Increasing the pedal crank arm length on a bicycle affects torque and pedaling efficiency. A longer crank can produce more torque with the same force, but it may also require more distance to complete a pedal stroke, potentially leading to slower cadence. Some argue that shorter cranks allow for higher RPMs, but this does not necessarily equate to greater power output. The discussion emphasizes the need to consider individual rider geometry and preferences when determining optimal crank length. Ultimately, the relationship between crank length, torque, and rider efficiency remains complex and varies based on specific cycling contexts.
