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Spring Drive not starting---anyone have this issue?

3.1K views 7 replies 7 participants last post by  Nokie  
#1 · (Edited)
Hey folks,

I have a Grand Seiko SBGA201 with a spring drive, have had it about a year or a little longer. Generally absolutely love it and am a huge GS fan.

I've found when resetting the time that the movement will often not start when the crown is pushed back in, even when the crown is screwed all the way back in place. I often have to try a few times, and it seems push it in firmly at just the right angle and then it starts up. (Yes, it's fully wound, so no issue there).

Anyone ever have this issue?

Thanks!
 
#2 ·
I've never had it happen with a Spring Drive, but if I have a watch that doesn't start up immediately upon winding I usually hold the watch so that the balance wheel is parallel to the ground, and give the watch a sharp twist about its axis. This generally starts the watch.

Both of my Spring Drive watches have the 9R65 movement. When viewed through the caseback the glide wheel spins clockwise. So that means when the watch is facing dial up, the glide wheel is spinning counter clockwise.

The SBGA201 also has a 9R65 movement - so give that a shot. Hold it parallel to the floor, dial up, and give it a brisk twist counterclockwise.

Good luck.
 
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#5 ·
Fun fact: When staring a Spring Drive movement, the seconds hand runs way to fast in the very beginning. After some seconds, the regulation kicks in - and the speed of the seconds hand is slowed down to perfection. Try this on a Spring Drive that has no power left - and see what happens with the seconds hand in the very beginning...
 
#7 ·
Yes. It's a fun, subtle thing to observe. Before the capacitor charges and the TSR activates the movement briefly spins at the full un-braked speed.

For those who don't own a Spring Drive watch, Mark (Long Island Watch) demonstrates it in one of his Watch and Learn videos. Here is a link to the video, set to start at the point when he demonstrates the freewheeling: link.