mymanmatt Posted April 20, 2018 Report Share Posted April 20, 2018 Sorry no pics. So the other day I had serviced an asian 2836-2. The numbers were great. speed +5 sec, amplitude 280, beat error 0.0. I installed the rotor assy. To my surprise amplitude dropped to 240. After scratching my head for a bit, i found it. 2 screws hold the rotor assy on the baseplate. One is by the balance bridge. To my surprise the bridge on the rotor assy overlapped the balance bridge, slightly. When I tightened the screw on the rotor bridge, it actually put the slightest amount of pressure on the balance bridge. Never saw it before. I cut the rotor bridge back slightly so it cleared the balance bridge. Installed it, and amplitude back to 280. I cked a couple of other asian rotor assy, same thing. That may slowly develop into a bigger problem and may eventually stop the movement. Just thought I would share. 1 Link to comment Share on other sites More sharing options...
Natas78 Posted April 20, 2018 Report Share Posted April 20, 2018 will look for that next time I have a repair, thanks for the heads up! Link to comment Share on other sites More sharing options...
HorFan Posted April 21, 2018 Report Share Posted April 21, 2018 A keen observation! Thanks for sharing your findings! Link to comment Share on other sites More sharing options...
Nanuq Posted April 21, 2018 Report Share Posted April 21, 2018 Where else are you going to find a watch forum where we freely give away details like that?That's what I love about this place. Link to comment Share on other sites More sharing options...
capice Posted April 21, 2018 Report Share Posted April 21, 2018 This is where the boys leave and the gents come in,...good noticing mate. Link to comment Share on other sites More sharing options...
Legend Posted April 23, 2018 Report Share Posted April 23, 2018 Where else are you going to find a watch forum where we freely give away details like that?That's what I love about this place. What, you mean they are free? Ok the gold bars I sent at your demand when I joined! Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Nanuq Posted April 23, 2018 Report Share Posted April 23, 2018 2 hours ago, Legend said: What, you mean they are free? Ok the gold bars I sent at your demand when I joined! Oh, um, *cough* those were, um, *cough* User Convenience tokens of appreciation. And boy did I appreciate them! Link to comment Share on other sites More sharing options...
SSTEEL Posted April 24, 2018 Report Share Posted April 24, 2018 Never come across that before, but have come across the Swiss STP 1-11 auto wind bridge not fitting an ETA 28XX movement. The screw hole (stem side) doesn't align. 1 Link to comment Share on other sites More sharing options...
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