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Some training balls don’t help find where to hit cue ball to add spin
The miscue limit is the distance from cue-ball center that a player can hit without miscuing. The distance is generally accepted to be one-half a billiard-ball radius, 9/16" (14.3mm) or 0.5R. Some billiard-ball stripes are that width. For beginners, a more practical maximum may be 0.4 to 0.45R. DrDave found a maximum miscue limit of 0.55R.
The Rempe training ball shows an area to apply spin that has a miscue limit of 0.7R. It instructs players hit the Rempe ball and to note chalk marks to determine where spin was applied. That's a disaster, though, for beginners who would miscue hitting the ball at about 0.5R length and for experienced players above 0.55R. Rempe's instructions should state that miscues are likely cue hits ball and smudges ball at markings above 3.2 (that is 0.5R).
The CueSight Training ball instructs players to “stay inside the white circle and you will not miscue”. That white circle can mean hitting the cue ball at 0.61R — impossible to reach for beginners or DrDave. It should state that players should hit the ball within 0.5R --- that is about 3mm inside the white circle (this is the outer-most small circle --- see photo below).
The Elephant training ball is fine --- it has a red circle that corresponds to a 0.5R. Its' area for applying spin is much smaller than CueSight's or Rempe's. I, a beginner, miscued hitting its red circle, but that’s me and not Elephant Ball's fault.
Experienced players --- not beginners --- know some of this. DrDave has videos of miscues and used a Rempe ball showing a miscue occurred at a Rempe marking of 4 (0.6R; see photo below). When YouTuber Ron the Pool Student indicates where to hit on a Rempe ball, he advises, for example, to hit low right spin at a Rempe 3 marking (0.5R; figuring contact would occur at one side of cue tip; see photo below).
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The miscue limit is the distance from cue-ball center that a player can hit without miscuing. The distance is generally accepted to be one-half a billiard-ball radius, 9/16" (14.3mm) or 0.5R. Some billiard-ball stripes are that width. For beginners, a more practical maximum may be 0.4 to 0.45R. DrDave found a maximum miscue limit of 0.55R.
The Rempe training ball shows an area to apply spin that has a miscue limit of 0.7R. It instructs players hit the Rempe ball and to note chalk marks to determine where spin was applied. That's a disaster, though, for beginners who would miscue hitting the ball at about 0.5R length and for experienced players above 0.55R. Rempe's instructions should state that miscues are likely cue hits ball and smudges ball at markings above 3.2 (that is 0.5R).
The CueSight Training ball instructs players to “stay inside the white circle and you will not miscue”. That white circle can mean hitting the cue ball at 0.61R — impossible to reach for beginners or DrDave. It should state that players should hit the ball within 0.5R --- that is about 3mm inside the white circle (this is the outer-most small circle --- see photo below).
The Elephant training ball is fine --- it has a red circle that corresponds to a 0.5R. Its' area for applying spin is much smaller than CueSight's or Rempe's. I, a beginner, miscued hitting its red circle, but that’s me and not Elephant Ball's fault.
Experienced players --- not beginners --- know some of this. DrDave has videos of miscues and used a Rempe ball showing a miscue occurred at a Rempe marking of 4 (0.6R; see photo below). When YouTuber Ron the Pool Student indicates where to hit on a Rempe ball, he advises, for example, to hit low right spin at a Rempe 3 marking (0.5R; figuring contact would occur at one side of cue tip; see photo below).
