“I wasn't sure how these worked at first. Once you know its 90 degrees for off, 0 degrees for full speed one way, and 180 degrees for full speed the other way, it's really super easy to control.
They are more powerful that you would think for the size, a lot more.
After leaving it running for a while, even with no load, it became warm, but never hot.
They are not silent, I guess it's the gearing; not a terrific problem, but it would be annoying if you wanted it to build then into a bedside clock, as a silly example.”