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General Category => Drilling & Layouts => Topic started by: JS on September 12, 2005, 07:07:36 AM

Title: Allowable span deviations
Post by: JS on September 12, 2005, 07:07:36 AM
What is the "allowable" deviation in a span that would be considered right on.  For example, if my ring finger span is 4 11/16 what would be considered the norm plus or minus (1/64, 1/32, 1/16????).  I just measured 4 of my balls and got 4 11/16, 4 21/32, 4 21/32 and 4 19/32.  Thanks....JS
Title: Re: Allowable span deviations
Post by: agroves on September 12, 2005, 04:14:54 PM
I would call a 1/16 acceptable.  Most people aren't going to notice a 1/16.  I would rather it be a 1/16 short versus long.

Andrew
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Gore in '06!
Title: Re: Allowable span deviations
Post by: JohnP on September 12, 2005, 09:07:41 PM
I agree with Andrew that most bowlers can't feel 1/16" difference in span.  I purposely drilled one of my balls 1/16" shorter than the others and couldn't tell the difference.  But a good driller should be able to get within 1/32".  --  JohnP
Title: Re: Allowable span deviations
Post by: Pinbuster on September 13, 2005, 07:02:30 AM
It depends on the bowler.

I’m with the rest that 1/16” is generally undetectable by most bowlers.

But I know a few who can feel 1/32” difference. Norm Duke is one of them.  
Title: Re: Allowable span deviations
Post by: Mike Austin on September 14, 2005, 12:09:44 AM
1/16 is off, I'm not happy with that for my customers.  I can feel 1/16.  1/32 is okay, but I think many people can feel 1/16.  Bevel will usually fix the problem.  More than 1/16 is NOT okay.

Greg T, do you have that much deviation for your customers also?  If so, the price you mentioned charging as cheap as it is, is too high.  Just my 4 cents....
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Title: Re: Allowable span deviations
Post by: charlest on September 14, 2005, 12:25:40 AM
I can feel 1/32" off, BUT thumb hole beveling makes more a difference in "FEEL" than 1/32" - 1/16" off.
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