Cessna172
Second Officer
United States
Offline
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In my opinion, Calibration has nothing to do with the physical ability of the motors to spin freely when the phantom is turned off.
The bottom line here is that you consider one motor significantly stiffer (harder to turn) than the others.
This is abnormal and I would consider this a problem.
All motors should spin freely and equally. It is possible that at some point a long strand of hair became wrapped around the shaft. Or there could be an internal problem with the motor itself.
In any event, if you are easily detecting a significant difference in the ability of one motor to spin compared to the others I would have that corrected.
Another way you can determine the extent of the problem is by feeling the motors immediately after a flight or by taking their temperature with a laser thermometer. If that motor (or any motor) is significantly warmer than the others, or if any motor is hot to the touch while the others are not, that might indicate a motor with too much internal resistance. If the temperatures are all about the same after flight, then I would not worry too much. I would just check it periodically. What could cause that condition? If one or more of the magnets was slightly closer to the armature than the others this could occur.
Yes, you can replace a motor yourself. But if it has warranty, and you can send it to an authorized repair center, that is better imo. |
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