The new block works nicely. At 2 amps, the motor has some of the most torque I’ve seen yet. It was able to continue turning as I attempted to stop the rotor by dragging my finger along its top.
You may notice the wooden shaft collar above the Erector set rotor parts. This is meant to be a cheap and disposable way to permanently fix the 2mm shaft to the Erector set parts, which I don’t want to commit permanently to the project. Two Erector machine screws go up from the bottom of the rotor assembly, through the yellow plate and one of the silver crosspieces, and up into the wood. I used a 1/8″ drill bit to make the holes for these screws, and the holes took the threads from the screws really well.
Here’s the photo from tonight:
