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Author Topic: In general......  (Read 1607 times)

northface28

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In general......
« on: June 16, 2006, 10:47:37 AM »
What type of reaction do stacked drillings yield? Futhermore lets say you stack the pin and mb on a ball with a marked mb, what type of reaction would you get? Finally any variances in pin up or down stacked drillings? Say pin under bridge with cg stacked versus pin over ring with cg stacked? Reason why I ask is because most of the better bowlers in my area scoff at stacked drills and some of the better proshops around here think its silly to drill the balls of today stacked for anyone with a somewhat moderately strong release. Thoughts?
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DP3

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Re: In general......
« Reply #1 on: June 16, 2006, 11:56:13 PM »
From what I see 90% or more of the time with stacked leverage drills is a ton of early flare and burn off in the backend.  Most of the hook and reaction comes before the ball really gets to the 45-50 ft mark.  In strong balls with most players on a THS, if they're playing direct they'll be lined up out of the gate for big scores while they're fresh but IMO these drillings are useless as the lanes transition and more drastic moves need to be made either inside or outside.  I have "stacked" drilled ball at 600grit(a TPC Warrior) and it only sees action when I am trying to burn up something for myself on the lane, or when I absolutely can't get anything else into a roll.
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charlest

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Re: In general......
« Reply #2 on: June 17, 2006, 05:02:26 AM »
There are drillings with the Pin and the CG/MB stacked
AND then there are drillings with the Pin and the CG stacked at the leverage position.

The leverage position is with the pin at 3 3/8" from the bowler's PAP (axis point)  and generally has the maximum flare because the dynamcis of the core is at the maximum imbalance. When the CG/MB is stacked below, this casuses not only maximum flare but makes the reaction the strongest it can be. (This is NOT the earliest nor is it the most hockey-stick shaped.)

Yes, because balls are so strong these days, such a drilling is not recommended for most balls for most bowlers with a decent release.

Higher pins get more length and more snap BUT ONLY as compared to the exact same ball with a lower pin. You're still concerned with the distance of the pin from the PAP. Balls with the pin over the ring finger and the CG/MB stacked below (MB is the range of 4.5" from PAP), will go slightly longer than those with the pin below, but since the pin-PAP distance is longer, flare will be delayed and the flip will take place SLIGHTLY further down the lane.

All this is GENERAL THEORY. Pin placement is NEVER decided by distances from and relationships to the finger holes, BUT ALWAYS to the bowler's PAP.
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CoachJim

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Re: In general......
« Reply #3 on: June 17, 2006, 07:24:46 AM »
Many of the high rev players are going back to stacked leverage drills for control, being as they burn up so much energy in the front part of the lane and tend to be more mellow on the backend.

In drilling balls with a marked mass bias you have to check the drilling instructions before you drill to get the same or simmillar drill pattern. For instance MoRich balls to do a stacked leverage reaction, or "maximum flare drilling", on some of their gear you place the pin 2 to 2 1/2 inches from the pap and put the mass bias 5 1/4 from the pap on others it is the standard
3 3/8".

northface28

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Re: In general......
« Reply #4 on: June 19, 2006, 10:58:39 AM »
Thanks to all.
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