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Author Topic: Ra values  (Read 3103 times)

NHS

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Ra values
« on: September 01, 2015, 08:38:22 PM »
I'm trying to find some place that has the ra values for any ball, but haven't had any luck.   Does anyone have any idea where I can find them ?
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kidlost2000

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Re: Ra values
« Reply #1 on: September 01, 2015, 10:09:49 PM »
Likely would have to contact the manufactures for that information.
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…… you can't  add a physics term to a bowling term and expect it to mean something.

tommygn

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Re: Ra values
« Reply #2 on: September 02, 2015, 08:11:41 AM »
Ra values change as a ball is continually rolled down the lane, and the cover changes, and or you personally make a surface change to the ball.

However, Bowlers Journal lists Ra values of the factory surface in their ball review section. I believe they use the JayHawk surface scanning machine to get the Ra value and effective surface grit.
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God creates us with a blank canvas, and the "picture" we paint is up to us. Paint a picture you like and love!

NHS

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Re: Ra values
« Reply #3 on: September 02, 2015, 01:40:20 PM »
Thanks tommygn,  the information in BJ was just what I was looking for.
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