Search found 347 matches

by The Kid
July 6th, 2011, 12:01 am
Forum: Layout Advice
Topic: PBA legal equivalent to Perpetual Motion
Replies: 4
Views: 264

PBA legal equivalent to Perpetual Motion

I have a card holder who loves his PM, but is going to start bowling regionals again this fall. What ball should he get to match his PM?

Layout is 65°x4 3/8"x30°
by The Kid
June 11th, 2011, 12:53 am
Forum: Layout Advice
Topic: Ball Roll and Axis tilt
Replies: 10
Views: 570

Re: Ball Roll and Axis tilt

I would double check that tilt. That PAP and tilt combination is possible but not common. Unless you very much trust your local guy.
by The Kid
June 8th, 2011, 12:53 am
Forum: General Discussion
Topic: Mo, Congrats on your marriage....
Replies: 21
Views: 1058

Re: Mo, Congrats on your marriage....

Congrats you two!

Pretty nuts with the timing setting as I'm getting married this saturday.
by The Kid
June 8th, 2011, 12:35 am
Forum: Layout Advice
Topic: Mo: Is this over-rolled?
Replies: 1
Views: 207

Mo: Is this over-rolled?

I have a bowler whose tilt has steadily become more and more negative. However, his PAP is still not further than 6 3/4". I know you've said that this is impossible, but I've measured more than once and verified with tape on his axis. His PAP measures 6" by 2". His tilt is -17°. I'll upload pictures...
by The Kid
April 27th, 2011, 5:15 am
Forum: General Bowling
Topic: Return of the Blue Hammer
Replies: 25
Views: 1766

Re: Return of the Blue Hammer

Brett Wolfe is going to be a happy camper.
by The Kid
April 20th, 2011, 7:28 pm
Forum: General Discussion
Topic: Mo - Riddle Me This? RG from Bowling This Month
Replies: 11
Views: 906

Re: Mo - Riddle Me This? RG from Bowling This Month

The issue is that the Gradient Line Balance Hole numbers were strict numbers: increases/decreases in the Total Differential (flare potential) and Intermediate Differential (length of hook zone). Pin-to-PAP distances are more about the stability of the PAP and less about hard numbers. Furthermore, Pi...
by The Kid
April 20th, 2011, 4:46 pm
Forum: General Discussion
Topic: Observations and Reality
Replies: 66
Views: 4559

Re: Observations and Reality

Here's my confusion: It would seem that a ball that changes it's axis of rotation more easily/faster would transition faster. However, the opposite seems to be true (according to Mo). Asymmetrical bowling balls have higher gyroscopic inertia, yet transition quicker. The more asymmetry present (highe...
by The Kid
April 20th, 2011, 4:41 pm
Forum: General Discussion
Topic: Mo - Riddle Me This? RG from Bowling This Month
Replies: 11
Views: 906

Re: Mo - Riddle Me This? RG from Bowling This Month

It would appear a longer pin to pap length does not impact the transition to hook. Because Pin-to-PAP distances directly affect the amount of flare for drilled bowling balls, it does impact the first transition (and I'd say significantly). Flare dictates how much fresh coverstock touches the lane o...
by The Kid
April 19th, 2011, 8:22 pm
Forum: General Discussion
Topic: Mo - Riddle Me This? RG from Bowling This Month
Replies: 11
Views: 906

Re: Mo - Riddle Me This? RG from Bowling This Month

The ball transitioning quicker for lower angle sums (and especially drilling angles) has to do with the PAP crossing the Pin-to-Spin line sooner. After crossing this line, the rotation accelerates. The RG of the PAP has more to do with Pin distance, but also the placement of the PSA and so on. Mo wi...
by The Kid
April 19th, 2011, 7:28 pm
Forum: General Discussion
Topic: Observations and Reality
Replies: 66
Views: 4559

Re: Observations and Reality

I'm sorry that I'm not referencing these quotes as I should (I'm just lazy). But, here you go: 1) Mo said this about circular vs. uncircular (straighter/greater eccentricity) migration paths (the path of the PAP on an RG contour): "FLATTER MIGRATION PATHS TEND TO INDICATE HIGHER DIFF. RATIOS, INDICA...
by The Kid
April 19th, 2011, 6:43 pm
Forum: General Bowling
Topic: Assymetrical core dynamics
Replies: 21
Views: 1051

Re: Assymetrical core dynamics

This is a picture from a Nick Siefers study on Core Dynamics. This is a ball with the top line of x's marking the PAP contour before the weight hole. The weight hole is then placed on the initial PAP, raising it's RG. The lower line of x's marks the new RG contour (this line is closer to the High RG...
by The Kid
April 18th, 2011, 4:12 am
Forum: General Bowling
Topic: Assymetrical core dynamics
Replies: 21
Views: 1051

Re: Assymetrical core dynamics

And I believe Steve said that if the RG of the initial PAP (which is the same as the other PAPs as well) was greater than the intermediate RG, the PAP would follow a contour around the High RG Axis. And if the RG of the initial PAP was less than the intermediate RG, then the PAP would follow a conto...
by The Kid
April 18th, 2011, 3:33 am
Forum: Ball Talk
Topic: 0.008 intermediate diff = assymetrical?
Replies: 17
Views: 1444

Re: 0.008 intermediate diff = assymetrical?

This. Is. Awesome.
by The Kid
April 14th, 2011, 6:40 pm
Forum: The Pro Shop
Topic: question about a ball driller
Replies: 14
Views: 871

Re: question about a ball driller

I suppose (to give a defense with no grounds), it is difficult for almost anyone to play on a fresh house shot with a breakpoint around 10-15 consistently.

House shots (typically) should be played outside 10 at the break.
by The Kid
April 14th, 2011, 6:34 pm
Forum: Ball Talk
Topic: 0.008 intermediate diff = assymetrical?
Replies: 17
Views: 1444

Re: 0.008 intermediate diff = assymetrical?

Mo Pinel wrote: If you're trying to create identical ball motion, YES! since higher diff. ratio balls transition faster.
Is this directly due to gyroscopic inertia?

Also, in what way is gyroscopic inertia linked to the Pin-to-Spin line, if at all?
by The Kid
April 14th, 2011, 6:31 pm
Forum: General Bowling
Topic: Assymetrical core dynamics
Replies: 21
Views: 1051

Re: Assymetrical core dynamics

With the Pin in the track, it is likely that the Pin-to-PAP was 5-6 1/2". That is unstable for an asymmetrical ball. The ball, however, would've had an extremely large angle sum with the PSA (mass bias) in the track also. I bet the reaction was extremely calm, but the Pin placement is actually stron...
by The Kid
April 13th, 2011, 7:33 pm
Forum: General Bowling
Topic: Assymetrical core dynamics
Replies: 21
Views: 1051

Re: Assymetrical core dynamics

Recently, I asked a very similar question here: http://forum.bowlingchat.net/viewtopic.php?f=15&t=2569 . More recently than that, I asked a follow up question (with an answer) here: http://forum.bowlingchat.net/viewtopic.php?f=6&t=2834 The condensed answer is that an asymmetrical ball only has one s...
by The Kid
April 13th, 2011, 7:18 pm
Forum: Ball Talk
Topic: 0.008 intermediate diff = assymetrical?
Replies: 17
Views: 1444

Re: 0.008 intermediate diff = assymetrical?

I think that about sums it up. My thought process follows this way: Post-drilled symmetricals have low intermediate differentials. Because of this (I assume), they have lower gyroscopic inertia. Therefore, we add 5* to the drilling angle and take 5* off the VAL angle to cause the ball to lose tilt l...
by The Kid
April 12th, 2011, 6:30 pm
Forum: Layout Advice
Topic: ball question about slingshot
Replies: 3
Views: 205

Re: ball question about slingshot

If you want to max it out, get a long pin and Double Thumb it. The Plastic Ball layout is to make pin-in balls drillable, but not to provide an alternative to the DT. Unless it's your only ball though, you probably don't need it to hook that much. We've had a lot of success in our shops drilling Sli...
by The Kid
April 12th, 2011, 6:17 pm
Forum: Ball Talk
Topic: 0.008 intermediate diff = assymetrical?
Replies: 17
Views: 1444

Re: 0.008 intermediate diff = assymetrical?

Cool stuff. One more: Seeing as we increase the drilling angle 5* and decrease the VAL angle 5* on a symmetrical ball from an asymmetrical layout due to lower gyroscopic inertia, should we decrease the drilling angle and increase the VAL angle to compensate for extreme asymmetry? i.e. Comparing a la...