Post by: bowlingmytmouse on November 07, 2006, 07:07:54 AM
I was wondering what the pros/cons and/or benefits are of pitching a weight hole.
Thanks in advance,
BMM
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Post by: T-GOD on November 07, 2006, 03:16:36 PM
If the hole needs to be placed to an area where the ball will flare over the hole, then you can move the hole an inch or so in the opposite direction, then pitch it accordingly to cut underneath the center of the area it was originally supposed to be drilled at.
That's the primary purpose of pitching weight holes. =:^D
Post by: kmanestor22 on November 07, 2006, 03:23:38 PM
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Post by: bowlingmytmouse on November 07, 2006, 09:48:46 PM
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Roto Grip forever!!!! What else is there??
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Post by: kmanestor22 on November 10, 2006, 04:30:46 PM
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Post by: StarGumbo on November 10, 2006, 04:32:40 PM
Edited on 11/10/2006 5:25 PM
Post by: Greg T on November 10, 2006, 06:14:59 PM
Just as you could pitch a thumbhole, so could the weighthole be pitched.
Pitching the weighthole 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.
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Post by: MegaMav on November 10, 2006, 06:38:11 PM
quote:
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.
maybe im getting tired, but, i didnt quite follow that.
Post by: MegaMav on November 10, 2006, 06:42:48 PM
i find that hard to believe.
where did you get 95% from?
i have a 3.9 ounce top weight ball with the cg about 2 inches over and 2 inches down from grip center, if i make an x-hole in the thumb quandrant 1" x 2.5" on a line through the CG to the grip center then there is a good chance that this ball will make it back under 1 ounce side and thumb?
Post by: Greg T on November 10, 2006, 07:17:35 PM
quote:
anywhere on that line from grip center to VAL through the CG?
i find that hard to believe.
where did you get 95% from?
i have a 3.9 ounce top weight ball with the cg about 2 inches over and 2 inches down from grip center, if i make an x-hole in the thumb quandrant 1" x 2.5" on a line through the CG to the grip center then there is a good chance that this ball will make it back under 1 ounce side and thumb?
Obviously your scenario would not fall within the 95%. And I am ssuming that there wil be a flood of such posts coming soon. The idea is not to sit there and think of scenarios that would not meet the criteria, but to think of all the balls out there that use standard layout methods. This was published a few years back by Mo.
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Post by: JohnP on November 10, 2006, 07:20:37 PM
Post by: MegaMav on November 10, 2006, 07:59:53 PM
quote:
The idea is not to sit there and think of scenarios that would not meet the criteria
no kidding, its a realistic situation, in fact, im going to drill an illegal ball due to the offset placement of the CG on an asymmetric ball.
Post by: JohnP on November 10, 2006, 08:28:59 PM
Post by: MegaMav on November 10, 2006, 08:36:48 PM
Post by: Greg T on November 10, 2006, 10:00:26 PM
quote:quote:
The idea is not to sit there and think of scenarios that would not meet the criteria
no kidding, its a realistic situation, in fact, im going to drill an illegal ball due to the offset placement of the CG on an asymmetric ball.
But, if you pitch the hole towards the fingers and away from the palm it would probably work. Just as the instructions say.
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Post by: MegaMav on November 11, 2006, 09:33:53 AM
if i pitched the x-hole towards the center of grip, it would be angled through the CG, is that the message you're trying to convey?
Post by: JohnP on November 11, 2006, 08:09:00 PM
Edited on 11/12/2006 3:30 PM
Post by: MegaMav on November 11, 2006, 10:56:59 PM
ill get a picture up soon, for all to see the puzzle.
i can get my ball driller to verify, but he can be a real scrooge when it comes to doing a little extra work, and i wish i could get a new driller, but hes the best in the area.
i deal with the attitude for great work.
Post by: MegaMav on November 12, 2006, 10:01:16 PM
http://members.fortunecity.com/megamav/bowling/html/impulse.htm
lets hear it!
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Post by: lane1convert on November 12, 2006, 11:54:58 PM
quote:
i just put the picture up, of the impulse zone.
http://members.fortunecity.com/megamav/bowling/html/impulse.htm
lets hear it!
I believe you will have some options with that ball. Not to hijack your post, but how would you feel with a ball that has these specs: http://www.putfile.com/pic.php?img=3965338 lol (Pick me, cuz I do!)
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Post by: MegaMav on November 13, 2006, 08:44:52 AM
what do you expect.
depends how much the top weight is, could rico it with deep finger holes.
Post by: stormed1 on November 13, 2006, 09:01:01 AM
Post by: Greg T on November 13, 2006, 02:49:43 PM
quote:
The other reason to pitch the weight hole is to avoid the core. I was told by A ball rep to pitch the balance hole 1 1/2 inch right to miss the core and retain the cores dynamics. As you drikk into the core you change it's shape and thereby it's dynamics by changing RG and diff figures
This is true if you are only interested in getting back to legal statics. However, drilling the core is a viable way to tune the ball reaction.
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Post by: MegaMav on November 13, 2006, 03:06:31 PM
http://members.fortunecity.com/megamav/bowling/html/impulse.htm
Post by: Greg T on November 13, 2006, 03:24:30 PM
quote:
how about a verdict on the link i posted last night?
http://members.fortunecity.com/megamav/bowling/html/impulse.htm
What are you looking for? A specific ball reaction or just getting back to legal?
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Post by: MegaMav on November 13, 2006, 03:47:33 PM
3.9 Top Weight
Dad loves this layout, and helps him out with his lack of revs.
when i took it out of the box, i knew it would be a project to make it legal with a leverage layout, without making the MB negative.
Post by: Greg T on November 13, 2006, 08:09:47 PM
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Post by: MegaMav on November 13, 2006, 10:44:48 PM
so you're saying close to PAP (5" Over for him) & x-hole pitched towards CG?
Edited on 11/13/2006 11:37 PM
Post by: Greg T on November 14, 2006, 09:04:54 AM
I would say yes. Pitch the hole down, away from the palm, and back towards the thumb.
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Post by: JohnP on November 14, 2006, 10:05:08 AM
Post by: MegaMav on November 14, 2006, 10:47:59 AM
Post by: T-GOD on November 14, 2006, 01:48:49 PM
You will probably have to remove 1 1/2 - 2oz. of side weight. With the hole in the poace you've marked, you will add roughly the same finger weight. You probably have 3/4 thumb to start before the hole.
I would move the hole up an inch to 1 1/2" from where you have it marked and also move it to the right an inch, so as not to remove as much top weight. It's best to end with a 3/2 ratio top to side for the best leverage weight reactiion. Good lulck. =:^D
Post by: MegaMav on November 18, 2006, 08:36:01 PM
is this what you had in mind?
you can faintly see the old hole markings...
http://megamav.fortunecity.com/bowling/html/impulse.htm
pitch the hole toward the CG?
Post by: Greg T on November 18, 2006, 09:23:01 PM
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