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Author Topic: Negative drilling  (Read 10905 times)

powercoil18

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Negative drilling
« on: January 18, 2010, 03:38:00 PM »
Looking to drill a bowling ball negatively. I'm a RH that like to play straight down and in. However, flatter oil patterns leave me with terrible carry with this line. Does anyone have a suggestion. I'm thing an aggressive ball drilled weakly with a 0-1 pin and negative; pin and cg to the left of grip center will help me a lot.
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kidlost2000

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Re: Negative drilling
« Reply #1 on: January 19, 2010, 02:44:42 AM »
An aggressive ball drilled with the pin negative for me is still very aggressive. My pap is 5.5" straight across. Most bowlers with hand find that balls drilled this way are very clean through the front and depending on the ball go left very very strong on the backend.

So depending on your style it may not be what your looking for.
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…… you can't  add a physics term to a bowling term and expect it to mean something.

JohnP

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Re: Negative drilling
« Reply #2 on: January 19, 2010, 09:08:06 AM »
How do you define negative?  If you have a low track, say PAP of 4" over and 1" up a layout with the pin to the left of the MF hole (for right handers) is going to be quite strong.  So "negative" really means absolutely nothing.  Talk in terms of pin to PAP distance.  --  JohnP
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powercoil18

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Re: Negative drilling
« Reply #3 on: January 19, 2010, 06:08:12 PM »
My PAP is 4.5 inches over the 0.5 up. I have medium revs 12-14 mph on speed. I like to stay underneath the ball at release. I have been told I''m a tweener and have a lot of forward roll. This is why I think I do the best on longer oil patterns like the shark and scorpion. I don''t have a lot of projection of the ball at the foul line. I lay it down early (almost doesn''t make a sound).

The flat oil patterns give me problems with clearing the heads. If seems I have a good look for about two games then it breaks down and players destroy the very little hold in the front. Everything I own hooks early at about the 20-30 foot mark (rolling out). My ball hits like it weights 5 lbs. I have tried polishing with the extended polish, however, this doesn''t seem to give me the length I need down lanes.

I need to be able to get the ball to the breakpoint. Especially when moving in around third arrow.

Edited on 1/19/2010 7:09 PM
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kidlost2000

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Re: Negative drilling
« Reply #4 on: January 19, 2010, 06:12:06 PM »
I would say 6" plus from PAP for negative drilling.
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" men lie, women lie, numbers don't "
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…… you can't  add a physics term to a bowling term and expect it to mean something.

JohnP

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Re: Negative drilling
« Reply #5 on: January 20, 2010, 03:59:36 PM »
Why don't you try a weaker ball for the later game(s)?  Maybe one of the new urethane balls with dynamic cores?  --  JohnP
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handy zone

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Re: Negative drilling
« Reply #6 on: January 20, 2010, 08:19:37 PM »
Well said Big Ragu. An example of this was last Sundays Earl Anthonys open when Mike Machuga played the lanes that way.
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powercoil18

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Re: Negative drilling
« Reply #7 on: January 20, 2010, 10:12:07 PM »
THanks for the suggestions. I had a Ebonite NVD (drilled stacked) and an Ebonite NVS (cg leverage) both polished. I was unable to keep either clean through the front without overhooking. I tried staying even more underneath and the ball finished flat.

I appreciate the suggestions. I have been stratching my hair out on this one trying to figure out a solution.

What kind of drilling would you suggest?
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Mike Austin

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Re: Negative drilling
« Reply #8 on: January 21, 2010, 05:16:43 PM »
My PAP is very similar to powercoil18, so I have some reference here.  4 1/2 by 3/4 up.

With that PAP you shouldn't have much trouble getting the ball down the lane, tweener yes, rolly?? Not really to me.

If you use a ball with too long of a pin to PAP it can store energy and jump off the back of the pattern.  I have a Fury Pearl 5.5 to PAP but with a pin out and cg is about 70 degrees, big hole low.  Gets good length, but very mellow down the lane.  Love this ball.  The farther right I'm playing the better.  The pin is below/left of my middle finger.

I have had good success with pin in balls drilled "stacked" under my middle finger or even slightly left of there.  No hole.  Usually solids better than pearls, and not super shiny, even like 2000 no polish.  Usually pretty smooth.  Purple Thunderstruck was awesome, Radical Inferno was great too.

Targeting down the lane may help you too, better projection, help to keep the ball "on line" even with not great shots.  You will tend to float the ball through the front and not screw it into the lane, with your soft speed, this should help also.
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Slick300

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Re: Negative drilling
« Reply #9 on: January 21, 2010, 05:26:05 PM »
5-1/2 x 4 with a long pin assymetrical ball with the pin 1 to 1- 1/2 inch pin buffer and then play with the surface till you get the right read. Drill the thumb deep so you do not use a hole.
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Ray Lathrop
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Raymond Lathrop
Better Bowling Concepts
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