What’s more, the chain and sprockets will eventually need replacing as the chain stretches and the sprocket teeth wear, particularly if neglected and not maintained properly, and especially on ...

Properly lubing a bicycle chain is surprisingly tricky ... The 3D-printed tool has a toothed wheel—James calls it a “sprocket ...

They use a chain to connect the gears. When you turn the pedals, the force turns the larger gear. This then turns the smaller gear, which rotates much more quickly on the back wheel, making the ...