The turning motor for a sportsman size incubator is Dayton .3 amp 1 RPM #LR31482. For a larger incubator go up in size accordingly. You will also need a 1 RPH clock motor and these two microswitches W W Grainger #s 6X291 and 6X293. For the cam and arm for turning I usually machine it from steel solid stock. The length of the arm will depend on the width of the incubator trays. For the cam on the clock motor use phenolic or plastic, much easier to machine. Set the turning arm up with two set screws also because 2 or 3 hundred eggs are heavy and a single set screw will sometimes spin off the flat on the motor shaft.
