How was the ball sent out by the machine?
The high-performance ball machines currently on the market use wheels to serve. Usually two high-speed wheels are used, and their rotation is reversed (so the latter is described by the double-rotation). The space between the wheels is small. When the ball rolls from the rail into between the two wheels, the wheel will send the ball.
How does the ball machine spin the ball?
The change of the relative rotational speed of the two wheels of the two-wheeled serve can change the ball's selection. When the upper runner turns faster than the lower runner, the top spin is emitted. When the lower wheel turns faster, the lower spin is emitted. Of course, when the two-wheel speed is the same, the machine emits a flat shot. The air compression ball machine uses the friction in the pipe or adjusts the outer pipe to produce the rotation: when the lower end of the launched tennis ball is rubbed by the ball machine, the ball is spun up, and vice versa.
Packaging Details:Carton with plywood
Delivery Time:Shipped in 3 days after payment
DK sportbot is a high-tech sporting goods company of collecting scientific research, manufacturing and sales. Company aim at survival, technology and development, concept of "quality to win the market, Honesty molded brand" business philosophy and dedication to our customers
t, Honesty molded brand" business philosophy and dedication to our customers