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By ITAR - Dec. 31, 1969A Roman treadmill crane. The ancient romans used similar cranes to lift large stone blocks to construct their spectacular building projects. A person (or multiple people) would walk within the wheel and cause the crane to lift heavy loads using pullies to gain mechanical advantage.
This crane was made using the Wooden Plank Mold #220.
A 3/8" wooden dowel
1 small paperclip
1 large paperclip (for the boom anchors)
some 8mm thread for rope.
The statue base is from Gothic Arena Accessories mold #42.
The statue is a very old one that I had sitting around. It's made of lead so that should tell you how long I've had it. It was the heaviest miniature I could find.
The challenge: Make the crane work but still fit within the 12" X 12" base.
I wanted the crane to be roughly to 28mm scale so that meant it would be fairly large. I originally wanted to do a diaroma of the crane building a building but there wasn't going to be room on the base so I went with a statue instead.
The challenge: Make the wheel fit together and still be round.
I actually went through a couple wheels before I got it right. The first wheel was way to small for a figure to fit in so I had to scrap it and start over. I made the edges and the spokes as one piece then glued them to the center round hub to get it to come out with a minimal amount of sanding. I did have to sand the corners off the flat wood panels so they'd fit more seamlessly.
The boom of the crane can be raised or lowered by pulling the ropes through the loops at the back of the crane. The ropes are tied in a simple knot that's easy for me to undo so I can change the angle of the crane later if I want. Turnnig the wheel will raise or lower the pullies that support whatever is being lifted.
You can see a movie of the crane in operation here. It's in quicktime (.MOV) format.
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