Search found 548 matches

by MathIsTruth
January 14th, 2023, 10:28 pm
Forum: Ball Talk
Topic: Katana Assault
Replies: 2
Views: 371

Re: Katana Assault

Well sure, why not? You have to use what best suits your game. Thanks for supporting Brunswick!!
by MathIsTruth
January 14th, 2023, 8:27 pm
Forum: Ball Talk
Topic: Katana Assault
Replies: 2
Views: 371

Katana Assault

Hello all, it's been a few minutes since my last visit. I needed to research a few things from the past and visit the wiki. I hope all is well!! Forgive my shameless plug for a new ball coming out soon that I designed for Radical. I am very excited about this release and we have several new Radical ...
by MathIsTruth
March 26th, 2021, 5:45 pm
Forum: Ball Talk
Topic: Sym vs Asym
Replies: 51
Views: 12517

Re: Sym vs Asym

The polarity of a weight block, core design, has a lot of influence too. We have said numerous times that core shape matters and it couldn’t be stated enough so I appreciate your post. The geometric shape has everything to do with the amount of gyroscopic potential that can be achieved with a bowli...
by MathIsTruth
March 26th, 2021, 5:33 pm
Forum: Ball Talk
Topic: Sym vs Asym
Replies: 51
Views: 12517

Re: Sym vs Asym

Because of the PSA, the Mass Bias strength. The stronger it is the greater the gyroscopic effect and how it influences Tilt. I shouldn't have said, "does not exist with Symmetricals" , but rather is very weak in Symmetrical balls. I would like to add that the strength of the Int RG axis a...
by MathIsTruth
March 14th, 2021, 4:04 am
Forum: Layout Advice
Topic: Mo's new layouts
Replies: 15
Views: 3625

Re: Mo's new layouts

Mo’s intention for the new layouts was to make it easier for people who may not have the knowledge base or understanding as many of the people on this forum. He always had the goal of making bowling more fun for more people. A common part of my work for Mo was to virtually drill bowling balls to det...
by MathIsTruth
September 18th, 2017, 12:13 am
Forum: Layout Advice
Topic: Xeno Full Roller Layout P1
Replies: 18
Views: 4301

Re: Xeno Full Roller Layout P1

Well, I owe Dustin another public apology for not getting this done after I said I would.... I have been working on this project and wanted to share some results. I am not finished but wanted to share something. I placed balance holes left of the pin/thumb and another in the PSA for a comparison. I...
by MathIsTruth
September 15th, 2017, 2:36 am
Forum: General Discussion
Topic: New Determinator Videos from Mo
Replies: 7
Views: 2852

Re: New Determinator Videos from Mo

Great videos and glad you are combating all the fallacious information out there. In the last video, I wanted to point out to everyone that it was a coincidence for the PSA to coincide with the endpoint of the line from pin through CG... If the balance hole was smaller, the PSA would not have shift...
by MathIsTruth
February 26th, 2017, 4:07 pm
Forum: Layout Advice
Topic: Xeno Full Roller Layout P1
Replies: 18
Views: 4301

Re: Xeno Full Roller Layout P1

First of all, my sincerest apologies to Dustin for not replying earlier than now. I am going to model the layout in Solidworks and place a few different balance holes to see how the mass properties change. Could you post a picture of the Xeno please? Do you remember the pin distance that you used? ...
by MathIsTruth
December 17th, 2016, 10:32 pm
Forum: Ball Talk
Topic: Cores 14-16 lb balls
Replies: 3
Views: 1098

Re: Cores 14-16 lb balls

I have been told that although the shape and size cores are the same in balls 14-16, they actually don't weigh the same. Is that true, any explanation would be greatly appreciated. The density of the core is changed to attain the various weight of balls. So yes the cores are generally the same size...
by MathIsTruth
December 15th, 2016, 12:59 am
Forum: Layout Advice
Topic: Hole on PAP
Replies: 18
Views: 3429

Re: Hole on PAP

AJCZAR wrote:
So basically, if the PSA is closer to the Negative Axis than the Positive Axis, than a hole in the PAP could actually push the PSA further away and increase the drill angle? Am I understanding that correctly?
Yes sir. That is correct.
by MathIsTruth
December 14th, 2016, 6:31 pm
Forum: Layout Advice
Topic: Hole on PAP
Replies: 18
Views: 3429

Re: Hole on PAP

I think you need to consider the distance of the PSA (after drilling, but before balance hole) when saying if the hole on the PAP will reduce, or increase the drill angle. For example, assuming the bowler is right handed, if you drill a hole 1" to the right of the thumb hole, you will reduce t...
by MathIsTruth
November 30th, 2016, 2:01 am
Forum: Layout Advice
Topic: "weak" ball and "strong" ball
Replies: 56
Views: 10672

Re: "weak" ball and "strong" ball

Comments in yellow. Have you used a determinator? This theoretical stuff is fun and all, RG contours, PAP migration paths, but it doesnt affect how I tune a bowling ball for a bowler. I have no real control over how those things occur, but I can affect core shape to get the bowler what they want. T...
by MathIsTruth
June 21st, 2015, 3:47 pm
Forum: General Bowling
Topic: pin over ....pin under
Replies: 16
Views: 3161

Re: pin over ....pin under

Radical's "Finger Scoop" and the Storm's "Thumb Cavity" are pretty much opposites. The scoop cores are designed to either penetrate, or not penetrate, the core in specific areas based on the chosen layout after drilling. This allows for versatile drilling options and different w...
by MathIsTruth
February 28th, 2015, 3:22 pm
Forum: General Discussion
Topic: Interesting Find Today On The Determinator
Replies: 12
Views: 2996

Re: Interesting Find Today On The Determinator

Matty, how big/deep is your thumbhole? It's a higher diff ball, which means it should be more difficult to move the PSA off the equator. edit - and what weight is the ball? Urethane or vinyl slug? Because the pin is so stable and will not shift as much, the PSA will generally stay close to the orig...
by MathIsTruth
February 28th, 2015, 6:51 am
Forum: General Discussion
Topic: Interesting Find Today On The Determinator
Replies: 12
Views: 2996

Re: Interesting Find Today On The Determinator

I'd say most of the time when I spin up a symmetrical ball the psa ends up in my thumb hole. Usually it's even on the left side of my slug. Today we drilled a Moxie pin in ring with cg kicked right for a potential hole to be added. The ball post drill had the psa spin up a good 5/8 LEFT and 1/2&quo...
by MathIsTruth
January 20th, 2015, 4:28 pm
Forum: General Discussion
Topic: Question for Steve (MathIsTruth)
Replies: 2
Views: 1396

Re: Question for Steve (MathIsTruth)

Steve, How big a hole (approximately) would be needed into the pin to drill a 0.05" diff symmetric ball back to 0 diff? Is it even possible to do so? I know it will depend on core geometry, just looking for a ballpark estimate as to how much the diffs can be reduced. TIA, Robbie. Robbie, Sorry...
by MathIsTruth
March 14th, 2014, 2:53 am
Forum: The Pro Shop
Topic: RG Values
Replies: 14
Views: 3638

Re: RG Values

M4R10, Good to hear from you again! It has been a while. I look forward to thinking about your hypothesis and Excel spreadsheet in a couple days. I will say that traveling around the ball will create a sinusoidal model. I have always used a cubic equation from Low RG to equator because it is easier...
by MathIsTruth
February 27th, 2014, 6:43 pm
Forum: Layout Advice
Topic: ReAx V2 question
Replies: 6
Views: 1339

Re: ReAx V2 question


JohnP, there is no reason why you cant DT the ReaX V2. Good luck and hope he likes it.

by MathIsTruth
February 26th, 2014, 8:59 pm
Forum: General Discussion
Topic: Yeti Unleashed
Replies: 4
Views: 1516

Re: Yeti Unleashed



Thanks Gregg!! Those last two segments showing the ball through the pins were awesome!

by MathIsTruth
February 24th, 2014, 3:50 am
Forum: General Discussion
Topic: Motiion Hole on pancake cores vs PBA plastic ball layout
Replies: 7
Views: 3356

Re: Motiion Hole on pancake cores vs PBA plastic ball layout

I have a question about removing the extra weight. what would the change in reaction be if you removed extra weight drilling the fingers deeper vs the weight hole on the VAL. That is assuming that it is possible that drilling the fingers deeper would be able to remove the extra weight. is there any...