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That looks like about 12:1 total. How far into the latch hole does the bolt go??Pete
I came up with 8:1. Lever D looks like about 4:1, and cross bar connected to the latch (A) looks like 2:1. That gave me 8:1. Is there something else I'm missing? Or maybe I miscalculated?Still, that's a pretty good advantage!And how was the chain pulled? Was it on the end of a lever also, to give some additional help?Kim
Hi Chris. I am an avid follower of your work, although a novice in model engineering. However I do have a lifetime's experience in using various farm machinery.Looking at your amazing 3D drawing of the bucket latch I wonder if there is a link missing at point B. On the photo of the full size bucket I had the impression of a short link which would allow the bolt to be drawn without any sideways movement which would be induced by the arc of the first lever if it pivots from a fixed point. I may well be wrong as it is not easy to see the detail clearly on the photo, in which case I hope you will forgive my intervention. I feel a bit like I'm telling God he made a mistake Mike.
I would dare to say that you have lever F fixed in each end and therefore not doing anything .... one end should be point B that isn't fixed - if I interpretere the picture right .... Best wishesPer
The Lombard was epic enough, but I am enjoying this build even more! Chris, how do you find the time to make such rapid progress?Excellent thread Thank You. Terry
Per,Going back to the original photo (full size bucket) my impression was that Link F was actually a fixed guide bar for Lever D but there appears to be a short link, mostly concealed by Link F, which acts as a floating fulcrum for the lever connected to Latch Bolt A to prevent it binding due to sideways pressure.Mike.