if you adjust your span, how much would you adjust your pitches?  hypothetical question, say you have a span of 4 1/2 and 4 5/8 and you have 1/8 reverse pitch on both of the fingers.  If you were to make the span longer by say a 1/16 or even 1/8 how much reverse pitch would you add to the fingers to adjust for this span movement?  and also would you have to do anything pitch wise to the thumb?

Lateral thumb pitch.

Grab coke bottle, if one has thumb point at index finger= 1/8 lateral out between index and middle = 0 lateral
middle finger 1/8 lateral under palm
between middle and ring 1/4 lateral under palm.

Reverse pitch thumb Bill insists chart tells all4 1/4 span done in a relaxed way = 0 forward reverse pitch.
Each 1/8 inch longer leads to 1/16 more reverse.
Each 1/8 forward leads to 1/16 more forward.
Each of these settings is what Bill calls the 63 degree method between thumb and span angle.

Finger laterals he says are all comfort with no utility, standard is 0 right middle finger and 5/8 lateral right ring.(I don't see many drillers doing this.)Finger forward reverse he claims are a matter of utility, more forward more lift, more reverse less hit and lift. Standard he says with proper thumb pitch is 0 for all fingertips.

Also to increase finger forward pitch one must decrease the span on that finger to give the same feel.
Be careful do not increase finger forward without decreasing span! It can cause strain and injuries to fingers.

LL
--------------------
Eric T. Spivey, P.E.
 Visionary Test Staff Member
http://www.visionarybowling.com

On edit
I forget the exact ratios for the fingers, but I think it's
for every 32nd or 16th forward in the fingers you shorten the span an 8th

Edited on 8/11/2004 3:21 PM