That is a very good question Storm I would have to think it wouldn't
make a big difference for the layout but I'm probably way off and wrong. LOL!!!!!
Maybe someone can help on this. The PAP is measured from grip center. That is the mid line between fingers and thumb, or the bridge between fingers on the no thumb hole.
My question is if someone that throws the ball without a thumb (but has a thumb drilled) and they had their PAP measured from grip center (fingers to thumb).. Would applying this PAP to a balls that doesn't have a thumb hole effect the layout? This assuming that you map a thumb hole (to get the mid line) but just don't drill it.
That is a very good question Storm I would have to think it wouldn't
make a big difference for the layout but I'm probably way off and wrong. LOL!!!!!
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Right handed, ex-cranker now a power tweener approx. 350 - 400 RPM's PAP 4 1/2" over 1" up high league sanctioned game 300 high league sanctioned series 788
Bill
Or to even add on to it, wouldn't the actually PAP remain the same but the measurements to get to it would change.
Let's take me for example. My pap is 4 5/8 over and 1/4 up from grip center (finger/thumb)... If measured from the fingers only wouldn't it be (roughly) 4 5/8 over and 2 1/8 down? This taking into account the difference from the center of fingers/thumb to the center of the bridge
As long as your PAP doesn't change (going from using your thumb to not using it), the layout wouldn't change.
Your just changing where you measured your grip from the PAP.
Say you map out a undrilled ball with a 70 x 4.5" x 40 layout, when you go to map out the grip next.
It doesn't matter whether you use the (finger/thumb) grip center or the (Bridge) grip center measurements you had. The finger holes will wind up in the same place and the layout won't change.
Now the grip center affects where you measure static weights from And if you don't drill a thumb hole that will have a bearing on what the drilled layout will ultimately be.
Last edited by bowl1820; 08-13-2016 at 05:38 PM.
Right handed Stroker, high track ,about 13 degree axis tilt. PAP is located 5 9/16” over 1 3/4” up.Speed ave. about 14 mph at the pins. Medium rev’s.High Game 300, High series 798
"Talent without training is nothing." Luke Skywalker
Looking at the ball can offer good clues too. When I saw something about the pap with my eyes i did not like in November I changed and my scores have reminded more stable rather than 149 to 217, also i fatigue less
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I've found two-habders PAPs two different ways. The first bowler had thumb hole drilled and was switching. I measured his PAP the conventional way and subtracted half the span distance to go off the finger holes for future balls. We did this several times as it was a bit of an experiment for me.
The second way I used was recently and just went by the fingers. This kid had a polyester ball with no thumb drilled that he has been using for awhile and wanted to get a reactive resin ball.
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We didn't have knowledge of any other way.So yes, I measured PAP with the thumb hole which includes grip centerline. So for example his PAP was 1"^ with a span of 4". I took half his span (2") and subtracted it from the PAP making it 1"v. If my thought process was correct only the longtitude would be affected as the latitude should remain the same.
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There is no need to measure half the span, P.A.P. is measured from the grip center.
For a thumbless bowler the grip center is between the fingerholes, you would just measure from there as you normally would to find the P.A.P. location.
Right handed Stroker, high track ,about 13 degree axis tilt. PAP is located 5 9/16” over 1 3/4” up.Speed ave. about 14 mph at the pins. Medium rev’s.High Game 300, High series 798
"Talent without training is nothing." Luke Skywalker
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