Hello Justin, I have been reading up on the dual angle and becoming quite intregued by it all. I have have a good understanding of what all the angles do to the reaction of a ball. The Pin to PAP is what is keeping me in the fog a little. I notice you keep your angles fairly similar most of the time, yet change the Pin to PAP slightly once in a while. That is where I am unclear, can you clear that up for me please? I do need to find my PAP first and formost then I plan to start laying out my own equipment. I just want to know 100% where I need to be. I am about 90% now.
I appreciate it! Good bowling as of late as well, had my first Motiv 300 & 800 (811) last week with the TX1, and am looking forward to more.
You will, over time, find angle sums that match well to your game.
The pin to PAP impacts the final drilled differential of the ball. In symmetrical balls this directly impacts the amount of flare, and the resulting amount of friction the ball creates. 3 3/8 is straight leverage, and the strongest placement. Move closer or further to the PAP and the flare reduces. Generally, more flare equates to an earlier and smoother reaction. When you get within 2" of the PAP you have a very rolly and not too aggressive reaction because you are promoting early energy bleed. 4+ pins generally promote length and energy conservation, resulting in more aggressive backend reaction. Once you get past 5.75" then you generally get into length and control, unless the starting diff is .060 or higher. Weight hole placement also has a very significant impact on the drilled diff, and reaction. The gradient line is a good guide to this.
In dual the dual angle system, the Drilling angle determines the length, the VAL angle determines how quickly the ball reacts to friction. Being a hand dominant player, I usually prefer higher angle sums, as this helps me control the ball reaction by promoting a longer, smoother reaction to friction.
In my opinion this is the current day bowling formula(I need to go to college and take calculus so I can prove or disprove this):
A=Energy created by your approach.
R=% of energy transferred to the ball in your release(this is where many bowlers need help).
Fb=Friction created by the ball.
Ft=Total Friction created by the playing surface.
P.S. You not only need to know your PAP, but your track diameter as well. Someone with an 8" track diameter and someone with a 13" track diameter can have the same PAP, but the 13" track diameter will create significantly more friction, even with the same layout, resulting in a different reaction.