Brevet Bike bags

“Crank length is part of a system of hinges and levers that must operate in the larger context of an individual’s biomechanics. Longer cranks increased flexion and the range of movement required at both the hip and knee. Where there is indecision, cyclists should opt for a shorter crank to reduce the risk of injury….

Compared to the earliest bikes, today’s road bikes represent a quantum leap in both design and engineering. How much room is there for improvement? CTech editor Matt Wikstrom investigates.