Thanks... I think I'm in full agreement with your reasoning.
It doesn't make sense to under design the choke unless you are using it as a protective component.
So lets assume two cases:
1) The choke is properly designed to take the 7.5 amps. The temporary stall condition then smokes the windings first. This shorts the armature and leads to higher currents. The higher current eventually smokes more winding and eventually smokes the choke. The motor will have residual degraded torque if the choke didn't self destruct open but the motor will not be usable for a minibot design.
2) The choke is undersigned and opens before the motor windings smoke. Then it protects the motor windings and can be replaced to restore the motor to original specs. But.... the motor will not have residual torque after this event. So..... This doesn't fit any of my motors.
3) Maybe something in between where either the choke or winding smoke first. If the choke just smokes and doesn't open , then its resistance will lower and the motor current will increase and probably lead to more power in the motor. This is probably a good thing unless the stall persists... then the extra power will smoke the motor faster.
4)???
Bottom line, smoke a motor and if it still operates...... use it for mini fan motor and not a minibot.
I hope someone can post a counter to this reasoning
