JUGS Sports Curveball (2 wheel) Pitching Machine - Manual (Page 24)

W
ARNING:
Do
not
use
any
speed-dial
setting
within
this
light
shaded
area.
They
may
result
in
knuckleballs,
which
can
be
dangerous
and
should
not
be
thrown.
LEfT WHEEL DIAL SETTING
22
Example:
If
the
left
wheel
is
set
at
65
and
the
right
wheel
is
set
at
100,
the
machine
will
throw
at
approximately
89
mph.
Figure
7
Approximate
Speed,
in
miles
per
hour
, of
the
JUGS
Curveball
Pitching
Machines