Context: Because the rotor is much lighter in weight (mass) than a conventional rotor formed from copper windings on steel laminations, the rotor can accelerate much more rapidly, often achieving a mechanical time constant under one ms. This is especially true if the windings use aluminum rather than the heavier copper. But because there is no metal mass in the rotor to act as a heat sink, even small coreless motors must often be cooled by forced air. Overheating might be an issue for coreless DC motor designs.

Question: What is a likely problem of coreless DC motors?
Answer: Overheating

Question: How does a coreless rotor compare to traditional rotors in terms of weight?
Answer: lighter

Question: What advantage does a coreless rotor have over traditional variants?
Answer: accelerate much more rapidly

Question: How is a coreless motor cooled?
Answer: forced air

Question: The lack of a metal mass in the core causes what function to be absent?
Answer: heat sink

Question: What is a likely problem of coreless RC motors?
Answer: Unanswerable

Question: How does a coreless rotor not compare to traditional rotors in terms of weight?
Answer: Unanswerable

Question: What advantage doesn't a coreless rotor have over traditional variants?
Answer: Unanswerable

Question:  How is a coreless motor warmed?
Answer: Unanswerable

Question: The surplus of a metal mass in the core causes what function to be absent?
Answer: Unanswerable