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Author Topic: No Thumber  (Read 1303 times)

apocalyptic_rabbit

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No Thumber
« on: January 06, 2011, 04:22:41 PM »
 
I got a friend who doesn't use his thumb, and his balls are all drilled with an unused thumb hole. 
 
Now he was questioning me about not drilling a thumb hole, I didn't know what to tell him.... 
 
is it legal? what are the constraints on the static weights.... 
 
any thoughts?  
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Aloarjr810

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Re: No Thumber
« Reply #1 on: January 21, 2011, 07:16:20 AM »
Yes you can do it.
 
Balance:
The following tolerances shall be permissible in the balance
of a bowling ball used in certified competition:
1. 10.01 pounds or more:
a. Not more than 3 ounces difference between top
half of the ball (finger hole side) and the bottom
half (side opposite the finger holes).
b. Not more than 1 ounce difference between the
sides to the right and left of the finger holes or
between the sides in front and back of the finger
holes.
c. A ball drilled without a thumb may not have more
than 3 ounces difference between the top half and
bottom half of the ball.
d. A ball drilled without any finger holes or indentations,
may not have more than 1 ounce difference
between any two halves of the ball.
e. A ball used without any hole or indentations
may not have more than 1 ounce difference between
any two halves of the ball.
 
See Equipment & Specs. Manual for more info.
 
 
Edited by Aloarjr810 on 1/21/2011 at 8:17 AM
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Aloarjr810
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