Jimmy Struts - The Prototype leg

 

 

The above picture shows Jimmys prototype leg made from Lego.

The foot moves backward and frowards and the lever system keeps the foot at a constant height/level. The gear at the top is acting as a simple crank which moves the foot up and down. The cranks rise and fall is reduced by the lever system. The reduction of the foot's rise and fall is a ratio of the bottom connecting rod and the the top connecting rod of the X. For the final version of Jimmy we had the crank rise and fall at about 6mm which gave the foot rise and fall of about 2mm.

The Bare Chassis

 [ Jimmy Struts ]

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