Sellier machine...

[F6FLT]

.....as a proposal , at : http://moteur-hackenberger.over-blog.com/article-la-machine-de-sellier-42901661.html

fr ----
"Le couple appliqué à la manivelle est d'autant moins important que le contact bras/manivelle est éloigné de l'axe d'articulation du bras, ce qui devrait faire qu'on récupère un excédent d'énergie, théoriquement, du moins!"

en ----
"The torque applied to the crank is less important when the arm/crank contact point is far from the axis of articulation of the arm, which should result in an excess of energy being recovered, theoretically at least!"

It is a great confusion. Torque is the product of force by the distance between its point of application and the axis of rotation. Energy is the product of force by displacement. The torque is less important, true, but the displacement is proportionally longer, the energy is conserved, theoretically at least!