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Author Topic: Drilling through MB  (Read 2739 times)

J Dubs

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Drilling through MB
« on: October 05, 2006, 06:09:43 AM »
I drilled a Trifecta last night, 15lb 2 oz, 2.4 top weight.. 4¾ pin to PAP, pin high, 90 degrees with the Thumbhole through the RAD. No hole needed. I polished the ball as well to conserve even more energy. I am thinking maybe I shouldn't have drilled the thumb through the RAD, does anyone know if that will cause an adverse effect on my reaction.. i have read that drilling through the RAD can increase dynamics. This particular ball with this layout rolled well and was very smooth and even, but would say it was fairly weak. It also hit like a pillow from any angles.
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LuckyLefty

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Re: Drilling through MB
« Reply #1 on: October 05, 2006, 02:33:51 PM »
Ruined....
Just jokin

Actually...I hate to sound like Charlest but I find my particles hit like pillows if not enough oil.

I have two Deuces with the thumb drilled thru the RAD(MB) and both hit nothing like pillows.  Both sound like Barry Bonds getting around on one and contacting the meat of the bat!

REgards,

Lucklefty
PS Thumb thru RAD will reduce the reaction or flatten the entry angle slightly compared to mass bias strong!
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charlest

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Re: Drilling through MB
« Reply #2 on: October 05, 2006, 04:11:44 PM »
quote:
Ruined....
Just jokin

Actually...I hate to sound like Charlest but I find my particles hit like pillows if not enough oil.


"The truth shall make you free."
What's right is right; if he doesn't hear it from you, who will tell him?

quote:

I have two Deuces with the thumb drilled thru the RAD(MB) and both hit nothing like pillows.  Both sound like Barry Bonds getting around on one and contacting the meat of the bat!

REgards,

Lucklefty
PS Thumb thru RAD will reduce the reaction or flatten the entry angle slightly compared to mass bias strong!
--------------------
Open the door...see what's possible...and just walk right on through...that's how easy success feels..


AFAIHL,
Think what's happening when you put a large hole (most thumb holes are large) into the Mass Bias marker of the core. Basically you are removing the mass bias or intermediate differential. So, as far as I can see, you're reducing the amount of POTENTIAL backend from the ball. The ball still has its normal amount of flare as determined by the pin position and your release. The Trifecta is a strong ball without the MB; it's just stronger with it.

It could be you just don't have enough oil OR it's not drilled right for your release. Modification to the surface can help or saving it for heavier oil, IF THAT IS THE PROBLEM.
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LuckyLefty

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Re: Drilling through MB
« Reply #3 on: October 05, 2006, 04:22:00 PM »
Mine have reduced midlane and reduced entry angle.  Good for my center...no midlane oil so the high friction supplies the midlane while the drilling reduces it!  If you need midlane one must supply it with a strong mass bias setting!  Half way to the val...or more midlane and less backend...on the val.

REflective of what Dynothane calls Direct Cap drillings in their Critical Mass drill sheets is one that has the thumbhole almost on top of the RAD or vice versa or Rad in the track!

REgards,

Luckylefty
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Open the door...see what's possible...and just walk right on through...that's how easy success feels..
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It takes Courage to have Faith, and Faith to have Courage.

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charlest

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Re: Drilling through MB
« Reply #4 on: October 05, 2006, 05:07:50 PM »
quote:

REflective of what Dynothane calls Direct Cap drillings in their Critical Mass drill sheets is one that has the thumbhole almost on top of the RAD or vice versa or Rad in the track!

REgards,

Luckylefty
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Open the door...see what's possible...and just walk right on through...that's how easy success feels..


As with most MB markings, the important part is the distance from the PAP, not the physical location with respect to any holes.

For instance, for crankers with reverse tracks (PAP below the midline), a reasonable 5" MB - PAP position could have the MB on the track side of the thumbhole, BUT it will still be a strong MB position for that bowler.

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J Dubs

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Re: Drilling through MB
« Reply #5 on: October 06, 2006, 10:39:59 AM »
I used the ball again, last night, and it was 10 times better. I didn't really have a good idea of where to stand and how to release it the 1st time I tried it. Like you said, the Flare is definitely reduced, the lines are tight and not spread out very much. The ball just rolls really good right now. I also drilled a Trifecta with the same pin-to-PAP distance with a 40-degree RAD, on the VAL. This ball flares alot more, and hooks more than the one I drilled through the RAD with. I like the one that I drilled through the RAD with, because it was really smooth off the dry but still stored the energy really well and my pin carry was good. I also brought this ball up to 1000 grit and highly polished it to better store the energy and smooth out these wet-drys I am bowling league on... and it is working just as I had hoped. I just didn't realize drilling the thumb in the RAD would weaken the ball, but that is probably what I needed anyway. Thanks again.
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Crankenstein300

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Re: Drilling through MB
« Reply #6 on: October 06, 2006, 11:16:58 AM »
Straight from the Storm drill sheet: "Drilling extra hole or thumb hole into the RAD only enhances (their emphasis, not mine) the dynamics of the weight block." Meaning that if anything it will only help.
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charlest

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Re: Drilling through MB
« Reply #7 on: October 06, 2006, 11:41:32 AM »
quote:
Straight from the Storm drill sheet: "Drilling extra hole or thumb hole into the RAD only enhances (their emphasis, not mine) the dynamics of the weight block." Meaning that if anything it will only help.


I'd like to hear their explanation of why that is true, when it, more or less, removes the mass bias.
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J Dubs

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Re: Drilling through MB
« Reply #8 on: October 06, 2006, 02:20:46 PM »
I am familiar with that info from the drilling sheet about going through the RAD increasing the dynamics.. thats why I figured I would drill that layout. I thought that info was only for the RAD3 weight block used in the Paradigm and Passion. It didn't say that on the Trifecta sheets. If anything it seems the ball is flaring LESS from this drilling. It's like there are very, very tight flares, almost one oil strip on the ball about 3/8" thick.
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Stay Focused and Make the Shot

Buy your bowling equipment at Perfect Fit Pro Shop, Sports Plus Bowl  631 737 4837
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rmarth1983

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Re: Drilling through MB
« Reply #9 on: October 15, 2006, 12:22:15 PM »
I recently had a red zone drilled up this way and I must say I am suprised. I was thinking that it would reduce the backend and tame it down a bit. I think it has had the opposite effect, the ball seems to store an incredible amount of energy for the backend. It still has a real smooth midlane as would be expected from this ball, but it has a huge pop at the end as it revs up and flares.
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