After i examined the jumping legs of a Mantis, i reconstructed the form and the mechanical behavior of the junction. The force was created with a high strength, flexible steel 1 mm diameter steel wire.
Lost and damaged parts never found, the new drive chains are different from the original. New wheel, new console, new motor and gear. The exact original speed of the crane was measured by stopwatch and rotates what we could see when the other crane was moving. All the two axis drive was redesigned and changed.