BallReviews
General Category => Drilling & Layouts => Topic started by: pjr300 on December 07, 2003, 03:33:36 AM
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I did a CATS analysis a few months ago, and just the other night I was re-reading the data sheet. I noticed my axis tilt data for the first time, and was shocked to find it at 90*. It's somewhat strange, because I have a pretty high track and a heavy roll.
Anyway, I generally have been throwing stacked leverage layouts, but recently drilled two balls with the pin at 2 1/4" from the PAP and the CG in the center of grip. These balls have a very smooth and controllable back end, and have worked well for me.
Last night I was cleaning some bowling files and came across a drill sheet from an old Columbia ball (Cuda 2000 I believe). They had layouts for 90* axis, and basically show moving the pin about 1" closer to the PAP for the 90* drills. In esence that's what I did with these two balls that have been working for me!
Anyhow, my question is: does anyone have any experience on drilling for high axis, high track bowlers?
A few other details: Revs rate about 260, speed 16, average 210 to 215 on conditions from a heavy oil flat shot to Sahara dry. Pretty damn accurate. On the CATS test. I was within 1/10 of a board on 80% of my shots.
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pjr
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Are you saying axis rotation??? Or axis tilt?
I'm pretty sure you are saying rotation.
Well I always thought the old Columbia sheets with their 0, 45, and then 90 degree sheets were great because they show a progression that is logical.
0 degree axis rotation bowlers get the ball started early, 45 are ideal and 90 degree bowlers seem to have a sharp breakpoint way down the lane.
Columbia would show ways to adjust the breakpoint earlier for a 90 degree bowler. Stronger pins, cg's moved towards the pap, or cgs moved down below the grip center line. All techniques to get a ball moving earlier for the high axis rotation bowler.
I recently put a post about some pin out drillings with my cg down that are working well for me here in the drilling section, another high axis rotation bowler,(however like you I think, I have a very high track and very little axis tilt!).
REgards,
Luckylefty
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Yep, that's what I mean!
The Columbia sheet illustrates moving the pin closer to the PAP for 90* bowlers. It was very coincidental that I drilled up a few balls this way -- not due to the rotation issue, but based on Denny Torgesun's 105* layout that he often speaks about in BTM.
Last night I read your post about dropping the CG below the midline... sounds like that could possibly be another tool to add to the kit! Good post!
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pjr
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Pjr, are you positive, because having 90 degrees of axis tilt usually equate to having a small track circumference, this is real asian spin type of roll.
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That's what the CTS machine said. But no, my track is maybe an inch or two to the left of my middle finger. No Asian helicopter track for sure!
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pjr