Good diagram depicting train

# Thread: Good diagram depicting train

1. ## Good diagram depicting train

Where can I find a good diagram or picture or animation or anything that clearly shows the various wheels in the train and which wheels drive which hands? I haven't found a clear enough picture yet to fully "get it".

2. ## Re: Good diagram depicting train

Maybe this is interesting, it's an old Hamilton movie about how a watch works: http://www.youtube.com/watch?v=OiCPu0SjEW4 .

3. ## Re: Good diagram depicting train

Originally Posted by Michelangelo
Maybe this is interesting, it's an old Hamilton movie about how a watch works: http://www.youtube.com/watch?v=OiCPu0SjEW4 .

Thats great thanks for posting

4.

5. ## Re: Good diagram depicting train

Agreed, this video is very good. Nice and simple descriptions. Thanks.

6. ## Re: Good diagram depicting train

Yes I've watched that video. It's very informative. But having watched it, it's still not clear when you look at an actual movement that's not stretched out which wheel does what. If someone who knows could take a look at this drawing
http://www.timezone.com/library/wglo...93544649519769
and tell me the function of each wheel named there, as relates to the hands on the dial that'd be really great.

7. ## Re: Good diagram depicting train

Originally Posted by SCD
But having watched it, it's still not clear when you look at an actual movement that's not stretched out which wheel does what.
Click the link that I gave you in the other thread. There's a link entitled "Wheel Train" in it that describes the basics. The whole thing is essentially reduction gears to let the mainspring unwind at a controlled rate, and the number of teeth are part of an equation to arrive at the desired escapement speed (bph). A watch that has a subdial seconds uses the 4th wheel to drive the second hand. Center sweep seconds uses another wheel in the train to move the second hand which is attached to the center pinion.

8. ## Re: Good diagram depicting train

Originally Posted by ulackfocus
Center sweep seconds uses *another* wheel in the train to move the second hand which is attached to the center pinion.
Which wheel drives the center seconds hand? I thought that whichever wheel is directly engaged with the escape wheel pinion would drive the seconds.

Thanks for the link. I've read through it once and am going through it again. I'm trying.