BallReviews

Equipment Boards => Roto Grip => Topic started by: Big Jake on April 29, 2007, 11:26:12 AM

Title: need a ball-term explanation
Post by: Big Jake on April 29, 2007, 11:26:12 AM
Hey Group,

 I just borrowed this info from the other thread here:

--------------- SNIP-----------------SNIP----------------

Epic Quest
Ultimate Vision solid particle 2%
Purple/Navy/Forest
med/heavy oil
spin rate 7 seconds
7+ inches track flare
1000 Abralon
rg 2.53
diff .052

--------------- SNIP-----------------SNIP----------------

Ok, can some one explain to me the term spin rate and what that info would do for me in purchasing a ball.

Thanks
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Big Jake

Title: Re: need a ball-term explanation
Post by: laufaye on April 29, 2007, 10:29:38 PM
Spin rate is to measure how fast a ball spin to the PSA.  You can find out more by going to Morich site and look into the Determinator section.

So basically the less time the stronger the MB.
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Laufaye
Title: Re: need a ball-term explanation
Post by: shelley on April 29, 2007, 10:57:10 PM
What makes asymmetric balls interesting is that they have a strong preferred spin axis (PSA).  The PSA is one of the most stable axes that the ball can spin on, so it has a strong desire to change from an arbitrary spin axis to the preferred one.  The spin time is the time it takes for such a ball to find its PSA from some standard starting axis.

There's a special machine called the deTerminator[/i] that is used to find spin times.  Lower spin times mean a strong mass bias, more asymmetry, stronger PSA.  That means the position of the marked MB has a greater effect on ball reaction.

SH (http://"http://morichbowling.com/deTerminator/InfoSheet.htm")