4Iiii Innovations Inc.

Hamid Ebrahimi Kahaki

Kipling William Fyfe

Keith Joseph Wakeham

Billy Cheuk Wai Chan

David McNab

Brandon Riches

Keith Wakeham

Dave Mcnab

A crank measurement system includes four bend-sensing strain gauges located on one surface of a crank and oriented parallel to a neutral axis of the crank to sense bend strain induced in the crank. Two of the bend-sensing strain gauges are located above the neutral axis, and the other two bend-sensing strain gauges are located below the neutral axis. The system also includes two shear-sensing strain gauges located on the one surface and oriented to sense shear strain induced in the crank. The shear-sensing strain gauges are located on opposite sides of the neutral axis. The system may also include up to four axial-sensing strain gauges located on the one surface and oriented to sense axial strain induced in the crank. An electronics module receives strain data from the strain gauges, and determines from the strain data one or more of force, torque, and power applied to the crank.

Crank measurement system with improved strain gauge installation

Growing community of inventors

Calgary, Canada

Hamid Ebrahimi Kahaki