A gear is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part in order to transmit torque. Two or more gears working in tandem are called a transmission and can produce a mechanical advantage through a gear ratio and thus may be considered a simple machine.
The state of being full of life or vigor; liveliness
quality of being active or spirited or alive and vigorous
the condition of living or the state of being alive; "while there's life there's hope"; "life depends on many chemical and physical processes"
The technique of photographing successive drawings or positions of puppets or models to create an illusion of movement when the movie is shown as a sequence
the property of being able to survive and grow; "the vitality of a seed"
The state of being alive
An instance of moving something or being moved by or as if by such a machine
An active transport mechanism in living cells by which specific ions are moved through the cell membrane against a concentration gradient
A mechanical device using suction or pressure to raise or move liquids, compress gases, or force air into inflatable objects such as tires
operate like a pump; move up and down, like a handle or a pedal; "pump the gas pedal"
a mechanical device that moves fluid or gas by pressure or suction
deliver forth; "pump bullets into the dummy"
sachs automatic driving rings
different. broken 1980 blue automatic and replacement
Old driving ring inside the hub shell. You can't tell, but they mesh together perfectly.
sachs automatic driving rings
different. broken 1980 blue automatic and replacement.
Old driving ring with ramped knobs. slightly different spacing, too, I think.