With the belt removed, does the Y motor shaft spin freely?
Not sure what you mean exactly so I'll give multiple answers:
- The motor shaft turns freely if there is nothing connected.
- The motor shaft gives resistance when it's in IDLE 1500mA 30% idle percentage. If nothing is connected to the motor. However it's fairly easy to push through compared to any other motor of the same type.
- The belt is running on the motor shaft. I'll explain my current setup. With some images: