JUGS Sports Cricket Bowling Machine - Manual (Page 20)

18
Operation
Bowling In-Swingers and Out-Swingers:
1. Place toggle switch on the Control Panel in the ON position (Figure 4).
Gradually turn the right-hand speed dial to the full clockwise position. The right
wheel will be turning rapidly clockwise, and the left wheel will be turning slowly
counter-clockwise.
a. The above will result in the maximum right-hand In-Swinger. Dial settings
should be reversed for a left-hand In-Swinger
b. For Slow-Spin deliveries, loosen the lock knob and tilt the bowling machine
to a 65-degree angle, with the faster turning wheel highest.
c. To increase the speed of the ball, turn the dial for the slower turning wheel
clockwise.
d. To reduce the speed of the ball, or to reduce the amount of curve, turn the
dial counter-clockwise for the faster turning wheel.
2. Loosen Handle-Bar lock knob (Figure 3) and adjust it until the desired
trajectory is attained, then tighten it securely. For fine adjustments, loosen the
lock knob slightly and adjust the Handle Bar down, or sideways. (It is normal
to bowl five or six test balls before arriving at the curve setting and aim point
you desire.) Always have the batter and others stand clear while adjusting your
JUGS bowling machine and bowling test balls.
3. Be sure to try different settings. For example, when bowling an In-Swinger, set
the right-hand dial at 80 or 95 and the left-hand dial at 45 or 60. Observe the
curve and speed of the ball and decide whether the settings used give you the
speed and type of curve desired. Most coaches devise a table for the operators
of the bowling machine to show what settings to use for any given practice.
NOTE: The greater the speed differential between the wheels, the greater the
curve. Conversely, a small differential will result in a smaller curve.