A senior running editor and veteran of 26 marathons shares the best piece of marathon advice he knows as it relates to the ...

Admit it, before a run you waste time fussing over your outfit. Does this top go with these shorts? Do those Union Jack shorts go with anything? To keep these fashion dilemmas to a minimum, buy ...

This article was updated Feb. 28, 2023. It was originally published March 1, 2000. Planetary gears can supply high levels of torque and high-speed reduction. They are also relatively compact compared ...

Different gears like spur, bevel, worm and wormwheel, rack and pinion, meshed gears, and threaded bars serve various purposes. When selecting a gear system, consider speed, direction, force, space, ...

The flames die down. The sirens fade. Firefighters peel off their gear, thinking the danger has passed. But in the quiet ...

Plastic gearing has been increasing in usage as designers better understand their benefits and limitations. These gears can be produced by hobbing or stamping or, for large-volume runs, by injection ...