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direct drive


a transfer of energy or power straight from the engine crankshaft or motor shaft to the prop, without a clutch


A conventional motor has direct drive.'s 21st Century Lexicon
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Examples from the Web for direct drive
Historical Examples
  • What engineers call a "direct drive" is substituted in its place.

  • The change from the direct drive to gear drive, or vice versa, can be accomplished in approximately one hour.

    Aviation Engines

    Victor Wilfred Pag
  • In case of the direct drive a stub shaft is fastened direct to the crank-shaft and is fitted with a double thrust bearing.

    Aviation Engines

    Victor Wilfred Pag
  • The advantages of direct drive are so many that it should be used wherever possible.

    Electricity for the farm Frederick Irving Anderson
  • When direct drive cannot be had, a belt must be used, either from a main shaft, or a countershaft.

    Electricity for the farm Frederick Irving Anderson
  • Standard practice in new construction calls for holding speed by direct drive from a specially-wound ehrenhafter.

    The Syndic C.M. Kornbluth
  • But the man did not hear him, for he was yanking into place the lever that enabled him to run on direct drive for fourth speed.

  • The construction of the motor is such as to permit of the application of a direct drive.

    Aviation Engines

    Victor Wilfred Pag

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