The spokes are the thin metal rods that transfer part of the rider's weight onto the much thicker metal rim, which in turn passes that load through the rubber tire onto the roadway. They are always in tension (being stretched out) and never in compression (being pushed in), and that is why the rods can be so slender yet will not bend out of shape. It is very similar to the cables of a suspension bridge and they are a major factor in the design of the lightweight modern bicycle.
You must adjust all the spokes to have equal tension in order to keep the front fork centered precisely on the wheel, or you'll have a wobbly and dangerous ride.
You must adjust all the spokes to have equal tension in order to keep the front fork centered precisely on the wheel, or you'll have a wobbly and dangerous ride.