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Mann's Creek hopper, ITS ALIVE!!!!!

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  • #16
    I am not sure if I will make the car shaker lower onto the car like some real ones do or if I will shake the rails. Actually most of the coal does empty. I may not even have to make anything, the gear box has a clutch built into it that can shake the car. To make the clutch shake the car all I have to do is turn up the power to the door drive and the clutch will start to slip, which is a ratchet, and that will be more than enough to shake the car.

    I am already working on an automated loader. I built one years ago in HO scale but lost intrest in it because it just looked to phoney in HO. What I want to do is spot empty hoppers under the loaders (I hope to have at least a couple) and push a button that starts a timer. While I am returning to the unloading track the hoppers will load without me being there. I plan on using a design that we use at my work to meter the coal.

    Where I work we design a piece of equipment that is called a Rotary Metering Valve. It basically looks like a revolving door that is laid on its side. On top of the valve there is a hopper that holds the material, in my case coal. When the compartment of the "revolving door" comes under the hopper the compartment fills with material, as the "door" keeps turning the following compartments fill, each one to an exact amount. As the compartments revolve to the bottom of the valve the material discharges.

    I would like to build small rotary valves that have the capacity of the compartments match the capacity of the hoppers and use a stepper motor to rotate the valve on compartment at a time. In theory I should be able to spot a car under the tipple, hit the button, and leave it alone, and in a few minutes a load of coal witll dump into the car. I could even use an idea that I saw on Bill Darnaby's layout, he used a small string to connect to a string of box cars at a grain elevator to simulate them being pulled throught he elevator and loaded, to index a string of hoppers under the tipple and load a few cars.

    What I really like about O scale of HO is gives me a little more room to do stuff like this.

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    • #17
      Jeff-

      The mechanism that opens the doors on your hopper car is shweet! It so sexy and s..l..o..w ... that is what makes it.

      When I switched to O scale and announced my intention to model a quarry operation, a techie fellow modeler here in Richmond immediately suggested that my quarry scenes could be animated. Operating spools in the hoist house could be controlled by a stationary decoder, so that crews might actually load stone onto their flatcars with the AH&D derricks.

      Your coal loading and unloading system got me thinking about such craziness again. [:-bulb]

      Looking forward to seeing what you come up with for loading coal.

      Mark

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      • #18
        I was just looking at Hobby Engineering's website again, lots of cool stuff. They have a tiny vibrating motor that may be able to be used for my shaker. I just ordered 11 more motors to that I will use to make nine more cars, two motors will be spares. They also have stepper motors and controllers for them.

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        • #19
          I hear ya...When I worked the coke ovens 1:1, they used the cable drag to move the empties along the battery's. They would ratchet the loads out onto the lead, and we would shove the empties in the coke battery, grab the loads and take them to the mill. You would do well to research USS Gary Mill Division (EJ&E) or Pittsburgh Steel to see the coal/coke handling ops. I am really impressed

          with your hopper.....

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          • #20
            quote:


            Originally posted by Geezer


            I hear ya...When I worked the coke ovens 1:1, they used the cable drag to move the empties along the battery's. They would ratchet the loads out onto the lead, and we would shove the empties in the coke battery, grab the loads and take them to the mill. You would do well to research USS Gary Mill Division (EJ&E) or Pittsburgh Steel to see the coal/coke handling ops. I am really impressed

            with your hopper.....


            thanks I will look into that.

            In case anyone wants to know, the load of coal in the model hopper weights about 4oz, I have not measured the volume yet. I will have to add a little bit of weight to increase the cars empty weight, but that extra 4oz per car is going to make it fun to pull around loaded cars. I like how the car shakes a little in the video while it is unloading the coal.

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            • #21
              Very impressive bit of engineering & execution, there, Jeff ... :up: ...! I'm simply in awe ...

              CHEERS!

              Grant

              California Northern & Cascade On30 Modular Group, Redding, CA
              JSBSOn30MRRs - Jefferson State Black Sheep On30 Model Railroaders, Founding Member

              DW&A - Diddy Wells & Afterthought On30 Module/Mini-Layout

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              • #22
                I wanna see a string of those in HOn30 supplying your coke ovens ; )

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                • #23
                  Very, very cool. Nice job!!!
                  -John

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                  • #24
                    I finished the hopper, I like the way it turned out and I am in the process of making a second one which will include the changes I had to make to this one, if it works out I will make a master and molds to make more faster.

                    My good camera was having a battery issue over the weekend so I took these photos outside with my wife's point and shoot, they are not the best.




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                    • #25
                      Jeff-

                      Your "old wood" and "old rust" techniques are fantastic. I really like how you finished the wood/metal combination on this car.

                      Mark

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                      • #26
                        Jeff,

                        Fantastic looking car!

                        Good luck with car #2 and the molding process.

                        Larry

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                        • #27
                          Excellent detailing. I have to agree. The coloring on the wood and metal fantastic.
                          -John

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                          • #28
                            Thanks, I hope I can remember how to do it for the next one.

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                            • #29
                              I'm with the others, Jeff, very good colors on both wood and metal parts. You're right about the next ones. Sometimes it's not so easy to do the same thing a second time...

                              And I think the shots are quite decent, too.

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                              • #30
                                While I am sure you would come up with something creative for loading the cars, this might interest you. A "low-tech" way to animate some ore loading shutes. There is even a fun video.

                                http://www.oscale.net/index.php?cate...2_articleid=20

                                Brian
                                My Website: http://sites.google.com/site/deercreekandlaurelry/

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