win a ball from Bowling.com
« previous next »
Pages: [1]

Author Topic: counter hole  (Read 1211 times)

bangzula

  • Jr. Member
  • **
  • Posts: 6
counter hole
« on: January 05, 2010, 04:35:58 AM »
Does anybody know why the extra fourth hole is drilled?  The shop says that when you drill a ball more aggressive you have to drill the counter hole to keep the ball legal?  However, they really didn't explain why.
Logged

 

milorafferty

  • Hero Member
  • *****
  • Posts: 11166
  • I have a name, therefore no preferred pronouns.
Re: counter hole
« Reply #1 on: January 05, 2010, 12:49:17 PM »
USBC rules require that a ball have a diffence of less than 1 ounce between each side. (As I understand it anyway.) So if you drill a ball where the CG is away from the center of the grip, it can make the ball side or top weight not conform to this rule.
--------------------
Nine in the pit with the Tenpin left standing. dooooh!!
Logged
"If guns kill people, do pencils misspell words?"

"If you don't stand for our flag, then don't expect me to give a damn about your feelings."

JohnP

  • Hero Member
  • *****
  • Posts: 5819
Re: counter hole
« Reply #2 on: January 05, 2010, 09:39:30 PM »
Also, a balance hole can be used to modify the ball's reaction even if the static weights are legal, as long as they are still legal after the hole is added.  --  JohnP
Logged
Pages: [1]
« previous next »