Under Wang Ye's furious output, each tooth of the front chainring endured nearly extreme pressure.
The friction between the gears and the chain even produced a strong buzzing sound.
Yet, Wang Ye's pedaling frequency remained at a relatively low rate, and the efficiency of increasing riding speed was also very low. If you understand it using the principle of leverage, you can simplify the gears into a lever, where the contact point of the gear is the lever's endpoint, and the gear's center is the origin. The longer leverage of larger gears makes them easier to rotate with external force, but conversely, using large gears to drive other gears requires more effort.
