CHRYSADEV has surrounded itself with the best talents in mechatronics – a combination of mechanics, materials, electronics, automation, and real-time information technology – to design innovative products that are practical, easy to use, and perfectly adapted to all kinds of sailing.

The key figures involved in creating eWINCHER :

Raphaël Bourret and Bruno Rabu
Raphaël Bourret and Bruno Rabu

Overall design

  • Bruno RABU
  • Raphaël BOURRET

Electronic solutions were developed with ONWI:

  • Hervé ROUILLE
  • Romain LAMOTTE
    Hervé ROUILLE and Romain LAMOTTE,ONWI company
    Hervé ROUILLE and Romain LAMOTTE

Mechanical production was supported by AMGE:

  • Laurent PERONNET
Stéphane Palix
Stéphane Palix

Protection of Intellectual Property was ensured by LAURENT ET CHARRAS:

  • Stéphane PALIX

Market research was conducted by EM Lyon

Finite-element structural modeling was performed by Centrale Lyon


Bruno Rabu and ewincher, power assisted winch handle on his sailboat, photo Serge Briez, copyright Cap meditations for Chrysadev ,
Bruno Rabu

After having worked for more than 20 years in high-level positions for Lyon-based giant Merial, Bruno Rabu experienced health problems that forced him to make changes in his professional life as well as his leisure activities and passions.

“I loved practicing sports, and there were many things I just couldn’t do anymore. I told myself I had to find a solution that would allow me to keep sailing. I looked at what was out there, and I couldn’t find anything I was happy with. That was the starting point,” he explains.

In 2016, after close to 3 years of research and development, Chrysadev unveiled its “technological gem,” for which 3 patents have been filed: the first power-assisted and connected winch handle.

Logo ewincher by Chrysadev

“My objective is to develop and market a range of innovative technological products that will make sailing easier without altering the experience, in order to maintain the thrill and pleasure of being out on the water.”