win a ball from Bowling.com

Author Topic: need a ball-term explanation  (Read 980 times)

Big Jake

  • Hero Member
  • *****
  • Posts: 1745
need a ball-term explanation
« 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
--------------------
Big Jake

Now throwing pretty much all flavors...

 

laufaye

  • Hero Member
  • *****
  • Posts: 1602
Re: need a ball-term explanation
« Reply #1 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.
--------------------
Laufaye

shelley

  • Hero Member
  • *****
  • Posts: 9655
Re: need a ball-term explanation
« Reply #2 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