BallReviews

General Category => Drilling & Layouts => Topic started by: omegabowler on June 23, 2005, 03:28:40 PM

Title: PSA on Symetrical balls?
Post by: omegabowler on June 23, 2005, 03:28:40 PM

I a little fuzzy on the the whole PSA thing. I have read it a few time on here and  need more info.

so the ball want to migrate to the thumb on a symetrical ball. what does that mean exactly in ball reaction?  is the PSA a positve side thing? what do static weight mean to this reaction?

is it better to enhance the migration to the thumb? and if so how? put the cg in the thumb?

more confusing terms

TIA
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"deserves got nothing to do with it."
-- William Munny

Title: Re: PSA on Symetrical balls?
Post by: Billy Ray on June 24, 2005, 07:59:23 AM

PSA is the preferred axis the ball wants to roll on and will try to migrate to while rolling. This moves slightly after drilling as you have reshaped the core and changed the dynamics somewhat.

Some balls have a PSA some do not. Those that do, have varying strengths of PSA (ie their spin times to reach their PSA.)

Statics have very little or no impact on reaction.(lets not start another runaway thread on this!)

Puttin the CG in the thumb will have very little impact other than needing to drill your thumb deep to maintain static legality. The pin/core location is more important to track flare/migration.

PSA is not a positive/negative side thing its the plane that the core wants to
spin on as being its most stable axes.



--------------------
Billy Ray


Edited on 6/24/2005 7:54 AM

Title: Re: PSA on Symetrical balls?
Post by: omegabowler on June 24, 2005, 08:02:53 AM

Thanks,
 As for Postive and neagtive I talking about the side of ball in relation to the pocket like PAP or NAP.

I am assuming the migration is to the PAP side of the ball?
--------------------
"deserves got nothing to do with it."
-- William Munny