Ebonite

Drilling #1

• Ball Reaction: Long and Strong
• Suitable for: Most styles and target lines
• Flare potential: Medium High
• Center of Gravity: The center of gravity placement may or may not fall inside the CG area. If it does not, than the balance hole location may need to be adjusted.
• Mass Bias Placement: Place Mass Bias 3 inches to the right of the thumb hole. If needed, place balance hole 4 inches over and 1/2 up and drill back to statically legal.

*Mass Bias Placement for HIGH REV PLAYERS; for players that have RPM rates of 350 and greater, you need to place the Mass Bias Location in the 70 to 90 degree location.

Drilling #2

• Ball Reaction: Long and Strong
• Suitable for: Most Styles
• Flare potential: High
• Pin Placement: Place pin 4 1/2 from the PAP
• Center of Gravity: The Center of Gravity placement may or may not fall inside the CG area. If it does not, than the balance hole location may need to be adjusted.

*Mass Bias Location: Place Mass Bias at a 45 degree angle to the right of the thumb hole. If needed, place the balance hole over on the Vertical Axis Line and 2 inches down and drill back to negative side weight. The bigger and deeper the hole is, the stronger the ball reaction will be. Remember to keep the ball statically legal.
**Mass Bias Placement for HIGH REV PLAYERS; for players that have RPM rates of 350 and greater, you need to place the Mass Bias Location in the 70 to 90 degree location.

Drilling #3

• Ball Reaction: Early and Strong
• Suitable for: High Ball Speed, Low RPM’s, Heavy Oil Patterns
• Flare potential: Very High
• Pin Placement: Place pin 3 1/2 inches from the PAP
• Center of Gravity: The Center of Gravity placement may or may not fall inside the CG Area. If this is the case, than the balance hole location may need to be adjusted.

*Mass Bias Location: Place Mass Bias in line with the pin. If needed, place balance hole over on the PAP and drill back to statically legal.
**Mass Bias Placement for HIGH REV PLAYERS, for players that have RPM rates of 350 and greater, you need to place the Mass Bias Location in the 70 to 90 degree location.

Drilling #4: Full Roller Layout

• Ball Reaction: Strong Arc
• Suitable for: Full Rollers
• Flare potential: Large
• Pin Placement: Place pin 3 1/2 inches from the bowlers center of span in an 8:00 direction.
• Center of Gravity: The center of Gravity placement may or may not fall inside the cg area. If it does not then the balance hole location may need to be adjusted.
• Mass Bias Placement: Place Mass Bias at a 2:00 direction from the center of span. If needed, place balance hole 8 inches from the center of span in a 2:00 direction to remove excess positive side weight. Place balance hole 6 inches from the center of span in a 8:00 direction to remove excess negative side weight.

Drilling #5: Do Not Drill

This is a NON RECOMMENDED LAYOUT. This layout will produce a very mild ball reaction and is not recommended.

• Ball Reaction: Very mild
• Suitable for: Extremely high rev rates
• Flare potential: Very Small
• Pin Placement: Not recommended with this layout
• Mass Bias Placement: Mass Bias Placements to the left of the thumb hole are not recommended because of the severe reduction in flare potential.

Advanced (Trick) Tour Layouts

Tommy Jones Favorite Trick Layout

• Ball Reaction: Long and most aggressive at the breakpoint for Tommy Jones
• Suitable for: High Rev Rates only
• Flare potential: High
• Pin Placement: Place Pin 1” inches away from the Vertical Axis Line and 4” inches away from the PAP
• Center of Gravity: The center of gravity placement may or may not fall inside the CG area. It it doesn’t then the balance hole location may need to be adjusted.
• Mass Bias Placement: Mass Bias Placement at 80 degree angle to the right of the thumb hole. If needed place balance hole approx 4 inches to the right and drill the ball back to statically legal

Jason Couch Favorite Trick Layout

• Ball Reaction: Long and most continuous for Jason
• Couch Suitable for: High Rev Rates only; Pin out distance must be at least 3.5 inches out.
• Flare potential: High
• Pin Placement: Place Pin: 1” inches away from the Vertical Axis Line and 5” inches away from the PAP
• Center of Gravity: The center of gravity placement may or may not fall inside the CG area. If it doesn’t then the balance hole location may need to be adjusted.
• Mass Bias Placement: Mass Bias Placement at 60 degree angle to the left of the thumb hole. If needed place balance hole approx 4 inches to the right and 1 inch up and drill the ball back to statically legal.

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