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Baumgartner 866 (QG, 13,5''')

 

Baumgartner 866 QG 13,5'''Baumgartner 866 QG 13,5'''

Description

The BFG Caliber 866 is simple pin lever movement, which at least uses a yoke winding system. It has got only a single-sided shock protection.

The gear construction is pretty unusual, since one reduction step is missing, and the third(!) wheel is directly driven by the mainspring barrel, which is unusually large and has got a diameter of more than half of the main plate. This can only be acieved beause the minute hand is indirectly driven on the dial side.

Another odd construction is that one of the indirectly driven center second: The outer ring of the fourth wheel directly drives the outer ring of the center second wheel.

This movement is also available with a smaller main plate, using the same caliber number.

Baumgartner 866 QG 13,5''' dial sideBaumgartner 866 QG 13,5''' dial side

 

 

 Technical data

ManufacturerBaumgartner
Caliber866 (QG, 13,5)
Number of jewels1
Escapementpin lever
BalanceNickel
Shock protection(s)Novodiac
Balance cock directioncounterclockwise
Hairspring studfixed
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Mainspring barrel
Center second pinion
Winding mechanismyoke
Setting lever spring0 holes
FeaturesSCI,QG
FunctionsHour, minute, second, day
Beats per hour18000
Size13,5''' (measured: 30,6 mm)
Image in Flume Werksucher -
Baumgartner 866 (QG, 13,5)BaumgartnerBaumgartner866 (QG, 13,5)13,5''''''Baumgartner 866 (QG, 13,5)1 Jewels, 13,5'''''', 18000 A/h, SCI,QG
Factsheet

 

Links

 

This movement was kindly donated by Klaus Brunnemer. Thank you very much!