username here Posted March 4, 2014 Report Share Posted March 4, 2014 Has anybody converted the movement for your franken from 36k bph to 28.8? Link to comment Share on other sites More sharing options...
mymanmatt Posted March 6, 2014 Report Share Posted March 6, 2014 I don't think it's a simple conversion. The hairspring and balance are for sure made as a pair. When singer changed their movement from 36 to 28,8, they came with a complete new movement. Must be a lot of changes Link to comment Share on other sites More sharing options...
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