Author Topic: Layout - how important? (Read 5321 times)

qstick777 · « **on:** January 14, 2005, 01:46:14 PM »

How important is the drilling layout - relative to the bowlers speed and revs?

I have an AMF Velocity that was drilled "stacked leverage" with a weight hole. Pin is about an inch above and to the right of my ring finger - not sure where the CG is on this ball. This ball does not move for me at all.

I won't pretend to know anything about layouts and my release, but I would say that I'm medium speed and medium rev. Ball rotation is right around 45 degrees.

Other balls I have move fine, but this ball just goes straight. Is it possible that this layout just doesn't work for my style? I read another post about a strong layout can sometimes cancel out a strong core, could this be the case?

Doc Hollywood · « **Reply #16 on:** January 27, 2005, 08:39:13 AM »

Greg T - What change in oil pattern is there?

If your ball is flipping that much it is probably moving too early in the oil. You say it's drilled leverage. There are many leverage drills. Do you mean the pin is at 3 3/8 and the cg kicked right of that? It sounds like a rev leverage type of drill. Those type of drills begin to lay the core down faster and use the energy earlier. When that happens the ball tries to hook in the oil and doesn't move much. Think about turning your car wheels 45 degrees while on ice. The ball flares to maximum position and nothing left when it gets to the dry. So often times moving the cg closer to the track will slow this down and move the time when the ball flairs to later down the lane.

Of course axis tilt has a lot to do with the layout. If you are high tilt you need the ball to lay down faster and a low tilt needs to hold to retain longer.

If you have question message me. I don't always peer into this forum.
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BigHorhn · « **Reply #17 on:** January 27, 2005, 09:41:38 AM »

Sounds like the cover and core don't match the lanes conditions that you're bowling on this year. Leave the velocity alone its a good ball. Invest in a
AMF Triumph it is a better match up for the conditions you're bowling on. Chitown is right the drill is secondary to the cover in importance to ball reaction.

stanski · « **Reply #18 on:** January 30, 2005, 01:25:21 AM »

quote:
The only thing that drill layout does is change the distance the ball gets into its foward roll. Listen drill layouts count for about 15 percent of a balls reaction. Most of the reaction of a ball is due to the cover. I think people put too much thought into layouts instead of the covers. I can take a old urathane ball drilled like a spare ball and bowl well with it on the right conditions. Match the balls cover to the lane conditions. I like to have my arsenal drilled the same xcept for my heavy oil ball.

15%??? I would say more like anywhere from 30-45% of the ball reaction can be modified by a drill pattern. Lets take an example: Try throwing zone classic with the pin on your pap and the mb on your track. This will be the most rolly ball you could ever imagine, probably a lighter condition ball. It will probably rev off your hand and even out the backend on even the driest of backends.

Now, take another zone classic and put the pin 4 inches from your pap and the mb at 75 degrees. This ball will be COMPLETELY skid snap, more of a medium-medium heavy ball depending on how much hand you have.

Having 2 command zone arcs drilled only slightly different (one in pin 3 3/8 from pap, hole in thumb positive, other is pin 4 inches, hole 1 inch past pap) I can tell you that the drilling does make a difference in ball reaction. The first cza is all roll, great for a heavier pattern, the second one gets down the lane much cleaner and doesn't rev up as hard, but the flare does increase the backend. There is a 4 board difference on a house shot between the hook on these balls.

You are mistaken if you think drilling does not make a large impact on reaction for the better bowler, as it does. 95% of bowlers can just get balls drilled label, however, as they have so many other problems in there games and only have one ball. Once they get to the 190 level, thats when drill patterns can really make a difference and help someones game out, by helping them carry an extra strike or 2 a game.
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stanski

DukeHarding · « **Reply #19 on:** January 30, 2005, 02:45:45 AM »

quote:

15%??? I would say more like anywhere from 30-45% of the ball reaction can be modified by a drill pattern.

Straight out of Revolutions 2, by Chip Zielke:

1. Coverstock / Surface Prep = 65-70%
2. Weight Block / Core Design = 15-20%
3. Dynamic Balance = 10-15%
3. Balance Holes = 0-5%
4. Mass Bias = 0-5%
5. Static Weight = 0-5%

Coverstock and Surface Prep have been the major influence on ball reaction, for a long time. Hard to diagnosis a ball reaction on-line, Especially, when you don't know a bowler, and can't see their game.

It's all about matching up: speed, revs, axis tilt, oil pattern, amount of lane play, etc. (imho)
--------------------
Duke Harding

++++++++++++++++++++++++++++++++++++++++++++
I'd Rather be Lucky than Good.

AdrianS · « **Reply #20 on:** February 01, 2005, 03:19:16 AM »

When you go into those percentages wouldn't assymetricals have a greater effect percentage wise than 'normal' cores (with a little dip in the ball surface %)
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Author Topic: Layout - how important? (Read 5321 times)

qstick777

Layout - how important?

Doc Hollywood

Re: Layout - how important?

BigHorhn

Re: Layout - how important?

stanski

Re: Layout - how important?

DukeHarding

Re: Layout - how important?

AdrianS

Re: Layout - how important?