Towels, of course, are another option, and almost everyone riding indoors will use one, as you can place these over the bars ...

Abstract: This paper reports on the design, optimization, and evaluation of a multi-phase variable reluctance energy harvester (MP-VREH) for integration into a smart bearing hub unit of large ...

Several spots on your bike use bearings to rotate smoothly, including your headset, bottom bracket, hubs, and suspension linkages on mountain ... it might be the pedals themselves. To remedy this, ...