The preferred spin axis psa on an asymmetrical ball is one of the most misunderstood topics surrounding bowling ball technology in today s game.
Bowling ball pin position.
This video shows the bowling ball s rev rate changing as it goes down the lane.
Watch the trajectories of two identical bowling.
We re often told two main things about how pin to pap distance affects ball motion.
A majority of bowlers don t realize how important it is and how much more the ball reaction can be fine tuned when drilling an asymmetrical ball.
Bowling ball manufacturers have to center the cores perfectly inside the ball and to do this they have to suspend the core in a stationary position while the mold hardens.
By changing the drilling location i e.
Pin to pap distance is one element of a bowling ball s layout.
Mass bias is another way that the ball reaction can be tweaked.
Other factors must be considered.
Pin down the ball motion can be tweaked.
Placing the pin in this position in the hammer spike would once again decrease the flare potential to 4 inches.
Even standard label drill patterns with the pin at 1 30 from the cg place the pin very near almost everyone s leverage point.
Pin placement in drilling a bowling ball is not necessarily significant.
The position of the core stays in relatively.
The higher the rev rate the more impact the core can have on the overall ball motion.
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They use a small pin to support the core during this process.
In the ball rating matrix i rate the rg on a scale of 1 to 10 with the pin in the leverage position.
To break it down in simple terms.