When the oscillation speed is zero, it is designed to serve the balls of fixed point.
When it works with adjusting knob, it is designed to serve the random balls by right to left.
The range of the oscillation is about 15 Â°. As shown above,the serve point of ball is within the red arrow which It will make sure that at the same speed, the left and right swinging balls will not run out of the table.
2 types: can serve ball directly and indirectly.
Direct type: suitable for daily practice,compared with indirect type,it is much stronger on its speed and spin.
Steps: Loosen the copper knob of the robot head,and adjust the elevation,then adjust the proper speed and spin.
Indirectly type: suitable for beginner to practice different skill of serving and returning ball.
Steps: Loosen the copper knob of the robot head,and adjust the elevation(lower than direct type),then adjust the proper speed and spin.
Detail of control box(as shown on the left):
A.Turn it on, the machine start to work.Turn it up, the frequency of the ball will be speed up.
B.Turn it up, the robot head will swing faster,and the balls can hit wider area.
C.Turn it up, the speed of top spin ball can get higher.
D.Turn it up, the speed of back spin ball can get higher.
Detail of 7 Arc positions of robot head(as shown on the right):
The robot head can be rotated manually to achieve the effect of left-spin and right-spin,there are 7 arc can be rotated.Do turn off the machine before adjusting the robot head.
Serve different spin balls:
How to serve top-spin ball: When the level of top-spin(knob C) is higher than back-spin(knob D).
How to serve back-spin ball: When the level of top-spin(knob C) is lower than back-spin(knob D).
How to serve left-spin ball: When the position of the head is in the 1-3 position.
How to serve right-spin ball: When the position of the head is in the 5-7 position.
How to serve no-spin ball: When the level of top-spin(knob C) is equals back-spin(knob D) while the position of the head is in the 4 position.
How to serve multi-spin ball: Combine the four spin,you will have more fun!! Start your training journey right now!!
|Serve frequency||40-70/minutes,0-5 level can be adjusted|
|Serve speed||4-40 m/s|
|Oscillation range||15 Â°|
|Oscillation frequency||0-5 level can be adjusted|
|Spin direction||2 wheels drive ( topspin, backspin, non-spin, left-spin, right-spinï¼multi-spin )|
|Load ball||More than 100pcs|
|Package Size||40*38*37 cm|