JUGS Sports Combo (2 wheel) Pitching Machine - Manual (Page 22)

20
Operation
Throwing Curveballs:
1. Place toggle switch on the Control Panel (Figure 5) in the ON position.
Gradually turn right-hand speed dial to 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 curve. Dial settings
should be reversed for a left-hand curve.
b. For overhand curves, loosen lock knob and tilt pitching machine to a
65 degree angle with faster turning wheel highest.
c. To increase the speed of the ball, turn dial for slower turning wheel
clockwise.
d. To reduce the speed of the ball, or to reduce the amount of curve,
turn dial counter-clockwise for the faster turning wheel.
2. Loosen Handle Bar lock knob (Figure 3) and adjust until desired trajectory
is attained, then tighten securely. For fine adjustments, loosen lock knob
slightly and adjust Handle Bar down, or sideways. (It is normal to throw
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 pitching machine and throwing test balls.
3. Be sure to try different settings. For example, when throwing a right-hand
curve, set the right hand dial at 70, 75, or 80 and the left hand dial at 30,
35, or 40. 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 pitching 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 smaller differential will result in a smaller curve.