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Discussion Starter #1
Does anyone know how many sideways 'oscillations' it takes to fully wind up a bellmatic mainspring? I don't have a winder, and I have a few other automatics, but they are 80 hr reserves.
 

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Discussion Starter #5
They are Swatch and Tissot - not sure if it's kosher for the Seiko forum, but if so, I'll post them :)
 

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Seiko 7s26 movements usually take around 3 minutes:)
You must be "swirling" like crazy! It takes about 1800 rotations of the winding weight to fully wind the mainspring.

The technical guide for the 7S26 states 60 minutes on a winding machine running at 30 revolutions per minute, hence the 1800 rotations.

Best wishes,
Myles
 

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What watches have an 80 hour reserve ? Post some pics Please :)
Some of the Spring Drive movements have a 72-hour reserve. Knowing that Seiko generally underestimates this figure, 80 hours might be possible. Note that this is accomplished with a single barrel!

Best wishes,
Myles
 
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