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About two black ages ago I came up with a mechanism to add steering to very small models, and I worked on two models based on it. I have never been able to finish them to my satisfaction, and I'm realizing the current black age I'm in will probably last until retirement, or at least until I get a bigger living space, so I'm posting what I have now. I should probably have posted about the mechanisms years ago, but I wanted to have some neat models to show off with it too so I never did. Last time I searched around the web for anyone else who had shown the mechanism off I didn't find anything, so I don't think it's a well known thing. Here's an album with pictures it this post: https://imgur.com/a/ixZOK0s Overview of the two mechanisms. Vertical and horizontal variants of the small mechanism on the left and bigger one on the right: Small mechanism with vertical axle: Same mechanism with horizontal axle: Here's the bigger mechanism with vertical axle: Here's a WIP wheeled excavator based on the smaller mechanism. The bottom right picture is another control scheme I was exploring. I'm mostly satisfied with the model, it's only the arm and bucket I don't like. Here's a bigger WIP model. This one uses very tightly packed pneumatics. It's missing the cab and arm, but I'm otherwise pretty happy with what I've got. I was never satisfied with the arms I managed to build. They were either too bulky or too fragile. This model feels very nice to roll around on the desk, it has some a weight and grounding that the smaller one lacks, and the turning is pretty satisfying too, even though it can't exactly turn on a dime. Lastly, here's a half scale model of the 8049. Lacking fenders, seat, lights and the trailer. I would like to get the two excavators finished one day so I can have them hanging out under my monitor, but my hobbies have shifted to electronics and plants, and I'm lacking in desk space anyway. Maybe one day though :-) Hopefully these mechanisms can help you in your builds! As a bonus, here's my collection of all technic excavators, except for the Liebherr, which I'm hoping to find used for cheap. Note the blue excavator from the 8888 idea book! If imgur decides to stop hosting the pictures, contact me on BL where I have the same username and I'll get them hosted somewhere else.
