====== Bidynator ======
{{wst>image_r|Bidynator Werk Expl|Exploded drawing of the **Bidynator** [[movement]]\\ © [[Felsa]]|300px}}

**Bidynator** was a brand name for a series of [[automatic]] watch movements produced by [[Felsa]] from [[1942]] through the 1960's. It was the first successful movement with [[bi-directional winding]].

===== History =====
Felsa became an innovator in the 1930s with designer [[Friedrich Meyer]], who patented an automatic winding mechanism in [[1942]]. A bi-directional winding mechanism was patented in [[1947]] by Meyer. Because of Felsa's successful bi-directional automatic winding system, they were allowed to specialize in automatic movements by the cartel of Swiss movement makers, [[Ebauches SA]], along with [[ETA]] and [[A. Schild]].

Felsa introduced their first automatic movement with bi-directional winding in [[1942]]. [[Felsa 410|Cal. 410]], and the associated ladies model, [[Felsa 380|Cal. 380]], were revolutionary but World War II interrupted production and development. Cal. 410 was only produced for a short while before the more-refined [[Felsa 690|Cal. 690]] was introduced in [[1947]] to replace it. These movements were very similar, with many interchangeable parts, but the new series had a longer power reserve (43 rather than 32 hours) and were produced in much greater volume.

===== Movements =====
==== Bidynator Automatic Movements ====
  * First generation
    * [[Felsa 410]] - (1942) 11.5 ligne, 17 jewels, 18,000 A/h, [[sub seconds]]
      * [[Felsa 415]] - (1942) 11.5 ligne, 17 jewels, 18,000 A/h, [[central seconds]]
    * [[Felsa 380|Felsa 380/381]] - (1942) Ladies calibre, 8.75 ligne, 17 jewels, 18,000 A/h
      * [[Felsa 382]] - (1942) Ladies calibre, 9.75 ligne, 17 jewels, 18,000 A/h
  * Post-war
    * [[Felsa 690|Felsa 690/691/696/698]] - (1947) 11.5 ligne, 17/21/25 jewels, 18,000 A/h
      * [[Felsa 692]] - [[central seconds]], date
        * [[Felsa 692N]] - [[central seconds]], date, [[24 hour]] hand
      * [[Felsa 693]] - [[central seconds]], four pushers to set day, date, month, and [[moon phase]], optional [[Incastar regulator]]
      * [[Felsa 694]] - [[central seconds]], date set by pusher at 8 00
      * [[Felsa 695]] - [[sub seconds]]
      * [[Felsa 697]] - [[central seconds]], day, date
      * [[Felsa 699]] - "Permutator" - [[central seconds]], 44 hour central [[power reserve indicator]] wheel
  * Jewel rotor bearings
    * [[Felsa 700|Felsa 700/700N/701/701N/703/703N/706/706N/709]] - 9.5 ligne, 17/21 jewels, 18,000 A/h, 38 hour power reserve
      * [[Felsa 702]] - date
      * [[Felsa 705|Felsa 705/705N/708]] - [[sub seconds]]
    * [[Felsa 710|Felsa 710/711]] - 11.5 ligne, 17/21/25/30 jewels, 18,000 A/h, 43 hour power reserve
      * [[Felsa 712]] - date
      * [[Felsa 713]] - [[power reserve indicator]]
      * [[Felsa 715]] - date, [[sub seconds]]
      * [[Felsa 760]] - "Permutator" - [[power reserve indicator]] hand at 9 00, date wheel
      * [[Felsa 714]] - 15.25 ligne
        * [[Felsa 714-2]] - 15.25 ligne, date
    * [[Felsa 790]] - 11.5 ligne, 17/22/25 jewels, 18,000 A/h, 43 hour power reserve
      * [[Felsa 792]] - date
      * [[Felsa 799]] - [[power reserve indicator]]

==== Post-Bidynator Automatic Movements ====
  * [[Felsa 1560|Felsa 1560/1561]] - 11.5 ligne, 17/21/25/30 jewels, 18,000 A/h, 43 hour power reserve
    * [[Felsa 1565]] - "Inversator" - [[power reserve indicator]]
    * [[Felsa 1566]] - [[power reserve indicator]]
    * [[Felsa 1572]] - date
  * Automatic/manual-winding family (400x = automatic, 401x = manual)
    * [[Felsa 4000|Felsa 4000/4010, 4005/4015]] - 11.5 ligne, 17/21/25/30 jewels, 18,000 A/h, 43 hour power reserve
      * [[Felsa 4002|Felsa 4002/4012, 4003/4013]] - date
      * [[Felsa 4006|Felsa 4006/4016]] - day, date
    * [[Felsa 4007|Felsa 4007/4017]] - quickset date, modified automatic bridge
    * [[Felsa 4000N|Felsa 4000N/4010N, 4005N/4015N]] - modified date mechanism
      * [[Felsa 4004|Felsa 4004/4014]] - date
      * [[Felsa 4007N|Felsa 4007N/4017N]] - quickset date
      * [[Felsa 4008|Felsa 4008/4018, 4009/4019]] - day, quickset date

===== See Also =====
  * [[Felsa]]
  * [[Automatic]]


{{tag>Terms Felsa_calibres}}