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Author Topic: Benefits of Asymmetry  (Read 3568 times)

tomgriffin

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Benefits of Asymmetry
« on: May 02, 2009, 02:17:25 AM »
What are the benefits of asymmetrical cores?
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Juggernaut

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Re: Benefits of Asymmetry
« Reply #1 on: May 02, 2009, 10:23:19 AM »
Basically, they provide a stronger preffered spin axis than a symmetric ball that can be used to further enhance a balls reaction.

 In other words, if you have a release that needs a bit of help to get into a really good roll aspect, you could use an assymetrical ball to give the ball a bit more help getting into a good roll aspect VS a symmetric ball.

  There are other qualities to assymetrics, such as allowing "special" drillings not really available to symmetrics, but those are usually HIGHLY specialized and not much use to simple league bowlers.
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JustRico

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Re: Benefits of Asymmetry
« Reply #2 on: May 02, 2009, 10:27:08 AM »
IMHO, asymmetrical core balls allow for a little more finetuning, with layouts and not requiring a weight hole to create some.
The negative of asymmetrical cores are bowlers with inconsistant releases, will not benefit from stronger asymmetrical core balls. They will tend to lend themselves to inconsistant ball reactions.
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tomgriffin

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Re: Benefits of Asymmetry
« Reply #3 on: May 02, 2009, 10:27:34 AM »
I've been told that asymmetrics are only skid/flip when I'm really looking for more of a strong arc with continuation. Should I drill up an asymmetrical to get the extra power? Or step down to one of the symmetrical cores?
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JohnP

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Re: Benefits of Asymmetry
« Reply #4 on: May 02, 2009, 10:33:02 AM »
Placement of the mass bias allows fine tuning of the backend reaction.  --  JohnP
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Juggernaut

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Re: Benefits of Asymmetry
« Reply #5 on: May 02, 2009, 10:42:11 AM »
quote:
I've been told that asymmetrics are only skid/flip when I'm really looking for more of a strong arc with continuation. Should I drill up an asymmetrical to get the extra power? Or step down to one of the symmetrical cores?


 Whoever said that assymetrics are "only" skid/flip are incorrect in their thought process. One of the past years strongest "arc with continuation" balls was the original rotogrip CELL, which is assymetrical.

  For whatever reason, I have not had mch luck with assymetrical cored balls, and I tend to stay with symmetrical weightblocks. Conversely, a friend of mine has had great results with assymetrics and tend to stay with them. It is just something that some people match up well with and some people do not. You probably will not be able to tell until you actually try one for yourself.

  Remember, the weightblock only enhances a balls reaction, not creates it. If the conditions are right ( as was proven in the plastic ball tourney this year ), you can use a lower friction ball with little weightblock influence and still strike.  Total ball reaction is a function of friction between the ball and lane surface more than it is about weightblocks. An example is, if the lanes are TOTALLY DRY, even the weakest plastic ball will hook and strike hard, but if the lanes are TOTALLY FLOODED, no ball will hook, regardless of cover, surface, or weightblock.
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dizzyfugu

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Re: Benefits of Asymmetry
« Reply #6 on: May 05, 2009, 05:03:37 AM »
quote:
Basically, they provide a stronger preffered spin axis than a symmetric ball that can be used to further enhance a balls reaction.


As a side note: do NOT confuse "asymmetrical" with a high mass bias of a core! This is not the same. A core can be VERY asymmetrical (e. g. the famous Propeller core in Ebonite's TPC balls), but only have a low mass bias - so standard core drilling guidelines apply. Better always check RG and differential numbers to be sure.

The benefit of a strong mass bias (which can not only achieved by shape, also densities) is that you can exploit it since it determines the core's stable rotational axis (with a normal setup) - and this force can be used to fine-tune and emphasize a certain reaction. If you know what you want out of a ball, a strong MB core can give you an extra punch, but also limits IMO the range of utility of such a piece.
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stopncrank

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Re: Benefits of Asymmetry
« Reply #7 on: May 05, 2009, 03:28:41 PM »
assymetrics really help me on certain shots where i need a little more pop on the back of a pattern. for instance if i'm using a ball with a symetric core and im forced to play deep inside but the ball kinda lays off on the back, i have a couple different assymetrics laid out to give me a little more reaction on the back. it really helps you fine tune backend angles.
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