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crank

crank

[krangk]
crank, mechanical linkage consisting of a bar attached to a pivot at one of its ends in such a way that it is capable of rotating through a complete circle about the pivot. One of the principal uses of a crank is to turn reciprocating, or back and forth, motion into rotary motion or vice versa. A bell crank is one designed to change the direction of a linear motion.

Crank may refer to:

Mathematics

  • Crank conjecture, a term coined by Freeman Dyson to explain congruence patterns in integer partitions.
  • Crank, a college slang term for a numerologist or a practitioner of pseudomathematics.

Mechanics

  • Crank, in mechanical engineering, a bent portion of an axle, or shaft, or an arm keyed at right angles to the end of a shaft, by which motion is imparted to or received from it
  • Crankshaft, the part of a piston engine which translates reciprocating linear piston motion into rotation
  • Crankset, the component of a bicycle drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain, which in turn drives the rear wheel

People

Places

Popular culture

Slang

  • Crank, a disparaging term for a person who holds unorthodox opinions
  • Crank calls, a term for false telephone calls made to strangers
  • Crank, a slang term for the powdered form of the recreational drugs methamphetamine or amphetamine

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