Visual ballistics
Predicting the drop sector by eye, from the ball’s and rotor’s speeds, without a device.
In context
Practitioners time revolutions mentally and bet a sectorwheelSectorA contiguous arc of pockets on the wheel, as distinct from a group on the layout.Read full → late in the spin. Any real edge is small, requires a tolerant table, and vanishes under a fixed betting windowliveBetting windowThe period in a live round during which bets are accepted, timed by the game server and shown as a countdown.Read full →.
Casinos counter it the simple way: call no more betsprocedureNo more betsThe dealer’s call (or the on-screen prompt) that closes betting. Chips may no longer be placed, moved or removed.Read full → earlier. Live studios made it impossible by closing bets on the server before the ballequipmentBallThe small ball launched along the track against the rotor. Modern balls are ivorine or Teflon, 18–21 mm.Read full → slows.