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  2. Pneumatic valve springs - Wikipedia

    en.wikipedia.org/wiki/Pneumatic_valve_springs

    Pneumatic valve springs are also found in several Moto GP motorcycle engines, debuting in 2002 with the Aprilia RS Cube. In 2005, Team Roberts was the first to use pneumatic valves full-time in their uncompetitive KTM powered bike. Today, almost all of the MotoGP teams use pneumatic valve technology on their bikes, including Yamaha, Suzuki and ...

  3. Formula One engines - Wikipedia

    en.wikipedia.org/wiki/Formula_One_engines

    They were replaced by pneumatic valve springs introduced by Renault in 1986, [6] [7] which inherently have a rising rate (progressive rate) that allowed them to have an extremely high spring rate at larger valve strokes without much increasing the driving power requirements at smaller strokes, thus lowering the overall power loss. Since the ...

  4. Judd (engine) - Wikipedia

    en.wikipedia.org/wiki/Judd_(engine)

    Judd is a brand of racing car engines built by Engine Developments Ltd., a company founded in 1971 by John Judd and Jack Brabham in Rugby, Warwickshire, England.Engine Developments was intended to build engines for Brabham's racing efforts, and became one of the first firms authorised by Cosworth to maintain and rebuild its DFV engines, but has since expanded into various areas of motorsport.

  5. Ford-Cosworth HB engine - Wikipedia

    en.wikipedia.org/wiki/Ford-Cosworth_HB_engine

    The HB VI was developed at the end of 1991, but only appeared at the beginning of the 1992 season. A new feature here was semi-pneumatic valve control, in which the valves were reset using air pressure. This eliminated the need for valve springs. Renault already had a comparable system in operation on its ten-cylinder engine.

  6. Cosworth DFV - Wikipedia

    en.wikipedia.org/wiki/Cosworth_DFV

    The DFV is an internal combustion engine that was originally produced by Cosworth for Formula One motor racing.The name is an abbreviation of Double Four Valve, the engine being a V8 development of the earlier four-cylinder FVA, which had four valves per cylinder.

  7. Google pulls McDonald's negative reviews over arrest in ...

    www.aol.com/news/google-pulls-mcdonalds-negative...

    Google on Monday removed derogatory reviews about McDonald's after the suspect in the killing of UnitedHealth executive Brian Thompson was arrested at its restaurant in Altoona, Pennsylvania ...