Close inspection of the photographs may detect some Steel Tec , Gilbert Erector and even Marklin parts being used. I am not a purist.

Site by David Lawrence - South Carolina

Project title .............. Four legged robot This site is being prepared while the project is under way. I have no way of knowing if the concept will work! ........It is therefor my first 'reality site'. Stage 5

ALTERATION CARRIED OUT SINCE STAGE 4 The centre of gravity shift platform previously on the top with its pivoted lever actuation system has been removed and a vertical weight carrying trolley has been built on the rear face of the unit. Drive to this is via a centrally positioned MO motor with worm output , flexible coupling to a short belt drive crossing to a long threaded rod from which the trolley is linked by a coupling.

This photograph shows a horizontal view of the new weight shifting trolley running along as 25-hole angle girder on which 2 x 1/2" pulleys roll and guided at the top by a single 1" pulley beteen 2 x 25-hole angle girders, clearly seen in the photo above.