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Ball Machine Selector 2005 — Propulsion

Spinning Wheel Propulsion. An “X” in this column indicates that the machine uses two spinning wheels to feed the ball to you. In almost every case the spinning wheels are stacked vertically with just enough space between them for a ball to squeeze through. So, the faster the wheels are spinning, the faster the balls will be propelled.

Air Pressure Propulsion. An “X” in this column indicates that the machine shoots the ball through a tube like a cannon. The amount of air pressure determines the speed and depth of the shot.

Feeding Intervals. This column indicates how often the machine can feed balls, in seconds. Most machines offer a range of intervals. Smaller intervals make for a harder workout, while higher intervals allow more time for preparation and watching your results.

Top Speed. Almost every machine offers the ability to adjust the speed at which the ball is shot from the machine. They all are capable of feeding a very slow ball for shots shorter in the court and for weaker players. So, we just list the fastest speed that each manufacturer says the machine will shoot the ball. However, most of the time, most players don’t need the ball speed maxed out because the players they play with don’t hit that hard.

Elevation Control — Electronic. An “X” in this column indicates that the machine can change the height of the shot by pushing a button or turning a knob.

Elevation Control — Manual. An “X” in this column indicates that the machine can shoot balls at different heights, but you have to physically aim a shooting arm or tilt the machine in some way to do so.

Able to Feed Lobs. An “X” in this column indicates that the manufacturer tells us the machine is capable of feeding lobs to allow you to practice your overheads.

Able to Feed Topspin & Underspin. An “X” in this column means that the machine uses spinning wheels to propel the balls and you can make one wheel spin faster than the other to put spin on the top or bottom of the ball. If you see a price in this column, it means that the machine is capable of putting spin on the ball, but you must purchase an extra option to do so.

From the July 2005 issue
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