The proportional relationship of two different sized gears that are in contact with each other.
Gear train
Series of gears that can be meshed together in different combinations to change the mechanical advantage between the input and output shafts.
Gearbox
The enclosure that surrounds the gear train.
Geared reduction
Many power tools, like drills and saws, require specific speeds for different work loads. Slower speeds are attained by adding gears between the motor's armature and the output shaft or arbor. There are three main types of geared reduction systems.
Gears
gears increase or reduce the power developed by the motor into usable force. Helical gears, planetary gears and spur gears are the most common types of gears.
Gearshift
Mechanism in a vehicle that selects the gears in the transmission.
Gearwheel
A gear.
Gel
Top coat of resin when forming a fiberglass shape. The resin is applied in a layering of fiberglass mat and resin in a mold.
Gel coat
Final finish, which is used on many plastic fixtures since it can be easily repaired when it is scratched.
