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The following are suggested RPM limits for APC propellers:

  1. Glow Engine (includes Sport and Pattern Propellers) and Speed 400 Electric Propellers
    Maximum RPM=190,000/prop diameter (inches)
    (For example, a 10x6 glow engine prop should be limited to 19,000 RPM)

  2. Thin Electric (E) and Folding Electric (F) Propellers
    Maximum RPM=145,000/prop diameter (inches)

  3. Multi-Rotor (MR) Propellers
    Maximum RPM=105,000/prop diameter (inches)

  4. Slow Flyer (SF) Propellers
    Maximum RPM=65,000/prop diameter (inches)

  5. Racing Propellers (including Carbon)
    8.75 N, W and 8.8 Series 40 Pylon Props
    Sport Propellers (for IC Engines) on Electric Motors
    Maximum RPM=225,000/prop diameter (inches)

  6. Racing Propellers (including Carbon) on Electric Motors
    8.75 N,W and 8.8 Series 40 Pylon Props on Electric Motors
    Maximum RPM=270,000/prop diameter (inches)


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