1. Bottom view of top of cage 1 - mark on other cage half explains which half we’re looking at 2 - Dents travel along a line of latitude of the ball spin, based on the expected tilted axis from upthrust - see next slide
Possible
exit
entry

2. View looking up at bottom of top cage
View looking up at bottom of top cage. Red arrows = normal contact angle angle and ball spin axis. Blue arrows = upthrust contact angle and ball spin axis.
Bottom of Inner Ring
(pushing ball into page during upthrust
Shaft Rot direction *
Spin axis
Spin axis
Top of Outer Ring
(stationary)
Lifting ball out of page
during upthrust
Contact angle
Contact angle
Shaft rot direction
CW from top
CCW from bottom
Cage movement