Open Clock Club

Рет қаралды 737

Күн бұрын

Пікірлер: 6

@BradfordNeedham 3 жыл бұрын

I'm constantly amazed/impressed at the number of subtleties involved in what look like simple parts, in this case the minute hand clutch. Thank you for all your work on these videos and the clock club.

@openclockclubarchive325 3 жыл бұрын

Thanks Bradford. All these seemingly small things can either catch a clockmaker out or lead to a less than satisfactory repair. Thanks for the feedback,. M

@lowellfast490 2 жыл бұрын

Please Slow down and explain how and what you are regulating by preload. What does less or more clicks do" in the performance of the lclock.?

@openclockclubarchive325 2 жыл бұрын

Hi Lowell. if you were to plot the torque output from an unwinding spring, you would have something akin to a stretched-out S shape with a reasonably straight bit in the middle an curved ends. In a clock with positive escapement error like an anchor escapement, the clock will run faster with more torque and vice versa. The point of the mainspring set-up and the stop work is is effectively to cut off the ends of the S shaped torque curve so you only have the middle bit. Even so, the fusee and spring torque curve are never perfectly matched so you can fine-tune the arrangement will less or more set up. lets say the clock keeps good time for 6 days then in the 7th starts to loose time, you need to move the used part of the spring 'up' a bit and you do this by increasing the set-up. Conversely, if the clock gains in the first day or so then settles into a relative losing rate, you need to decrease set-up to use less of the top end of the spring curve. Hope that makes sense. an electric timing device is useful for this but you can put timekeeping manually over a week, make an adjustment and see if that helps. The clock I worked on I never gotten round to changing it so it runs fine and loses at the end of the week. I just wind it more often! M

@jbranstetter04 8 ай бұрын

I wonder how much setup you can apply before you run out of spring to wind at the end winding the clock? Meaning that you don't get all of the chain on the fusee because the spring is already tight, or fully wound.