Mamba Monster Motor Malfunction?

[What's_nitro?]

It's magnetic drag caused by the strong rotor magnets passing by the steel laminations in the stator windings. It isn't necessarily because they are higher quality than other motors, just a different design. Lehner, for example, does not use steel laminations in the stator, and so their motors all spin freely. All Neu motors (Castle motors are based on them) will have that "notchy" feeling. The smaller Castle motors also do not have steel in the stator, so they are smooth.

The Neu-based Castle motors have 12 slots in the steel stator and 4 poles on the magnetic rotor.