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Asymetrical Layout Guide

The layout required is determined by analyzing the
bowler’s ball speed, rev rate and axis tilt as well as
the lane condition being bowled on.

Track Circumference in Inches Axis Tilt in Degrees To Measure your diameter you are actually measuring the distance between the first ball track. Thus the closest track to the holes and the closest track to the holes on the bottom of the ball.
13 1/2 0 Track between 13 & 13.5 use MB positions
#1 or 2.
  • Bowler with this track has max forward roll.
  • Needs ball to retain energy longer.
13 3
12 1/2 7 Track between 12 & 12.5 use MB positions
#2, 1, or 3.
12 10
11 1/2 13 Track between 10.5 & 11.5 use MB positions
#3, 2, or 4. (This track difference is best)
11 17
10 1/2 20
10 24 Track between 9 & 10 use MB positions
#4, 3, or 5.
9 1/2 27
9 30
8 1/2 33

Track between 7.5 & 8.5 use MB positions
#5 or 4.

  • Bowler with this track is a spinner.
  • Needs core to pick up roll earlier.
8 37
7 1/2 40

  1. Choose the PIN to PAP distance for the flare desired.
  2. Choose the Mass Bias (RC) distance to PAP for ball reaction desired.
  3. Choose the vertical distance from the PIN to the Midline for length of breakpoint and transition desired.
  4. Locate the center of grip and drill the ball.
  5. Position the balance hole if desired.
  6. Adjust the side weight for smoothness of breakpoint desired.
  7. Adjust the surface of the ball to match the lane condition.

Track Flare

Track flare is determined by PIN to PAP distance.

Large Track Flare
2 ¾” to 6 ¼” from PAP

Pin distances closer to 6 ¼” produce more FORWARD ROLL
(less axis rotation)

Pin distances closer to 2 ¾” produce more SIDE ROLL
(more axis rotation)

Medium Track Flare
1 ½” to 2 ¾” from PAP

Small Track Flare
¾” to 1 ½” from PAP

  Ball reaction is determined by the Mass Bias (MB) to PAP distance.
  Indicates when the ball revs up and
starts to lose axis rotation and tilt.
 
:
The five basic ball reactions:
 
1. Late Revs or Control
  2. Sharp Break Point
  3. Hook Set
  4. Forward Roll
  5. Maximum Early Revs
 

 


Ball Reaction Chart
for
Mass Bias' are 6 3/4 from the Pin

Mass Bias Position Ball Reaction Pin to Positive Axis Point Distance  
1" 1 1/2" 2" 2 1/2" 3" 3 1/2" 4 4 1/2" 5 5 1/2"  
1
Late Revs
6 3/4" 6 3/4" 6 3/4" 6 3/4" 6 3/4" 6 3/4" 6 3/4" 6 3/4" 6 3/4" 6 3/4" Mass Bias to Positive Axis Point Distance
2
Sharp Break Point
6 1/2" 6 1/4" 6 1/8" 6" 5 7/8" 5 3/4" 5 1/2" 5 3/8" 5 1/4" 5 1/8"
3
Hook & Set
6 1/8" 5 7/8" 5 1/2" 5 1/4" 5" 4 3/4" 4 3/8" 4" 3 3/4" 3 1/2"
4
Forward Roll
6" 5 1/2" 5 1/8" 4 3/4" 4 3/8" 4" 3 1/2" 3 1/8" 2 3/4" 2 3/8"
5
Maximum Early Rev
5 3/4" 5 1/4" 4 3/4" 4 1/4" 3 3/4" 3 1/4" 2 3/4" 2 1/4" 1 3/4" 1 1/4"

Information provided by Mo-Rich