S Model Dumper

[Lalo Scalf]

Iam looking for plans or somewhere to start regarding the building of a coal dumper/unloade. I am not interested in the rotary style, more so for mining and also shipping. any thoughts would be appreciated.

Railroads have been dumping coal for a long time, so if you could include information as to the era and location of your railroad, and the receiving customer (retail, power plant, rail-to-ship, etc.), we can better target your needs.

I know there are others that have been cited here over the years, but don't have links so someone else will have to help there. I just saw a link to this loader build by Craig Linn (HOn3) that is nicely documented. It's narrowgauge and loads limestone, but you may find some ideas here that will work for you.

He plans to eventually build a model of the Rio Grande's barrel transfer at Salida that transferred the loads this facilty at Monarch generated into standard gauge gons for the trip to the CF&I at Pueblo after the third rail through Royal Gorge was taken up. So if you do get the itch to unload that way, check back later as he seems to be rolling on this interesting project. Keep in mind the mechanism is the hard part, building the correct structure around it is going to be easier in most cases.

mryombeeI am looking for plans or somewhere to start regarding the building of a coal dumper/unloade. I am not interested in the rotary style, more so for mining and also shipping. any thoughts would be appreciated.

Thanks Ed, This is more the style I am looking for, yes, it may be considered rotary, but what I am trying to keep away from is the more modern style of rotary I have seen displayed on the internet, where numerous cars pull in and are all dumped at the same time, as they have special couplers attached.

I am trying to keep away from is the more modern style of rotary I have seen displayed on the internet, where numerous cars pull in and are all dumped at the same time, as they have special couplers attached. This is more of a dumper mechanism than rotary.

Ulrich triple--it's a big all metal hopper car. Of the three, it has the least evidence of operating mechanism showing. It's designed to unload one car at a time by shoving the car onto an actuator. You can't pull a string through a dumper. Well, not without a whole lot of cleverness.

It's my impression that the Ulrich is the most "leaky", though I haven't checked that out. What's neat about the Tyco (Mantua) is that you can pull a whole string across a dump mechanism. And they're probably the most available/cost effective.

If you are planning on working with loose model coal, I recommend researching that early on. Especially the size(s). For example, if the Ulrich is going to leak, it will be worse with finer grains. My guess is that real coal is a poor choice because it makes (yes) coal dust. Not good on a layout, I think. I'm pretty sure someone makes plastic coal, and that would be my first choice.

Great information Ed, thanks, I will look into these versions and se what I can see. I appreciate yourt time and patience with me. I am modelling in HO and have a dedicated garage 24'x24' with a 10' ceiling. I am just in the process of planning, but am working on building segments of what I want over the colder winter months. This is a project I want to tackle.

I have 2 of these on my layout in the steel mill area and yes i am still touching up areas this year for smooth operations. now back to the subject they work fantastic and were built by tyco and 1 other company and can be found at swap meets and probably ebay rather cheaply. I would also consider scratch building a conveyor to refill them the areas can get tight for movement room when you get serious like i did.

Model of a German dump truck. Controlled using Control+, it features all-wheel drive, articulated steering with a working steering wheel, an oscillating central joint and sprung front axle, and an elevating and rotating cargo hold.

After getting the 42099 set I wanted to build something with Control+ using only the electronic elements found in that set. I originally decided on the Bergmann 4010 HK (a tracked dumper), as I could simply use 2 motors for drive and one for dumping. However, while looking at their products I came across the Bergmann 3012/C815s (they're the same model; the name was changed in 2020) and thought it was so much cooler than the 4010. I also wanted to build the swivel tip version, even if it meant an extra C+ motor, so I ordered another C+ L motor off Bricklink. Ironically, the model I wanted to build due to a limitation of electronics led me to get more electronics.

There is very limited space for electronics and mechanisms, especially with the live axle suspension I wanted to include in the front (the real-life counterpart has a sprung front axle). The front half of the chassis was essentially in the shape of an upside-down 'U', with the drive and steering motors (C+ XL and L, respectively) forming a "bridge" above the front axle. Thanks to their abundance of pin holes, it was easy to make it very reinforced. The C+ hub sits in front of the front axle, quite low in the chassis so its on button could be accessed easily and it's easy to remove for battery replacement (although I never had to replace its batteries). Drive is transferred from the drive motor to the longitudinal driveshaft through a row of 16T gears, with the intermediate ones being the one with clutch so the steering function could pass through. Drive is transferred to the wheels via planetary hubs from the 42099, and steering is done by 2 mini LAs.

In the rear half of the chassis, space was even more limited. The dumping and rotation motors (C+ XL and L, respectively) sit side by side, and the space above the rear axle is literally packed with gears and mechanisms. I originally made the dumb decision to use pneumatics for the dumping, thinking it would make it less mechanically complex, but they're simply no match for the heavy cargo hold especially with one 6L compressor. I ended up rebuilding the rear and changed the dumping mechanism to use LAs, and the result was way better. Even though drive from the dumping motor needs to be directed through the turntable now, there still was sufficient space for that mechanism to fit. The lack of space came at the cost of having the cargo hold rotate way too fast, as there was little space for significant gear reduction, so I made the motor for that function run at a lower speed in the BuWizz app, which I used to control the model.

As for the performance, the model was able to drive across rough terrain with no issues. It could use a little more torque for climbing obstacles, but I didn't want it to be painfully slow either. The dumping is also quite slow, but the benefit is that it has plenty of torque to dump even some heavier loads. Aesthetics wise, this model used quite a bit of System pieces, with the entire grille section being made with System pieces and considerable amounts in the rear of the front section and in the front bumper. The angles of the dump bed also came together well - it was quite robust thanks to taking advantage of Pythagorean triangles. Overall, I consider this model a success. It's one of my most detailed models, the functions worked well, and I had plenty of fun building it.

Its bean quite a while since my last posting. Spending a lot of time with my one and only grandson. (Spoilage)! So got this at an estate sale was missing the bed and a few other parts. So I thought lets try something outside the box, LOL. Scratch build a dump truck. The cab is the dodge little red express. The dump box I scratch built. Lengthened the frame. Added 4x4. Wheels are B&L resin. Gona mount the snow plow from chevy kit on it. Thinking about maybe trying to build a salt spreader for it also. Would like to find a cummings 6 for it if anyone has any idea where I could get one. Thanks for looking

I think the Cummins from Trailer Trash Kustoms is nice but Jamie at Moluminum has the nicest 5.9 Cummins I have ever seen. Prices are similar too with Jamie's being a few dollars more. Took this photo from their FB group.

So I decided if this thing is meant to plow snow, better have a bit more aggressive tires. 16'' mud & snow, from scenes unlimited. front lockers are scratch built. Got the 5.9 cummins from trailertrash yesterday, looking at a lot of reference pics on google.

Still workin on the dump truck. Scratching my head, trying to figure out what I could use to make a caution light for it. The wife calls out for some help putting the dogs flea collar on. '' Bingo'' an idea not the dog. The little clear snap on reflectors that come with the Seresto collars. (small dog). They are hollow so I cut the bottom off, painted the inside amber and made a base out of styrene. Thought I would share.

Making a little more progress on the dumper. Got the chase painted and the cummins in. Scratch building shocks, and have to build a cross member for the transfer case. I also opted out for a standard trans. didn't like the auto. trans. that comes with the cummins.

So got the air intake built for the cummins. Looks pretty good setting in the engine bay. Made from styrene tubing. Next is the exhaust. So here is the exhaust also scrath built. Having a lot of fun with this one.

if you want to only dump a single row (of, obviously, a single table) and you have for example the app "merchant" and the model is also named "Merchant", and you usually import it using a fully qualified name like this: merchant.models.Merchant; do not even try to use this name. The syntax is as follows:

I had the similar problem where I had to create fixtures for specific models from different apps having specific id's. Moreover I had to create just one fixture for all models. so that we don't have to load individual fixtures rather just one fixture for all models.

As a workaround you could make another app and copy the model but point it to the existing table with the db_table meta option. Then you could just dump the models you copied into the new app. You existing app wouldn't be affected.

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