Author Topic: Reaction of a re-plug and 2nd drill ball (Read 13626 times)

newbie79 · « **on:** May 18, 2015, 10:36:36 AM »

I want to get another ball for heavy lane condition. Thinking of getting a 2nd hand ball. I understand that the layout may be restricted if it 'clashes' with the previous finger holes. Another question is does the ball loose any of its original reaction after being replug?
Thanks.

dR3w · « **Reply #1 on:** May 18, 2015, 11:58:02 AM »

My two cents. First, there was an article on Bowling This Month that basically says that balls that are plugged and redrilled have very little effect on core dynamics. I'm sure this is slightly subjective to where the holes are, and how deep but I would say in general the core isn't changed much.

If you track or flare over the plug holes, there might be a small effect. The plugs are typically a urethane type of material, so I wouldn't think you would be able to observe much of a difference.

So overall I think as long as the ball is not oil soaked, you will get a similar reaction to a slightly used ball.

cheech · « **Reply #2 on:** May 19, 2015, 10:44:11 AM »

in my experience, the plug and redrill doesnt have an effect on the ball motion really at all. the amount of wear on the ball has more of an effect. obviously a ball with 150 games plugged and redrilled with not react the same as a ball with 5 games plugged and redrilled. although like said above if the 1st drill drilled the fingers super deep or something that could affect core dynamics.

bcw1969 · « **Reply #3 on:** May 19, 2015, 03:11:32 PM »

I had bought a ball from my proshop..it was a Visionary Gladiator Pearl..I already had the LE and the ball was drilled twice already ..once for a righty and once for a lefty..I bought it because it was there and because it was cheaper by a bit than what those were selling for at the time....I had it drilled differently than the other lefty that had it.....the ball rolled terrible and the reaction was very inconsistent....I do not have the ball anymore...junked it. Just my experience anyway

Brad

cheech · « **Reply #4 on:** May 19, 2015, 03:37:40 PM »

i tend to stay away from second drills. thats just too much for me. maybe thats an arbitrary conclusion but until i see something that says otherwise i will keep doing this

kidlost2000 · « **Reply #5 on:** May 19, 2015, 04:10:32 PM »

I avoid them, if I were going to buy one it would be a ball that I only plan on adjusting the fingers or thumb slightly to fit my span.

Not something to fully plug and drill completely different.

Strapper_Squared · « **Reply #6 on:** May 19, 2015, 07:25:43 PM »

I'm generally OK with one full plug and a red rule on a ball. Maybe it's just me, but if I get more than 1 full plug, I swear they roll poorly. With that being said, I bowled with a guy who had at least 2 full plug jobs on every balk he owned, and just killed it.

Jorge300 · « **Reply #7 on:** May 20, 2015, 11:15:07 AM »

I will state first thing, this is JMHO and I have no data to back this up:

I think it depends on the drillings used previously. On slightly older balls, every hole going into it will effect the core, some slightly, some more. If drill #2 was significantly different than drill #1, you now have changed the core dynamics, even if it is only slightly, 2 different ways. Now if you plug and redrill it a 3rd way, totally different from drill #1 and drill #2, now you have again changed the core dynamics a 3rd way. Even if all are just slight changes, I can't see how a ball will roll true having the core dynamics changes 3 different ways. I don't think that is something any manufacturer could predict or would take the time/energy/resources to model. If all 3 drillings are relatively close, I would think you might be ok, but it is still probably a crapshoot as to whether the ball will roll true or not.

As far as rolling over the plugs, I was always told to try and drill a ball to avoid that. While the new plug material may be urethane, it won't match the cover of the ball, in most cases, and you would have a small area where the ball will not have the same traction as the rest. In the overall scheme of things, it may not make a difference, but if you a buying a ball to use on heavy oil, for example, that one spot may make a difference. It would be like trying to drive in snow with a bald spot on every tire.

dR3w · « **Reply #8 on:** May 20, 2015, 11:29:42 AM »

Quote from: Jorge300 on May 20, 2015, 11:15:07 AM

I will state first thing, this is JMHO and I have no data to back this up:

I think it depends on the drillings used previously. On slightly older balls, every hole going into it will effect the core, some slightly, some more. If drill #2 was significantly different than drill #1, you now have changed the core dynamics, even if it is only slightly, 2 different ways. Now if you plug and redrill it a 3rd way, totally different from drill #1 and drill #2, now you have again changed the core dynamics a 3rd way. Even if all are just slight changes, I can't see how a ball will roll true having the core dynamics changes 3 different ways. I don't think that is something any manufacturer could predict or would take the time/energy/resources to model. If all 3 drillings are relatively close, I would think you might be ok, but it is still probably a crapshoot as to whether the ball will roll true or not.

As far as rolling over the plugs, I was always told to try and drill a ball to avoid that. While the new plug material may be urethane, it won't match the cover of the ball, in most cases, and you would have a small area where the ball will not have the same traction as the rest. In the overall scheme of things, it may not make a difference, but if you a buying a ball to use on heavy oil, for example, that one spot may make a difference. It would be like trying to drive in snow with a bald spot on every tire.

If you subscribe to bowling this month, look for the article "The Effect of Plugging and Redrilling on Bowling Ball Mass Properties"

To paraphrase the important aspects (in my opinion).

1. Large Core (hypothetical)
2. 5 plugs and redrills.
3. Min RG change .013
4. Max RG change .01
5. Int Diff Change .002
6. Total Diff Change .003
7. Weight Change .2 lbs

In the resulting simulation of ball motion, the difference in total hook was 1".

They drilled into the core in every instance. Finger holes are 31/32 dia and 2" deep. Thumb holes are 1-1/4 dia, 3 inches deep.

Yes, there are caveats that people can draw from this test. Holes could be deeper, core is fictional (but exaggerated to provide more difference with each drill), I'm not sure how the cover material is factored into the friction of the cover, and they are using software to simulate ball motion.

But all-in-all, a severe number of redrills barely changed the ball characteristic motion.

Even if there are exceptions to the criteria used in this example, in general I think it says that plugged balls are pretty similar to the original.

todvan · « **Reply #9 on:** May 20, 2015, 07:08:38 PM »

Being a lefty, I tried a plug and re-drill ball from a righty ( 2 different righty layouts - mine was the third drilling), and did not like the reaction. While this may be due to other reasons, this might be the worst case since the core weight that was lost to the first 2 drillings was on the opposite side of the core.

If I do a plug and re-drill again it will be a ball from another lefty.

Author Topic: Reaction of a re-plug and 2nd drill ball (Read 13626 times)

newbie79

Reaction of a re-plug and 2nd drill ball

dR3w

Re: Reaction of a re-plug and 2nd drill ball

cheech

Re: Reaction of a re-plug and 2nd drill ball

bcw1969

Re: Reaction of a re-plug and 2nd drill ball

cheech

Re: Reaction of a re-plug and 2nd drill ball

kidlost2000

Re: Reaction of a re-plug and 2nd drill ball

Strapper_Squared

Re: Reaction of a re-plug and 2nd drill ball

Jorge300

Re: Reaction of a re-plug and 2nd drill ball

dR3w

Re: Reaction of a re-plug and 2nd drill ball

todvan

Re: Reaction of a re-plug and 2nd drill ball