pushrod

Noun

1. A rigid reciprocating rod that, by its movement, transmits force to actuate a mechanism.
   • The cam-within-a-cam concept has existed for decades, but perfecting it for production might just add another decade to the life of the pushrod engine. - 2007 January 14, Don Sherman, “Making Modern Horsepower the...

   1. (automotive) A rod in a piston engine that actuates rocker arms above the cylinder head.

   2. (cycling) A rod in an internal gear hub that actuates the shifting mechanism.

      • An internal-gear hub with a hollow axle may be re-oiled by removing the pushrod or indicator spindle and squirting oil into the end of the axle. - 2000, 2008, “Internal-Gear Hubs”, in Sheldon Brown's Bicycle Technical...
      • Push Rod (81.85 mm) for Axle Length 168 mm - 2018, “NEXUS 3-SPEED HUB w/Coaster Brake”, in Manuals & Technical Documents:

   3. (aviation) A rod used in the transmission of flight control inputs to an aircraft's control surfaces.

      • On 17 August 2005, a Saab 2000, at the ramp, with controls locked, was subjected to jet blast of around 126 kt (233 km/h) from a passing B747. This resulted in the bending of the left aileron control pushrod, causing it...