I wanted to show you some more of the work on animating the steam donkeys. The first one I worked on is the donkey engine at the log dump.
Rather than powering the winches electrically I chose to use a manual Cable to lift the logs or lift the unloading mechanism at the log dump.
Here you can see the shrink tubing I used to conduct a fine wire cable from the first spool of the loader back to a hole extending up into the water tank of the loader.
(https://i.imgur.com/NRb1o92.jpg)
The Cable is threaded up through the water tank and out the water fill spout. It’s end is affixed to the water tank hatch (cap) which can be pulled to move the cable.
(https://i.imgur.com/aS3luUo.jpg)
The cable goes from the first spool of the loader to the pulley in the block on the gin pole.
(https://i.imgur.com/AurSzXQ.jpg?1)
It is connected with a hook and swivel to the piece of railroad steel (lifting bar) that will be attached to chains (awaiting some parts before they are attached) that will nudge the logs off the log cars and on to the dump.
When the bar and the chains are on the ground the cable pulls the water hatch (cap) closed on the tank.
(https://i.imgur.com/R1Khzyd.jpg)
(https://i.imgur.com/42xnZXm.jpg)
When the bar and chains are hoisted up the cap and wire cable are pulled through the tank like this.
(https://i.imgur.com/Y7NQyYM.jpg)
(https://i.imgur.com/dsmPl9V.jpg)
Hope this makes some sense and the pictures helped. I hope to make some pictures and maybe a video showing how the logs are unloaded using this mechanism in the future.
(https://i.imgur.com/pdcumjC.jpg)
As always, thanks for looking.(http://www.railroad-line.com/forum/images/eyebrows_125.gif)
Doc Tom