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Development of an automatic bicycle transmission for e-bikes

At a glance

  • Project leader : Prof. Adrian Fassbind
  • Co-project leader : Simon Faneco
  • Project team : Steven Ammann, Anton Höller
  • Project budget : CHF 134'387
  • Project status : completed
  • Funding partner : Innosuisse (Innovationsprojekt / Projekt Nr. 43593.1 IP-ENG)
  • Contact person : Adrian Fassbind


ratioX is an automatic bicycle transmission based on continuously variable transmission (CVT- technology). The ZHAW has been commissioned to optimise and further develop the functional model as part of an Innosuisse project. The focus is on simulations and calculations. The development is to be verified with a prototype.