Wednesday, January 18, 2017
Monday, January 16, 2017
I'm experimenting with making car cards that closely resemble actual prototype paperwork. It turns out that I can replicate the look and feel in the roughly 2.5 x 2.75 inch space I have available. The plastic sleeve has information pertinent to the car as explained in a post from last week.
Additional sheets stacked in the sleeve represent the paperwork attached to the freight car ("Hauptzettel"), which was used by the switching crews to determine where a car is going. There was a large number of variations of Hauptzettels based on the kind of freight, purpose, and urgency. I'm missing a few bits of information for my railroad (primarily schedule and train numbers) to completely fill in the required information. Since I have been unable to find a table linking the various yards and freight stations in Germany to their respective routing number ("Richteinheit") for now I'm trying to make up somewhat plausible numbers as I go. This is primarily relevant for cars coming from or going to towns beyond the boundaries of the modeled railroad. Cars coming from elsewhere will have a Hauptzettel with the closest yard or major freight station, while paperwork of cars leaving the modeled railroad will be coded for the yard closest to the destination.
I made some blank Hauptzettels first, and then went all in. To keep some sanity I'm preplanning car movements across the layout, similarly to how fully filled-in 4-cycle car cards are pre-planned. However, instead of filling out one half of a 4-cycle car card I make the respective Hauptzettel.
Let's take a look at some examples for the Welztalbahn:
The first sequence is for car 21 80 336 1 494, a flat car with stakes, DB type Kls 443. The model of this car is loaded with timber. The sequence for this car is shown in the photo in the row at the top.
- The car starts loaded on a local transfer freight in Prechtal staging and is delivered to Emsingen. The routing calls for sending it to Talheim. Emsingen is not a yard, Talheim is one town over, so I didn't put a Richteinheit-Code on the Hauptzettel. I don't know if that would have prototype practice, or if they had labeled for the closest yard and then maybe send the car there, just to get it back a day later, or put the car right on the next local transfer to Talheim, since it's obvious where it's supposed to go.
Note that Hauptzettel in the 60's and 70's only include the destination station, not the sender or receiver of the freight. That information is included in the waybill traveling with the conductor. Local rules and practices at the destination station usually determined where to deliver a specific car. I'm simulating this by adding a "handwritten" note to deliver the car to Gregorius, which is the sawmill in Talheim.
- In the next session we assume the car is unloaded, and no longer needed, so it travels as empty car ("Leer") to a nearby yard for storage. I picked Freiburg Gbf, which is near the imagined south-end of the Welztalbahn. This implies that the car will be picked up at the sawmill by a local transfer run to Emsingen, where a southbound local freight will take it to Freiburg.
How do we know that the car needs to go on the southbound freight, and not the northbound freight? We're in the Black Forest which belongs to the regional railroad office in Karlsruhe ("Bundesbahndirektion Karlsruhe"). The Richteinheit Code for all yards and major freight stations in the region starts with "Kar", followed by a sequence number that roughly identifies the area. Since all major freight exchange points in the region are in the Rhine valley, I assume that Karlsruhe numbered their Richteinheiten from north to south along the Rhine. The switching crew in Emsingen has a cheat sheet that basically says, "Cars for Kar 12 - 15, Switzerland, and Italy go south, everything else goes north." The actual switch crews had similar tables for the various destinations across Germany. Eventually, the car ends up in Freiburg staging.
- Finally, in the next session it comes back, requested for loading in Prechtal. The car might have been "somewhere else" in the meantime. Since Freiburg is the closest yard for cars inbound to the Welztalbahn from the south, the Hauptzettel is tagged for Freiburg. The car arrives in Emsingen, the local crew knows which trains goes to Prechtal, and the car is put on the next local transfer run to Prechtal staging. Now the cycle can start anew.
The third sequence is for car 254 917, a box car DB type Gmhs 55. The 's' indicates that this car may be put into trains traveling at up to 100 km/h and the 'h' indicates the car is equipped with steam heating connectors, i.e. it's feasible to put this car in passenger trains. The sequence for this car is on the lower right.
- This a LCL (less than carload) freight plan, indicated by the red border. On the outbound run, the car travels on any available local freight train from Freiburg to Hausach, indicated by the lack of specified trains at the bottom of the card.
- On the return trip from Hausach, the car needs to be set out at specified stops. I have not built the revised schedule yet, so the rows are missing the respective train numbers. I'm thinking that the car might arrive from Hausach on the regular local freight, gets set out to the freight shed immediately, loaded/unloaded and then continues south with a local passenger train. The set out in Denzlingen is already off-layout, so the passenger train will take the car to staging.
Of course, all this paperwork is in German and I live in California. I'm hoping that most of the meaning can be derived by visiting operators with knowledge of only 3 words of German:
- "von" = "from"
- "nach" = "to"
- "Zug" = "train
This will be added to the cheat sheet.
Finally, I'm likely taking some liberties in historical accuracy, as I have been unable to find a copy of the applicable rule book yet (Deutsche Bundesbahn DV 605 "Gueterbetriebsvorschriften") which explains various aspects of the process in vast detail, including samples of paperwork.
Most online sources I've found focus on the 50's and 60's (Germany Epoch III). DB made substantial changes to freight operations starting in 1974, and my layout is set in 1972, so I'm reasoning that practices in the early 70's likely resembled what was done in the 60's.
There are some aficionados that do something similar to what I'm trying here, but they focus on Deutsche Reichsbahn in East Germany where practices were similar, but had diverged over time, so the paperwork and routing codes look a bit different, too.
Sunday, January 15, 2017
While driving over the hill I joined a gazillion others stopping at the dam to take a look at Lexington Reservoir. The sun was already very low on the horizon.
The reservoir is full. All along the edge of the lake trees are standing in water. The water level is about a foot below the edge of the spillway. I suspect it will spill again later this week when the forecasted rains arrive.
Saturday, January 14, 2017
[ Talheim posts ]
The script for automated running successfully completed a 2 hour run today with no accidents and no derailments. I call that good enough. A few mechanical issues were found along the way as expected and mostly taken care of on the spot.
While trains were running I played with various building arrangements for Werner & Soehne. I decided pretty quickly that rectangular building shapes are not going to cut it here (contrary to earlier plans), so a more substantial kitbash of the well-known Kibri factory will be needed to fill the triangle between the two tracks serving the factory. The short wall on the right will be reduced to only two columns so that the building can slide closer to the turnout. The cut-off column will be used to fill the gap between the other short wall and the administration tower.
The large loading ramp will move from the rear to the aisle side of the building giving me an opportunity for lots of detailing work at some point in the future.
I'll keep the coal dump at the end of the rear track and kit bash the second building as half-relief from DPM parts and some parts from Faller's B-159 "Lokwerkstatt" kit, which has been sitting on a shelf for the last 25+ years.
On the other side of the aisle I did the fourth revision of the track arrangement on this shelf. Kibri's kit of the Herrenberg agricultural supply building seems a bit underscale, especially the silo tower. It should be quite straight-forward to make it a bit taller...
I like this new track arrangement. I flows better than earlier versions and the silo tower draws the eye away from the background.
Wednesday, January 11, 2017
The system for routing cars on the Welztalbahn keeps evolving. I started out with switchlists printed by the JMRI Operations module, and pretty quickly moved over to the MicroMark 4-cycle car card & waybill system. I used that successfully for several years and that's what I'm still using on the layout.
The latest iteration started off with inspiration from Tony Thompson and Tony Koester to more faithfully replicate the actual paperwork used on the prototype, mixed with ideas from FREMO, as well as some prototype paperwork images found on the Internet. The topic of how railroad freight was routed in early 70's Germany consumed many hours of research mostly in online forums. Talking to people that know how this stuff worked 40 years ago in person is a lot harder if you live 5000 miles away. Nevertheless, this topic became fascinating enough, that I bought more prototype paperwork extending the small collection I already have. Here and here are some good examples of what actual Hauptzettel looked like.
A major change I made since my first discussion of this topic is that I put the era-appropriate routing number on the car card ("Richtpunktverfahren"), think of it like a postal routing code for the last yard before the destination. The system has changed multiple times, and the code in the 70's didn't look like what I photographed in the 80's.
Even though I don't have a yard, I expect that an operator on the Welztalbahn will be able to make good use of this for outbound cars. For inbound cars the code will identify the freight yard the local freight the car is in is coming from. I hope that's not going to be too confusing...
Here's a photo of a empty car card in the plastic sleeve. The sticker at the top has car number, car type, and exact car class (if known). This the "Hauptzettel" (car card) for an empty car to be stored at a nearby freight yard. I don't know if there was a yard near Freiburg in the 70's and I don't know if the routing number is correct, but it's at least plausible: Freiburg belongs to the regional DB office ("Bundesbahndirektion") in Karlsruhe, and is not a major regional yard like Mannheim, so a two digit number is likely.
On the reverse side is a sheet with compressed information about the car. The most useful for operators will be the photo, since European car identification are stenciled on cars in fairly small numbers. There is manufacturer, model, and coupler information. I replicate some of the prototype information like car length, weight, and maximum speed, and also include the respective values for the model. For added flavor I include the weight/speed table that's present on every car outlining how much freight the car may be loaded with.
I collected this information from all active freight cars on the layout. Now I "just" need to design a few more blank car cards, print all info sheets, stickers, and car cards, fill them in, stick them into the respective sleeves, and we are ready to roll.
Monday, January 09, 2017
Sunday, January 08, 2017
With all the rain this weekend, I spent quite a bit of time in the train room working with JMRI and my custom scripting to update the automated running machinery. I originally wanted to integrate with the newish dispatcher functionality built into the newer JMRI versions, but eventually gave up and just tweaked the script I've been using since JMRI 2.x days. My layout panel needs work to function properly with the Dispatcher module. JMRI on the layout computer needs updating, which implies updating Java, which implies updating Ubuntu, which in combination implies a giant time sink I didn't plan for. I will do that eventually, but not now.
The scripting for automatic running is working properly now with 5 trains for some diversity, including opposing traffic on the single track main line.
The platform lights in Emsingen are now powered up. I need to add some passengers, plus workmen at the freight shed, and then the scene is mostly done.
I really like the perspective and angle of the photo above, but the limits of the smart phone camera are painfully obvious. Taking proper night shots of the layout with the digital SLR camera remains on the to-do list.
Well, the rain has come in real good now. Yesterday's freeway drive over the hill to Santa Cruz was a bit messy, and there were low-hanging clouds at the summit.
Nevertheless, eldest daughter arrived safely at her college dorm, and I made it back in one piece, too.
It rained nonstop this Sunday, various parts of San Jose and Morgan Hill are under flood advisory. Coyote Creek has started to flood the trail again. We're certainly getting some badly needed water.
Tuesday, January 03, 2017
|6 o'clock on a cold Tuesday morning.|
We're ready to roll.
I took 3 months of personal leave from work, plus 2 weeks of vacation over the end of year holidays. The intention was to disconnect from work, do some hobby projects, and recharge my batteries.
As you can tell from the avalanche of blog posts over the last 3+ months:
I finished two major model railroading scenery projects:
- The Hallelujah paper mill at Silicon Valley Lines is operational and mostly scenicked. It's a lot more fun to operate an industry with buildings and recognizable loading areas, adding icing on the cake of a large operations-oriented layout.
- The Emsingen station area is finished on the street side, and very close on the track side, closing a large scenery gap on the Welztalbahn. I refined my techniques and gained confidence in what I'm doing.
I threw in a trip to Germany to hang out with my parents for two weeks. While there, I did quite a bit of background research on the prototype Murrbahn, which is serving as inspiration for a future home layout.
I learned how Deutsche Bundesbahn handled freight traffic in the early 70's. Visits to the Staatsarchiv Ludwigsburg, reading DB documents, and digging through the Drehscheibe Online historic forum proved to be particularly useful. Revised paperwork for the Welztalbahn made substantial progress.
I'm grateful to have a supportive employer and managers that encouraged me to take the time off, with the knowledge that I have a job waiting when I return.
It was tough going back into the office this morning. The warm welcome by co-workers and friends made up for it. I'm looking forward to my new assignment which is already proving to be challenging and fun.
Monday, January 02, 2017
I'm prepping for an update of my automated running script, which requires that all track used by automated trains is serviced and working well. The Welztalbahn hasn't run for quite a while and especially the M-track in staging had issues with dirt, dust, and a bit corrosion. In the past WD-40 has always been useful in helping to resolve these. This time around I gave my Centerline cleaning car a workout too.
The cleaning train is pulled by 151 104 (Maerklin 3058), a very heavy 6-axle locomotive with powerful motor, excellent traction and power pickup.
I weighed down the rear of the Centerline car to reduce the likelihood of the rear truck climbing up over the rails at turnouts that are thrown against the train, as is common in my staging tracks. Regular cars don't have any issues with this, but the cleaning roller is putting enough strain on the car that every bit helps to keep it on the rails.
Bringing up the rear is a container flat car with two Noch "Reinigungszwerge" cleaning pads.
I soak the roller of the cleaning car in 70% isopropyl alcohol. The roller is usually rubbing over the top of the rails and not rolling very much (that's good and intentional). The Noch cleaning pads provide some extra rubbing and pick up the alcohol. After a few rounds, the track is squeaky clean.
Thursday, December 29, 2016
After matching the existing ground cover in Emsingen yard to the freight tracks I did yesterday, I spent quite a while today cleaning up the layout room and getting ready for cataloging the remaining freight cars for the new car card system.
An intentional side-effect of the cleanup is that I can get to the underside of the layout again, and install the wiring for the new platform lights.
Wednesday, December 28, 2016
The lights are on the layout. Since the platforms are made from styrofoam, I made mounting holes from 1/8" styrene tubes. I would have preferred brass tubes, but didn't have any in the right size in stock.
The tubes are glued to the subroadbed and the platform. The lights are sitting loose in the tubes.
It was still a bit early, so I proceeded to work on ground cover between the tracks. This is very fine, dark brown sand with a very pleasing color that nicely captures the look I was after. Here and there I added a bit from sand used for the platforms, as well as some weeds. In the early 70's this active freight area would have been reasonably well-maintained, so the main areas should be mostly devoid of weeds.
A nice side-effect of using a different ballast color for the main track, with the darker sand as background, the main track now really pops. One even gets the impression that the yard tracks are lower in the ground.
I really like the ring light ("Ringleuchte") lamps for stations that have not had their lighting upgraded to modern lamps, so I decided a couple years ago that Emsingen will get ring lights, while Talheim station will have upgraded platform lights. I selected Brawa Nr. 5504 for Emsingen.
However, what the catalog picture doesn't show you is the black wire from the lamp body to the top of the brass mast as shown above on the right. This completely destroys the effect of the ring holding the lamp. I replaced the black wire with thin magnet wire as shown above on the left, which in my opinion looks much better than the lamp out-of-the box.
Das Katalogfoto der Brawa Nr. 5504 Ringleuchte zeigt leider nicht das duenne schwarze Kabel von Birne zum Lampenmast (siehe Bild oben rechts). Ich habe meine Lampen mit feinem Spulendraht umgebaut. Das Ergebnis ist im Bild oben links.
Here's how I'm converting the lamps.
1) I start by cutting off the black wire leaving only a short bit at the top of the lamp body. Ich schneide das schwarze Kabel an der Lampenfassung ab, lasse aber noch einen kleinen Stummel stehen.
2) Thread the magnet wire through the mast and wrap the top end twice loosely around one side of the ring. This gives enough guidance to the wire later when I pull it tight to follow the ring shape.
Der Spulendraht wird durch den Mast gefaedelt und zweimal lose um den Ring geschlungen. Auf diese Weise folgt er spaeter problemlos der Form des Rings.
3) Solder the magnet wire to the short wire bit. Pre-tin 1-2 mm of the wire. It's easiest to just burn away the plastic insulation with the soldering iron.
Ich loete den Spulendraht an den Kabelstummel. Es werden nur 1-2mm benoetigt. Die Kabelisolierung am Stummel wird am besten mit Hitze vom Loetkolben entfernt.
4) Carefully pull the magnet wire taut through the mast, prodding and shaping the wire to adhere to the ring contour
Vorsichtig den Spulendraht durch den Mast zurueck ziehen, und um den Lampenring formen.
5) To protect the fragile magnet wire I twist it with the brown cable at the bottom of the mast. To make hook up easier, I shorten the black cable and solder it to the magnet wire, tightly twisted with the brown wire so nothing can move.
Um den empfindlichen Spulendraht vor Beschaedigungen zu schuetzen, verdrillle ich ihn mit dem braunen Kabel am Mastfuss. Fuer einen einfacheren Anschluss loete ich ein Stueck schwarzes Kabel an den Spulendraht, und verdrille braune und schwarze Kabel fest miteinander, so dass alles zusammenbleibt.
6) Finally, I paint the magnet wire in a light grey color to hide it. I used Polly Scale CSX Gray.
Zum Schluss male ich den Spulendraht mit einem hellen Grau an. Danach ist er fast unsichtbar, und faellt mit etwas Abstand ueberhaupt nicht mehr auf.
Done. Here are my 5 lights in Emsingen ready for installation.
Tuesday, December 27, 2016
I put the tower back and the mess doesn't look quite as messy anymore. I'll hold off on the Gruppenablenkung for now. A thin coat of watered down matte black gives the right base for final colors later.
Monday, December 26, 2016
Maerklin K-track turnouts have an unusual mechanism to move the points. The mechanism is located halfway up the turnout and moves the points using a flexible lever. The advantage of this approach is that the points will snap back into place if a train fouls the turnout. The disadvantage is that turnout throw and lights are at the completely wrong place. Thus, detailing Maerklin turnouts with fine Weinert parts for mechanical interlockings (Nr. 7208) is somewhat an oxymoron.
Nevertheless, I'd like to try. The wire loop from the tower arrives through ducts from the right entering the main mechanism. I'm adding a turnout throw closer to the tip of the points and "drive" it from the main mechanism, i.e. the main mechanism is where certain turnouts on the prototype might have a center lock ("Klammermittelverschluss") and the look is reverse from what it normally should be. A workable compromise for now.
I built enough of the remote throws in assembly line fashion, and tried the arrangement on the layout.
|Building a bunch of remote turnout throws from styrene. The prototype is on the left.|
|Maintenance facility turnout at track 1 in Emsingen|
|Remote turnout throws installed at the south end of Emsingen|
Next I built up the wire ducts towards the tower. After some contemplation I figured the prototype would not have bothered with a full blown wire group diversion ("Grupperablenkung") at this tower. I removed the building for better access.
While the arrangement looked ok'ish with the first couple turnouts connected, ...
... it became quite messy and didn't at all look like what you would expect from a major German government agency as it progressed. I'm not happy with this spaghetti bowl. The rather tight turnouts, sharp angles, and limited space are not helping, but that's the track geometry I have to live with.
As remedy, I'm going to build a Gruppenablenkung and attempt to keep the routing of the ducts as straight and rectangular as I can make it. The longer run to the turnout on the left (and the south entry signal, too) would likely be open-air. Let's see whether that works out better.