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Rotary Dumper Exposed - Smelter Operations
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 Posted: Thu Jun 16th, 2011 10:20 pm
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W C Greene
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Don Munsey Jr wanted to see what the rotary dump looked like, I didn't have photos of it anywhere so here are some.




#3 Rosa is shown at the rotary using an old SCPA&M flat car as an idler. There is a weight scale that weighs the ore cars but would go bonkers if a loco got on it (Rosa weighs less than a loaded car). The rotating "10 foot poles" are shown in Switching the mines, used to keep the idler coupled to the ore car during a 360 degree rotation...The unpainted dude on the left has moving arms and legs which are linked to the direction lever. Someday, he'll get some finishing.




Here is the cage that rotates and holds the ore cars in place. The ore car's wheels ride on I beams, not rails. There are bars across the top of the car which prevent it from falling into the crusher at the smelter.  The cage is made from code 125 rail soldered together. The big ring gears are from an r/c helicopter with the centers cut out.




A close up of how the wheels sit on the I beams.




Here are the drive gears, one at each end of the cage. The drive is powered by an old Ford truck motor.......These gears are from r/c cars and the actual power is by an old r/c servo connected to 2 AA batteries controlled by a DPDT switch which controls the direction and can stop perfectly in line for the car to be pulled out by Rosa. This thing has been in operation for several years, I have changed the batteries twice in that time. You will have to excuse the spider webs which festoon everything, the "cob" spiders are perfectly in scale for 1:35 and seem to be everywhere.

                Woodie

Last edited on Thu Jun 16th, 2011 10:52 pm by W C Greene



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 Posted: Thu Jun 16th, 2011 11:06 pm
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Dwayne
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Thanks for the details. Rosa is such a cutie. :)



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 Posted: Sat Jun 18th, 2011 03:17 am
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wclm
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Woodie

That is some real engineering. What are the big gears from? Are they both driven? The thing really looks good. I would like to try something like that for the dock area on my layout. Guess I should consult the experts and learn from their work. Would love to see your stuff in person some day. Maybe work will send me to Austin and I could stop in Dallas.

                                                                                        Clif K



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 Posted: Tue Jun 21st, 2011 06:55 pm
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mopman
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If my memory is correct, the large gears are from a r/c helicopter.



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 Posted: Tue Jun 21st, 2011 08:37 pm
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W C Greene
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Yep-r/c copter gears. I cut out the centers leaving large ring gears. I believe the large plastic gears are made by ALIGN. It pays to visit a full line hobby shop VS a train only store since you see stuff for other hobbies that work for trains. If I had asked about these gears at the local train store, I probably would have gotten a "No, there is NOTHING made for doing any of that!"

              Woodie



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 Posted: Tue Jun 21st, 2011 11:30 pm
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dmunseyjr
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THNX Woodie!



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 Posted: Wed Jun 22nd, 2011 06:26 pm
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W C Greene
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http://www.youtube.com/watch?v=urzr5x2498U

Don-and anyone else interested..here's a link to the rotary in operation from 2007. This is what it looked like before installation on the layout. I still have the working conveyor but don't know where to install it.

                      Woodie



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