At lower moisture contents, the grinding
was easier and faster than at higher moisture levels, as was
expected. The continued presence of material to be ground
in the grinding chamber for the higher-moisture feedstocks
reduced the speed of the blades due to loading and friction.
During the initialization of grinding, the speed was much
lower due to the rotor overcoming inertia and from the
presence of higher quantities of material in the grinding
chamber. However, the rotor shaft quickly picked up speed
and maintained constant speed over time. Comparing corn
and corncobs, the speed of the rotor was lower during the
grinding of cobs than corn. This may be due to the higher