole in a ball and i am going put it 5 inches straight across from center of span and instead of drilling it with a zero pitch, what happens if i put it at 3/4 away. Is there any difference?
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JohnP

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Re: Weight Hole Pitches
« Reply #1 on: April 09, 2009, 04:38:44 PM »
Yes, for one thing you will most likely miss the core so you won't get any effect from core modification.  Also, it's going to slightly change the distribution of the imbalance weights removed (top/bottom, pos/neg side, finger/thumb).  I would think the effect would be about the same as moving the hole about 1/4" in the direction of the pitch and drilling at 0, 0.  These are educated guesses, maybe someone with greater balance hole knowledge can confirm or reject.  --  John
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hbomb151

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Re: Weight Hole Pitches
« Reply #2 on: April 10, 2009, 07:43:40 PM »
I was at a Brunswick/Morich seminar , and Mo said pitching a weight hole does absolutly nothing. I'm not going to argue with the MAN.
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Raven829

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Re: Weight Hole Pitches
« Reply #3 on: April 10, 2009, 07:53:48 PM »
quote:
I was at a Brunswick/Morich seminar , and Mo said pitching a weight hole does absolutly nothing. I'm not going to argue with the MAN.


That's interesting because I seem to remember him being the biggest advocate of pitching weight holes.  

I've only had it done twice.  The first was on a Gravity Shift that I was having issues with.  It had a hole but I plugged it up and Hank Boomershine put a new one in it that had an extreme pitch.  I have no idea why he did it that way, but it worked.  The other pitched one was just so the hole didn't come out of the bottom of my thumb due to some odd lateral thumb pitch I use.

Don
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raiderh20boy

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Re: Weight Hole Pitches
« Reply #4 on: April 10, 2009, 08:30:11 PM »
Interesting comment on Mo.
Taken from a MORICH drill sheet
"When a balance hole is necessary, place the balance hole at the intersection of the VAL and a line drawn from the center of the grip through the CG . Pitching the balance hole 1 1/4" away from the center of the grip will increase flare"
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Greg T

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Re: Weight Hole Pitches
« Reply #5 on: April 11, 2009, 11:11:04 PM »
a weight hole on your positive axis point will cause the ball to roll up sooner

a weight hole between your positive axis point and your grip will remove top and side weights allowing the ball to react smoother and will flare less

a weight hole past your positive axis point will increase backend reaction and length caused by more flare

Just as you could pitch a thumbhole, so could the weighthole be pitched.

Pitching the weight hole away from the palm preserved more top weight in the ball thus enhancing the backend and the hit of the ball.

Pitching the hole towards the palm caused the ball to lose more topweight and thus making a smoother reaction.

Pitching towards the thumb will cause more length and a sharper backend reaction. Pitching towards the fingers will have an opposite effect.

The current way of thinking if you are strictly worried about getting the ball back within the legal ABC limits is to place the weighthole at the intersection of a line drawn from the grip center, through the CG to the vertical axis line. A hole placed here will stand a 95% chance of getting the ball back within the limits.

That help???
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REvans284

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Re: Weight Hole Pitches
« Reply #6 on: April 12, 2009, 09:46:25 PM »
quote:
a weight hole on your positive axis point will cause the ball to roll up sooner

a weight hole between your positive axis point and your grip will remove top and side weights allowing the ball to react smoother and will flare less

a weight hole past your positive axis point will increase backend reaction and length caused by more flare

Just as you could pitch a thumbhole, so could the weighthole be pitched.

Pitching the weight hole away from the palm preserved more top weight in the ball thus enhancing the backend and the hit of the ball.

Pitching the hole towards the palm caused the ball to lose more topweight and thus making a smoother reaction.

Pitching towards the thumb will cause more length and a sharper backend reaction. Pitching towards the fingers will have an opposite effect.

The current way of thinking if you are strictly worried about getting the ball back within the legal ABC limits is to place the weighthole at the intersection of a line drawn from the grip center, through the CG to the vertical axis line. A hole placed here will stand a 95% chance of getting the ball back within the limits.

That help???
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I have to agree with Greg on this one.  

I had a ball I didn't know was slightly illegal due to positive side weight.  And we decided to put an x hole on my val which is somewhere around 2" down on my val (thats a guestimate), but he pitched it towards my thumb and up slightly..  The ball has a much much weaker reaction on the back.  it tries to read and when it does  its slightly earlier but it just rolls out.  I'm not sure what to do to fix the situation other than plug the hole and change the pitch or move it.  But I've made a surface change and I'm going to see what it does tomorrow.

Later,

REvans284

Edited on 4/12/2009 10:13 PM
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