Air raid sirens have an important job to do, and have been a critical piece of public safety infrastructure in times of geopolitical turmoil. They sound quite unlike anything else, by virtue of the…
  • TacoNotEnglish
    4·
    5 days ago

    To spin the rotor, Mark used a powerful brushless motor controlled by a common hobby speed controller

    I don’t know. The article might contain information like that.

    • Altima NEO@lemmy.zipEnglish
      2·
      3 days ago

      Yeah but why would you want to use a tiny brushless motor when you can use a hemi V8 diesel?