How do you calculate PAP in bowling?

Trace a line on the edge of the first oil ring nearest your finger and thumbhole. Next, take your track line and place it so that it is parallel to the table or counter it is on. Mark the center on the top of the ball and put a piece of tape on it and you have your PAP.

What is a Pap bowling?

Positive Axis Point (PAP) The PAP is your Positive Axis Point. This is the axis that your ball rolls on while traveling down the lane. There are actually 2 axis points that make an imaginary line through your ball as it rolls, with the other being the Negative Axis Point (NAP).

What is a positive axis?

The positive axis point, or PAP, is the one point on the ball that is equidistant from every point of the ball’s track. Put another way, look at the ring of oil around the ball. There’s one spot on the entire ball that is exactly the same distance from every piece of that oil ring.

What is the pin placement on a bowling ball?

As we know, the pin is the designation for the x-axis on the surface of the ball. It is the very top of the core. Approximately 6 3/4″ away from the x-axis is the y-axis. This is 1/4 of the ball and gets us directly into the side of the core.

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What does top weight mean on a bowling ball?

Top weight is defined as the actual weight difference between the Bottom Half and the Top Half of the Bowling Ball. This allows for the holes to be drilled into the bowling ball removing top weight so that the ball’s top weight is close to zero when complete. USBC actually regulates static weights.

Do bowling balls wear out?

With proper maintenance, you should get at least 5-10 years out of a quality bowling ball.

How important is PAP in bowling?

The effect of pin-to-PAP distance Pin-to-PAP distance is one element of a bowling ball’s layout. First, the conventional wisdom says that pin-to-PAP distance determines how much track flare the ball will have because it determines how “stable” or “unstable” the core is at the point of release.

What is RG in a bowling ball?

Radius of Gyration (RG) – An account of the location of the mass inside a bowling ball. Rg tells us whether the ball has the mass toward the center of the ball (low rg), toward the cover of the ball (high rg) or somewhere in between (medium rg). High rg balls lope down the lane saving the energy until later.

What is the mass bias on a bowling ball?

The term “mass bias” refers to the fact that the center of mass of a bowling ball is not located directly under the pin of the ball. Having a “mass bias” causes the center of gravity (CG) mark of a ball to move away from the pin, resulting in a pin-out ball. Therefore, all pin-out balls have a mass bias.

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What does pin to PAP mean?

The Pin-to-PAP distance ( appropriately enough ) is the distance from your positive axis point to the pin. It is going to control how much of the core’s flare potential you utilize in the bowling ball. It is controlling how the core is oriented at the moment of release.

What is pin length of bowling ball?

World Bowling, formerly World Tenpin Bowling Association, has adopted the USBC specifications. Pins are 15 inches (380 mm) tall, 4.75 inches (121 mm) wide at their widest point, and weigh 3 pounds 8 ounces (1.6 kilograms) ±2 ounces (0.057 kilograms).