Bola-Efecto: RodadaSistemas Bola-Efecto 4 — Rodadas

Cushion orderL→S→LDifficulty PRO🖨 Drill cards ✓ Exam on this system PRO 📐 Measure on your table PRO

ScalesReference linePath

Reference position

SpinNot specified

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Ball fractionNot specified

SpeedNot specified

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Introductory diagram: the cue ball hits ball 2 and travels right long cushion → top short cushion → left long cushion to ball 3 in the bottom-right corner. No values are given in this introductory example.

Everyone knows how to play these common positions with the traditional systems. The Bola-Efecto method lets you play them with different combinations of ball fraction and spin; this gives you better control over where ball 2 ends up and lets you avoid the kiss more precisely.

When? When, after hitting ball 2, the cue ball follows the path right long cushion → top short cushion → left long cushion and comes down into the lower part of the table along a lane (calle) (rodada).

✓ 4/4 examples verified by the formula

Calculate

Lane = 6 − Ball 2 (long cushion) + Ball 2 (short cushion) + Offset; then the lane is changed with steps of spin and ball fraction

Ball 2 position (right long cushion)

Ball 2 position (top short cushion)

Offset (shift)

Spin step

Ball fraction (thickness)

Lane3

Reference lane (6 − larga + corta + offset)3
Lane3

✓ Example: Rodada position

Voice coach

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Watch outAvoid going to extremes with maximum spin and minimum ball fraction as far as possible: there is a risk of miscuing or missing the ball.

Editor's note · Ball fraction and spin stepsUncertain reading: in the spin diagram there are two intermediate marks, between S and S−1 and between S−1 and S−2; their values are not certain (they may be half steps). The S−1 position was verified against the S−1 symbol in the examples.

Editor's noteEditor's note: The "4" in the title (Sistemas Bola-Efecto 4) is most likely the section/family number in the series: the short cabaña counts as the "first family" of Bola-Efecto positions. The meaning of this number is not certain.