I took apart my Neu 1512 Motor today and when I removed the end bell there was two gold spacers sitting on the shaft (1 short one and 1 long one) Does it matter which order these two spacers go on the shaft?
When i changed the bearings on my Neu 1512 i also had one longer and one shorter spacer. As i drove my motor in wet conditions i had some marks on my motor shafts.
With mine: the longer spacer is used between the rear bearing and rotor. And the shorter one goes on the opposite side.
Those are kontronik silver plugs soldered on the motor wires (comes with the kontronik line of ESC). It's a Neu 1512/2Y (1400kv) which i use with 8-10s A123 ... low amp draw.