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The Encyclopedia of Horology

Component record · Train

Fly Fan

Partially verified

Spinning air brake

What it does

Controls striking speed

How it works

Evolution

Uses air resistance

Known variations

    Identification for collectors

      Common failure modes

      • Loose on arbor

      Diagram

      escape wheelpallets and leveroscillator
      Schematic: escapement arrangement. An outline schematic drawn to show the arrangement of the parts discussed here. It is not a dimensioned working drawing and does not depict a particular maker's calibre.

      Sources & references

      1. de Carle, D., Practical Watch Repairing
      2. de Carle, D., Watch and Clock Encyclopedia
      3. Daniels, G., Watchmaking

      Where sources disagree, the disagreement is stated rather than resolved silently.