How do you calculate your rev rate and your PAP? I am assuming the axis point is the type of roll you are generating? I have a pretty high track, but I was wondering how you guys calculate these and measure them? I want to start getting my equipment a little more personalized and tailored around my game. Right now I just tell the pro shop guy what I am looking for in a ball and he just drills the ball for me but doesn't really discuss the layout or anything. I know my ball speed and I thought possibly you just put a piece of tape above the finger grips and counted the revolutions down the lane and used a type of multiplier? Any help would be appreciated guys.

There are a few ways to find your PAP with varying degrees of accuracy.  The poor-man's way is to put a piece of really visible tape where you think your PAP is.  Throw the ball, if the tape is stationary in the first few feet of the lane, that's your PAP.  If not, guess again.  The smaller the tape, the more accurate you can get.  Using a low-flaring ball can help.

Alternatively, throw the ball so that there are oil rings on it.  Put it on a spinner and adjust the ball so the first oil ring is relatively stationary.  The north pole is your PAP (or NAP if you put the ball on the spinner upside down).

Calculating your rev rate can be tricky as it varies throughout the lane as the ball picks up its roll.  With a good video camera, record the ball as it travels through the heads.  Count the revolutions (slow-motion is useful here) and measure the time between leaving your hand and crossing the arrows.  Simple division will give you your rev rate.  Getting good resolution (in time) is usually the hard part, a difference of a quarter of a second can make the measurement off by quite a lot.  Again, slow-motion can be helpful as you can just count frames and divide by 30 (usually 30 frames per second).

SH