Ben on his own this time, rides around the clock on his Unicycle. After their stint at the Gym I thought I would try to get some more movement into the character, so the idea formed of movement along a circular path would be straight forward to achieve but a bit boring, so I had him move a minute hand of a clock around a Dial and introduced the gears to turn the hour hand as well. He can now be used to teach a child to tell the time as well as providing some amusement.
A 3:1 ratio pair of Bevel gears drive the Unicycle around and the friction between the wheel and the top face of the box drives the legs around on the pedals.
Printer: Zortrax M200
Resolution: 0.19 and .09
You will need 1 of each STL part except for the following:-
Arm upper 2
Arm Lower 2
Box side 3
You will need some extra components to complete the build :-
3 piece Ø 2 mm steel rod 52 mm long
2 piece Ø 2 mm steel rod 26 mm long
2 piece Ø 2 mm steel rod 20 mm long
3 piece Ø 2 mm steel rod 15 mm long
5 piece Ø 2 mm steel rod 10 mm long
Acetone to solvent bond some of the parts together.
Drills Ø2 mm for the holes that need to be a tight fit.
Drills Ø2.2 mm for the holes that need to be a loose fit.
Automata 4 STL files can be downloaded here.
Use the drawings opposite as a guide for where the components fit into the assembly.