Here's the base of the U7 motor, from where we can see that the spindle to which the rotor is attached (the cylinder or 'out-runner' at left which does the turning) extends beyond the fixed base... guaranteeing that as you tighten the motor in place, it acts as a brake preventing the motor from operating.
Larger motors from the same company do not include this feature, and I guess at the quarterly sales meets that there's a bonus for shifting the stock on the unsuspecting.
A suitable rename of the U7 as a part of this effort might perhaps be the FU7.
Why am I doing this?
