Pedalling Efficiency Rig developed for cycling performance testing

The PER enables the measurement of rider input power and the comparison with output power at the dynamometer’s roller surface within a controlled environment. From this, SSEH said that an accurate comprehensive assessment of the mechanical losses of a bicycle can be created to ultimately measure a bike’s overall efficiency.

Rider input power measurements are taken from the pedals; by isolating left and right-hand inputs and capturing force vectors throughout the rotation, the rig is said to evaluate the power and efficiency of different pedalling techniques. The data can then be used by cyclists and coaches to help improve performance levels.

SSEH said that the PER is also able to test the bicycle as a complete system, accounting for factors including rolling resistance, component stiffness, and chain friction.

By measuring all the components simultaneously, the rig can provide an analysis of their interplay, presenting data that SSEH hopes can guide equipment manufacturers in designing more efficient and responsive bicycles.