Glossary · equipment
Rotor
The spinning part of the wheel that carries the pockets.
In context
Spins at roughly 0.3–0.5 revolutions a second, opposite to the ballequipmentBallThe small ball launched along the track against the rotor. Modern balls are ivorine or Teflon, 18–21 mm.Read full →. The pocketequipmentPocketOne of the 37 numbered compartments on the rotor. Also: slot, cup.Read full → under the drop point depends on rotor phase at that instant.
Did you know
Rotors are balanced like car wheels, with small weights, to a tolerance that keeps any pocket from being favored by gravity.