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OhGizmo!: OhGizmo! » Archive » The Hettlage Drive Puts Belts On Bikes

  • nar · 3 years ago
    This is great. I always thought that there should be a bike that shifts automatically to keep a constant strain on the legs. This is a great step in this direction - al is needed in some electronic control to vary the diameter of the rear cog as a funtion of belt strain. Maybe the belt can have a strain sensor inserted into it.