BallReviews

General Category => Miscellaneous => Topic started by: TheGom on December 12, 2011, 01:36:47 PM

Title: How Many Revs Does This Equal?
Post by: TheGom on December 12, 2011, 01:36:47 PM

 Tape was put on ball between the fingers and I could count 14 revolutions which I know is not much, but what does this equal in RPM's?
Speed was just below 16 mph, about 15.8 range.
Thanks

Title: Re: How Many Revs Does This Equal?
Post by: cory867 on December 13, 2011, 05:38:21 AM

that is about 325 rpm's.

Cory

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Title: Re: How Many Revs Does This Equal?
Post by: dizzyfugu on December 13, 2011, 07:58:47 AM

14 revolutions per what? Check the FAQ section, that might help.

DizzyFugu - Reporting from Germany
2010/11 Benrather BC Club Champion
Confused by bowling? Check out BR.com's vault of wisdom: the unofficial FAQ section

Title: Re: How Many Revs Does This Equal?
Post by: J_w73 on December 14, 2011, 02:34:46 PM

When doing it this way, you need to count the revolutions while the ball is in the oil and the time it takes the ball to get to the friction.

The ball will rev up considerably when it hits friction and it will skew your reading, 

 

Using a spare ball that doesn't read the lane may be your best bet too.. 

 

 

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18 mph,350 rpm,PAP 5 1/2 x 3/8up, 10-13 deg axis tilt, varied rotational axis deg.. usually 45+

HighGame 300 x 5, High Series 808
Book Average 220,PBA Xperience 193

 

Edited by J_w73 on 12/14/2011 at 3:35 PM

 

Edited by J_w73 on 12/14/2011 at 3:36 PM

Title: Re: How Many Revs Does This Equal?
Post by: TheGom on December 14, 2011, 06:08:23 PM

 Yes, understood....so  make it 13 revolutions and 1 free I was told...revs are?