[jstarks]

I think Spintronics resistors will resist motion with a force proportional to rotational speed, which I think follows from the resistance coming from oil in the bearings. So the torque will be the same for both resistors (since the battery applies constant torque), but the speed at which the resistors apply this torque will be different by a factor of two.

[kayson]

So you're saying the bearing friction is twice as large in the bigger resistor but the speed is half, resulting the same torque? This seems like the simplest explanation, and what my mind went to first, but I couldn't find any resources that describe this behavior mathematically.

I'm also curious what defines the steady state speed.