Rompecerebros
#602233Fecha: 21-02-2014
en , Córdoba, Argentina
A ver si existe data de esto!?
Dejo un comentario del foro:
Basically the same theory as the eliptical Biopace rings of the late 80's early 90s. But this one has a lever that rotates the clocking to change the power stroke for power or speed... LOL. I've never seen another, but it appears to be from the late 40s or 50s.