So you know the drill…
…your customer asks for the strongest drilling angle, you max it out with a leveraged pin angle and some drilling angle degree this by that. Does it work in the bowler’s best interest based off of their PAP distance? Are you combining the fact that the bowler may be of a specific style of player—you should?
Here are some things to consider, first and foremost bowlers who tend to roll the ball more end over end or forward in rotation have unique characteristics to their ball motion. These bowlers because of this style tend to need more energy retention in the layout angle due to the fact that the ball has a smaller axis of rotation direction, generally 10-35°. This unique angle tends to use up the internal energy of the ball earlier as it rolls down the lane crossing from the oil to dry backend. A big complaint from this style is that the ball runs out of gas making the corner. These bowlers typically have larger Horizontal measurements ranging from 5-1/2 to 6-1/2” in the PAP measurement and should utilize more drilling angles that are conducive to storing energy and releasing them later in the lane. These drilling angles require larger primary and smaller secondary angles with larger pin to PAP distances to get the energy down the lane to a location where it is more noticeable, more advantageous to a higher scoring potential. This places the pin in a higher Rg quadrant and allows for more energy retention.
In bowlers where the angle of rotation are medium, around 40-60° with a 4-1/2 to 5-1/2” or medium size PAP distances varying layouts of the primary and secondary drill angle can be used. These bowlers will then need more emphasis on what degree compliments there condition they are to bowl on. Use of smaller primary angle to get the ball revving quicker or larger to delay the energy release coupled with smaller or larger secondary to make the transition quicker or gentle in transition will affect the total motion for a given condition. Keep in mind the distance of the pin to PAP can greatly affect the total portion of the energy to be used.
For bowlers who spin the ball or twirl it, these bowlers typically have smaller PAP measurements and larger axis of rotation angles 65-90°. These measurements range from 4-1/2 or less of a Horizontal Measurement and usually a larger vertical axis as well. These bowlers need help in getting the ball to make the corner as the tilt and axis of rotation tend to delay the release of energy. The complaint is that it never slows down or makes the corner. Using smaller primary angles and larger secondary allows for the drilling to lower the internal Rg allows for a quicker release of the balls energy.
These recommendations are just ideas as to how to match up a style to a layout, and are only to be used as a guide line but it can create a better success rate for 95% of your customers.
For more info visit Turbo Grips for the Motion enhancement Guide for the Pro Sect layout tool.
USBC Gold Coach