Figure 2b:
Softball leg installation
generate enough squeezing force on the ball, and pitches will be too
slow, without enough spin. As a general rule, when the gap is correct,
you should be able to feed a ball through an unpowered machine by
rotating the wheels by hand with a moderate effort.
Each motor & wheel assembly has two profiled blocks that interlock with
profiled pockets in the frame. There are 11 possible locations. By
counting the number of empty notches on either side of the blocks, you
