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  1. R

    Insulation class is not a quality grade. It is a thermal budget, and most machines spend it before the first hot afternoon.

    Engineers read a high class as a badge of durability. It is not. The class describes how long the insulation survives at a given hot-spot temperature, not how hot the winding will run in your enclosure, at your duty cycle, in July. Two machines can carry the same class and live entirely...
  2. R

    What is the first sign you notice when a servo is starting to fade?

    A steering servo on a 1/10 touring car has about eight minutes to prove itself. By minute six the tyre is gone, the corner is tighter, and the servo is hot enough that its torque is no longer the number on the box. Industrial sizing has the same trap, just on a slower clock. A servo that holds...
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