This lesson will explain how the use of english affects the angle at which the object ball banks off the cushion. The first part of this lesson will be discussing the effects of inside english.
Refer to the Figure 1. The illustration shows the cue ball being hit with inside english. When the cue ball contacts the object ball, a transfer of spin is applied on the object ball. The spin on the object ball is the reverse from that of the cue ball, therefore the object ball now carries “outside” english. You have learned from the lesson about position play that reverse english decreases the angle of the ball off the cushion.
In Figure 1, the white line indicates the normal path of the ball when no english is applied on the cue ball and the correct amount of speed is also applied. This is “angle in equals angle out” as discussed in the previous lesson on bank shots. The black line indicates the path of the object ball when inside english is applied on the cue ball causing a transfer of spin to the object ball that is opposite the spin of the cue ball. This opposite spin on the object ball then causes a decrease in the angle of bank of the object ball off the cushion.
Study this illustration carefully and try it a few times and you will start to get a feel of how the balls reacts using inside english on the cue ball at different stroke speeds.
USING OUTSIDE ENGLISH
This next section will explain the effects of using outside english on the cue ball. As you may have already guessed, this effects will be exactly opposite from the effects discussed in the previous section.
In Figure 2, the cue ball is hit with outside english. When the cue ball contacts the object ball a transfer of spin to the object ball takes place. The spin of the object ball is opposite from that of the cue ball therefore “inside” english will be applied on the object ball and as expected “inside english” on the object ball increases the angle at which the object ball banks off the cushion. Again, the white line indicates the normal path of the object ball if the cue ball is hit without english at the right amount of speed.
One thing to keep in mind is that the effects of spin on the object ball is still dependent on the speed at which the object ball bounces off the cushion. The effects of spin on the object ball decreases at higher speeds. At certain speeds, the effect of spin on the object ball is virtually non-existent and is overshadowed by the effects of speed. For example, at a soft or slow speed on a object ball having inside english, the angle of the bank off the cushion will increase a lot more. At very strong or hard speed, the effects of spin on the object ball is almost unnoticeable as the effects of speed cancels out the effects of spin on the object ball. Take a few hours to practice banks shots using inside and outside english on the cue ball at different speeds and you will understand better what I mean.