Draw / Follow shot
The draw shot is used to spin the cue ball backwards.
For that, we position the tip of the cue on the low part of the cue ball:
DRAW SHOT' STANDARD TRAJECTORIES
Here are some backspin trajectories:
Angle 0 °: we returns on the initial spot
Aiming 1/4 radius from the center
Angle 22 °
Aiming 1/2 radius from the center
Angle 45 °
Aiming 1 radius from the center
Angle 90 °
1/2 BALL DRAW SHOT
The final direction corresponds to an angle of 90° compared to the axis of the cue and, a ball before the impact point.
Here is the demonstration on the table:
3/4 BALL DRAW SHOT
How to determine easily the 45 degree's final direction ?
Visualize this angle with precision, we proceed in 2 times:
1) to imagine a 4th ball representing the cue ball in contact with the played ball
2) to visualize the direction of the cue ball, look for a point at a distance "4th ball - cue ball" from the cue ball's center situated on a line perpendicular at the cue axis.
This is illustrated by the following video:
OTHER DRAW SHOT TRAJECTORIES
In practice, the real direction of the cue ball is not exactly one of the previous ones.
Here is a method to go in any direction:
* draw a line from where we want to go and the center of the played ball
* aim at the intersection of this line and the played ball's circumference
The following sketch illustrates these remarks:
This is also illustrated by the following video:
The follow shots are used to make the cue ball rolling ahead.
For that, we position the tip on the high part of the cue ball:
The gesture must be slow.
If we want to advance more, the gesture will be slow again and we put our hand at the end of the cue.
Full aim direction
We aim on the center of the 2nd ball.
The deviation is 0 ° ( Straight on )
Aiming 1/2 ball:
We aim at 1 radius from the center of the 2nd ball
The deviation is 37° compared to the axis of the cue
Aiming from 1/3 to 3/4 ball:
The final deviation is the practically the same when aiming 1/2 ball
Any direction' follow shot
This is a method for any direction with a follow shot:
* to draw a line from where we want to go and the center of the played ball
* to aim the imaginary point located at the intersection of this line with the back part of the the played ball circumference's
Here is a diagram illustrating these remarks:
This is illustrated in the following video:
The center spot of the cue ball is often used in carom billiard.
The tip is positioned on the equator part of the cue ball:
Aim the played ball full minus 1 or 2 mm
Direction 90 °( a right angle before the played ball )
Aiming at 1 radius from the center
Deviation 60 °
The video watches the right angle obtained by the ball before when we aim full minus 1 or 2 mm.
The angle showed does not seem to be a right angle because of the camera distortion.
HOW TO FIND THE CENTER'S HEIGHT
How to make a good hand bridge for a center shot ?
1) put the 2 balls close
2) the tip must touch the cue ball to the same height as the point of contact of the 2 balls
With attack at the center
Maxi deflection angle will be obtained with an aiming full minus 1 or 2 mm ( right angle ).
For an aimed specific quantity the trajectory of ball 1 will be a tangent at the ball 2 at the impact point.
If balls 1 and 2 are not near one from another, or if the shot is not strong enough, a rotation will be induced.
Instead of gliding on the table, the friction of the cloth will provoke a rotation onwards ( ahead shot ).
--> It will be difficult to control the final deflection in relation to the aiming axis.
This deflection will be less than the theoretical one.
If the shot is stronger than normal an explosion phenomenon will take place.
At the moment of the impact the ball 2 will throw off ball 1 to the side more stronger than normal.
--> It could be interesting to use this technical shot in order to obtain more final deflection.
The angle of ball 1/ball 2 after the shock is a 90' angle::