Learn how to choose between linear and equal percentage trim for air control valves based on pressure drop, control objectives, and valve characteristics.

After just a few months of work, a complete newcomer to the world of sphere packing has solved one of its biggest open problems.

It’s not yet clear how Trump will be treated for the condition, which was revealed on Thursday — but here’s what you need to ...

Muc-Off adds 60, 70, and 80 mm long versions of its patent-pending Big Bore Lite Tubeless Valves for deeper road and gravel wheels.

According to Air Flow Research, bronze guides have a longer life expectancy than OEM guides, and will work better in ...

Valve stem seals are important to control consumption of lubricating oil for engines and to prevent an air pollution problem by unclean exhaust. It is required for valve stem seals to have stable ...

Developed with gravel racers and refined in the wind tunnel, Apidura now offers a nearly universal fit Aero System pair of compact bikepacking bags that promise to make your bike faster. 5 watts saved ...

Stem-cutting dipping in insecticides and biopesticide application for the control of Bemisia tabaci whitefly in cassava Provisionally accepted ...

News about Barack Obama, including commentary and archival articles published in The New York Times.