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Author Topic: Increasing Differential - Flare on Bowlingball  (Read 12188 times)

Brickguy221

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Increasing Differential - Flare on Bowlingball
« on: February 24, 2015, 03:17:31 PM »
To increase the Differential - Flare on a bowling ball, where is the best place to drill the weight hole as well as what size, how deep, direction of hole, etc?

Also on this same ball, in order to maximize the flare, should the Pin to PAP be 3 3/8 to 3 1/2 ?

And if so, will the weight hole increase the flare further?
« Last Edit: February 24, 2015, 03:24:19 PM by Brickguy221 »
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dR3w

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Re: Increasing Differential - Flare on Bowlingball
« Reply #1 on: February 24, 2015, 04:27:46 PM »
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Brickguy221

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Re: Increasing Differential - Flare on Bowlingball
« Reply #2 on: February 24, 2015, 05:26:28 PM »
Quote from: dR3w on February 24, 2015, 04:27:46 PM
http://wiki.bowlingchat.net/wiki/images/c/c6/GradientLine.pdf

or

https://www.youtube.com/watch?v=c93ZRsWbF7U


I just now read in another tread about a hole to increase the back-end on a ball and JustRico said Go 6.75" from the pin and 3.375" from your pap

Would this be the same thing as the P4 hole in the Bowling Chat link posted above?

I am not the smartest tool in the shed when it comes to drilling and trying to understand charts like the link above shows. I was hoping someone could simplify an answer like JustRico did in the other tread.
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dR3w

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Re: Increasing Differential - Flare on Bowlingball
« Reply #3 on: February 24, 2015, 05:45:55 PM »
In my opinion and others may differ, you would drill out the Mass Bias with the largest legal hole you can drill (1-3/8 I think).  That with a 3 3/8 pin to pap drilling on a symmetric ball.  I have heard arguments that on an asymmetric ball that flare can be increased by going further than 3-3/8 ... but there are others that disagree with those statements.  I am not going to get in the middle of that argument. 

Of course doing this may make the ball illegal, so someone who knows what they are doing needs to make sure you have legal static weights when done.

Additionally, Mo has a layout called the double thumb layout which is considered the highest flaring layout possible ... at least that I know of.

Other arguments state that increasing the differential beyond the legal 0.06 limit has very little effect on the hook potential of the ball.  Sort of like diminishing returns. 

In Brunsnick's video the largest flare increasing hole isn't on the gradient line, but basically perpendicular to the gradient line (unless you have an unusual PAP).  The P4 hole would be closer to the 2 -1/4 down the VAL line drilling in the video.

So like I say opinions vary.  Probably not the answer you are looking for.  I think either the P4 hole or the 6 3/4 hole would give you a large amount of flare, even if it technically isn't the largest possible. 

Either way you want the biggest hole that is deep, because you want to take out part of the core.  Essentially changing the shape of the core to a taller skinnier shape.

I'm sure someone will correct me if they disagree.
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JustRico

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Re: Increasing Differential - Flare on Bowlingball
« Reply #4 on: February 24, 2015, 09:28:04 PM »
First and foremost is the amount of flare created by pin to pap distance...and keep in mind, more flare is not always good as too much creates instability or over-flaring
Wright holes and mass bias positions only effect existing flare created by pin to pap distance
The strongest position for a weight hole on a symmetrical core ball is 6.75" from the primary pin or low RG axis and 3.375" from pap
On a asymmetrical core ball, defendant on existing drilled flare and how mass boss is created, a weight hole in the mass bias will increase diff or flare
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Brickguy221

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Re: Increasing Differential - Flare on Bowlingball
« Reply #5 on: February 24, 2015, 11:09:56 PM »
Rick, I am looking at a symmetrical ball with a low Differential of .023 and 3" of flare in a 13# ball. I do better with balls with differentials in the area of .045 or a bit less to .055. ... So the reason for my question is to see if I can raise the Differential and flare on this low Differental - low flare ball and how much.

Would that 6.75" x 3 3.75" wt hole get me close to .045 differential or a bit less maybe?
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JustRico

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Re: Increasing Differential - Flare on Bowlingball
« Reply #6 on: February 24, 2015, 11:19:33 PM »
Where's the pin to pap?
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JustRico

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Re: Increasing Differential - Flare on Bowlingball
« Reply #7 on: February 24, 2015, 11:20:02 PM »
Or why are using this ball if it's not really what you want diff wise?
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Brickguy221

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Re: Increasing Differential - Flare on Bowlingball
« Reply #8 on: February 25, 2015, 12:09:43 AM »
I am wanting to "maybe" buy it to fill a hole in my arsenal if the differential & flare can be raised as well as square up and move outside a bit when the condition calls for it, depending on how much the Differential & flare can be raised. It's length-hook-backend ratings  are good nos for me.
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JustRico

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Re: Increasing Differential - Flare on Bowlingball
« Reply #9 on: February 25, 2015, 12:22:21 AM »
Is it new?
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Brickguy221

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Re: Increasing Differential - Flare on Bowlingball
« Reply #10 on: February 25, 2015, 11:04:26 AM »
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JustRico

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Re: Increasing Differential - Flare on Bowlingball
« Reply #11 on: February 25, 2015, 11:09:13 AM »
I would lay it out with a similar favorite layout and throw it first befor adding a weight hole to adjust reaction...
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Brickguy221

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Re: Increasing Differential - Flare on Bowlingball
« Reply #12 on: February 25, 2015, 11:29:07 AM »
Quote from: JustRico on February 25, 2015, 11:09:13 AM
I would lay it out with a similar favorite layout and throw it first befor adding a weight hole to adjust reaction...

Rick, in order to get the most differental - flare, should I place Pin 3.375 - 3.5 inches from PAP to start? My PAP is 4 x 1/4 up. I was given a suggestion of 45 x 4 x 45 with wt hole 2" down the VAL
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JustRico

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Re: Increasing Differential - Flare on Bowlingball
« Reply #13 on: February 25, 2015, 01:05:00 PM »
Worry less abt the flare and more abt what you want the ball to do...if you wanting play and down & in shot I would do weird a 4-4.25" pin to pap and then throw it...if you need more reaction either adjust surface and/or add a adjusting weight hole
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tommygn

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Re: Increasing Differential - Flare on Bowlingball
« Reply #14 on: February 26, 2015, 08:11:12 AM »
Quote from: dR3w on February 24, 2015, 05:45:55 PM
In my opinion and others may differ, you would drill out the Mass Bias with the largest legal hole you can drill (1-3/8 I think).  That with a 3 3/8 pin to pap drilling on a symmetric ball.  I have heard arguments that on an asymmetric ball that flare can be increased by going further than 3-3/8 ... but there are others that disagree with those statements.

Maximum allowed size for a balance hole is 1 1/4".
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