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NMRA Data Sheets Available at NMRA.org

M. David Johnson

The NMRA Data Sheets are a resource for modelers with information on General Modeling, Scenery, Trackwork, Motive Power, Rolling Stock, Structures, Electrical Work, Operations, and Prototype Information. The Data Sheets are available on the new Members-Only Section of the NMRA website.

However, many Data Sheets are out of date, originally prepared in the 1940s, 1950s, and 1960s. For example, Data Sheet D4g (Diesel-Electric Locomotive Specifications) was first issued in April of 1960 and doesn’t include data on any locomotive newer than a GP-9. So the NMRA Data Sheets Managers are going to bring the Data Sheets up to date and add new sheets when possible.

We’ve already added four new Data Sheets which were published in the NMRA Magazine, two of which are also on the website and we’re working on three more.

If you have ideas for improvements or new Sheets, email me at mdj@bds-soft.com.

Hobby shop closings

by Bob Browne

Note: Bob wrote this as a a Letter to the Editor of the Seattle Times in regards to this article in February 22’s paper. –Al Lowe

Nice piece on the closing of American Eagles and North End Train Center. It is unfortunate that we live in times where the sources of much our learning is disappearing, the building of kits and railroads forces us to learn how things come together and how many things we take for granted are the result of technical revolution.

In addition to the electronic age taking away much of our free time and the potential for interacting with other age groups, shops like these are vital to neighborhoods and are not just part of the ‘Mall Scene’ where we see more and more jewelry, fancy clothes, food courts and telephone stores. The disparaged  ‘Strip Mall’ is where we find most of our necessary things such as groceries, drug stores, auto supply and even newspaper stands.

For the hobbies, we are doing it to ourselves as more and more of the sources of knowledge and assistance are moving to ‘on-line’ sellers and even these begin to dry up as inventory in shops that are closing is not replaced.

For my own life, it is a scene that will never be replaced. The 70 years I have spent in prowling hobby shops has been most enjoyable and a source of much knowledge. The ‘hands on’ feel of a product and the accessories that are needed to support it are gradually disappearing. Even the newsletter from our model railroad group has moved on-line and has largely disappeared. Thanks.

DCC Demystified

Dale G. Kraus, MMR

Reverse Loops, Turntables, and Wyes … OH, MY!

(Apologies to Dorothy, Scarecrow, Tin Man, and Cowardly Lion.)

These three track alignments have been the bugaboos of model railroading since the invention of 2-rail DC wiring. Letting locomotives run through them smoothly and without shorting or stopping has required the use of toggle switches, relays linked to the position of switches and, for turntables, careful positioning of split pit rail pickup or similar installation on the central pivot shaft. While certainly a “do-able” method, the results were often fussy and required a lot of additional wiring.

Now we have it easy. Several manufacturers, Lenz, MRC, and Digitrax come to mind, have come out with a little magic box called the “Auto Reverser” which does the job without operator intervention.  How does it work?  Well…inside each device is a very tiny witch doctor with a machete and a large supply of minuscule chickens. When he senses the onset of an out-of-phase “short,” he quickly sacrifices one chicken and the problem goes away. (You’re buying this, right?) OK, OK! Actually there is a bunch of sensing circuitry and a fast-acting relay, but the first explanation is more fun. Each of these devices has a pair of “input” and a pair of “output” wires or screw terminals. The input is attached to the track buss and the output is attached to the “reversing section” or, through sliders, to the turntable rails.

The neat thing is, so long as the input and output wires are not attached “backwards,” i.e., hooking the input to the reversing section and the output to the buss, it does not matter which wire goes to which buss wire or rail.  The first loco to enter the section will properly align the reverser. If you do wire it wrong?  Not to worry; it just won’t work. The loco will just stop dead. If that happens, disconnect it and hook it up t’other way.

Now, keep in mind that this really is technology, not magic. The reversing section, be it loop, wye leg, or turntable track, must be completely insulated. Gaps must be placed in both rails at each end of the section and the turntable rails must not touch any of the approach track rails.  If there are switches in the reversing section, be sure that there are no “sneak circuits” through the switch. If there are, cut gaps beyond the frog in both rails of the diverging route. This will eliminate the “sneaker.” Be sure to feed the reversing section only through the reverser output.

One final thing: The reversing sections must be longer that the longest loco lash-up. For most of us this is no problem. If you are in N scale and insist on running mid-train and rear helpers, your reversing section needs to be short enough that the lead set and the first helper aren’t leaving and entering the section simultaneously. This will cause the witch doctor to have a schizophrenic episode and possible cut off his own head instead of the chicken’s. Smoke may mysteriously issue from the auto-reverser … NOT a good sign!

And please, DO READ THE INSTRUCTIONS!

Editor for a Day!

by Jack Hamilton

Congratulations! You have just been appointed “Editor for a Day” of the NMRA Magazine. Well, not really, but you get to act like it anyway. During your assignment you get to revise, reformat, or recreate the magazine in any way you choose. Let out all those pent-up frustrations and “pet peeves” you’ve held for so long.

The question is: What would you change? How would you change it? What would the magazine look like after your change? Why would you make the change? (“Because I think it’s better” is an okay answer.)

Please send your input to kitsapmmr@wavecable.com.

DCC Demystified…Continued

Dale Kraus

Here are a few tips from Sandy Webster concerning decoder selection and use. 

I have used and liked the NCE DASR drop-in decoder on many of the old Atlas/Kato model Alco diesels (RS1, RS3, RSD5, RS11, RSD12, C424/5). I just discovered there is a drop-in decoder for the old Atlas/Roco model EMD diesels too, although it’s not labeled as such.  It’s the NCE BACH-DSL decoder made to replace the really basic decoder in Bachmann diesel like my FT’s. I bought them figuring I might use them in my FT’s. I decided to use them in something else and have been looking at various candidates. I decided to try an Atlas/Roco SD24 since I had a couple with the shells off due to body kitbashing.

It’s a no-brainer, just as simple as the DASR. All I had to do was cut the wires from the trucks to the motor, unsolder the motor contacts from the actual motor tabs and replace them with wires, cut the old headlight bulb tabs off the top of the original plastic strip to make it level, run the 6 wires up through holes on the decoder and solder them to six pads. Add the supplied LED’s in the proper location and you are done. The LED’s may need wires to extend them to the proper place and pay attention to the polarity instructions. Don’t panic, it’s a picture! This works on the GP38, GP40, SD24 and SD35. One of the best things, the list price on the decoder: $19.95.

Sometimes ya gotta ignore the labels and use the decoder that fits.

Miniature Wunderland

Al Babinsky

Miniature Wunderland Main Station

Miniature Wunderland Main Station

On my recent trip to Germany I spent a couple of extra days to stay in Hamburg to visit some of the sights, one of which was of course the Miniature Wunderland of You-Tube fame. The display is located in the Speicher district (Warehouse) of Hamburg, built at the end of the 19th century. It occupies the 3rd and 4th floor at one end and covers an area of 1150 square meters (app.10000 sq ft). At this time there are 7 theme areas with a total of 11 planned. The areas shown are Germany, Austria, Switzerland, Scandinavia and US, most of which is fantasy with some of the icons built as scale models and compressed to fit the space.

At this time there are 1,2000 m (7.5 miles) of track about 830 trains with 14,100 pieces of rolling stock. The longest train is 14.5 m (46 ft) long. There are 1,200 signals, 2,500 switches, 40 computers. About 300,000 lights, 200,000 figures, 215,000 trees and 5,500 vehicles. At the time I was there, the control room was manned by three persons who operated the layout. They operated the trains and vehicles which included emergency vehicles responding to fires. Scenes include a soccer stadium complete with 15,000 spectators and, of course, the two teams playing, an amphitheater complete with spectators, and a fair with its visitors.

The Swiss area extends from the 3rd floor to the 4th floor. From the 4th floor you can look down on the town and the walk down the stairs to the 3rd floor. While descending, you have the ability to look at scenes such as a below-ground station as you can find in many European cities. From the 3rd floor you can look up to the top of the mountain which is supposed to be the Matterhorn complete with cable cars. The major city on the layout is Hamburg with its icons and the Hauptbahnhof (Main Station).

Miniature Wunderland Control Center

Miniature Wunderland Control Center

The two cities where you see the operating vehicles are Knuffingen and Hamburg as they travel on the roads and stop and start as traffic signals change. All vehicles have lights which operate they include signal lights and operating stoplights, the emergency vehicles have operating flashing blue lights, sirens, and do-da horns.

The Scandinavian section has a fjord with real water and several ships that remotely operated. It has a winter scene along with a mining operation, the underground portion of which can be viewed through glass panels. In the US area you can a see pueblo scene which changes into a high desert area around Las Vegas which represented by its casinos, a miniature Mt. Rushmore, Yosemite  National Park with Half Dome, redwood trees, Cape Canaveral (Kennedy Space Center), Miami, and Key West with its overseas railway.

To my surprise there was a modern Puget Sound transportation item at the station, the commuter train called Sounder. I believe the longest train which operates on the layout is in the US section, a freight double-headed by Big Boys. The section under construction is the airport with most of the scenery, runway, taxi ways and terminal ramps finished. Some lights are installed a couple of buildings are there, no aircraft yet. All in all, a very well-built layout with all the tricks that are available to make it seem real. The lighting used fluorescent lights, white, blue, and red to simulate the 24-hour cycle from night to dawn, day and dusk back to night. I was there on Saturday, which was probably not the best day; I had to wait about 45 minutes to get in. The occupancy is limited to 600, which makes it very crowded and hard to take photos.

If Gene Swanson still has the June clinic spot open I would like to do a PowerPoint presentation of Miniature Wunderland. I have about 80 photos that I took and I also bought a DVD of the layout which is about 2 hours long, too long for the clinic so a presentation will have to do.

Miniature Wunderland Underground Station

Miniature Wunderland Underground Station

Miniature Wunderland Nursery Scene

Miniature Wunderland Nursery Scene

Miniature Wunderland City Scene

Miniature Wunderland City Scene

DCC DEMYSTIFIED – 4

Dale Kraus

Speed Matching

Before getting into consisting, one more step needs to be taken. To have a smoothly running consist, all of your locos should run at (about) the same speed for a given speed step. Exact matching may be theoretically possible, but is far too fussy for practical implementation. What we really need is for the locos to start together and run realistically without excessive “bucking.” Unless they all run at about the same speed the faster locos will drag or shove the slower ones, decreasing the tractive effort and causing the faster locos decoders to run hot. This is not a good idea. 

To accomplish speed matching we need to use only three CV’s: CV2 (starting speed), CV5 (top speed), and CV6 (mid range speed). Assuming you have already slowed down your locos (DCC Demystified-3), follow the steps below for a “good enough” solution. 

First, select the loco that starts at the lowest speed step (usually step 2). This will be used as a standard for comparing the others. Place this loco on a three-foot long (minimum) test track. This can be on your layout, but I prefer a separate track. Take another loco and temporarily give it the same address as the “standard.”  Place the second loco on the test track about six inches from the standard, and start the locos. Adjust CV2 on the second loco until they both start at the same speed setting. To avoid having to take the “standard” loco off the track, simply tip it up on the far rail and place a sheet of paper under the wheels on the near side. Do this step for all your locos. Just doing this step will cure 80% of the problems that occur during consisting if you have already used CV’s 5 and 6 to slow down your steel steeds. If you are going to operate your RR before finishing the speed matching be SURE to return all locos to their primary addresses!! 

That’s enough for one night … go take a break. 

The next time you get ambitious, take the “standard” loco and one of the others and place them on your main line, about a foot apart. (If necessary, change the address of the second loco again.) Start ‘em up and go quickly to main line speed. Note if the second loco lags behind or catches up. Use the paper under the wheels trick to isolate the standard loco and, using Program on the Main, adjust CV5 on the other up or down. Check the two together again and change CV5 as needed. Repeat this drill with the other locos. Note here that they will NEVER run exactly at the same speed. Just get it close, as minor differences will not matter. Now, set CV6 to the mid-point between CVs 2 and 5. That will do it. 

Before you quit, remember to reset the addresses of all your locos.

Quiet Moments at Karlsberg

Dale G. Kraus, Photos by author

Karlsberg Hauptbahnhof

As an experiment in posting directly to the Grab Iron, Here are two “moments of implied action” at the Sudwest Deutsche Eisenbahn Verein Karlsberg yard.

In the First photo an 03 Pacific and an E13 1-C-1 await their scheduled departure times at the Karlsberg “ Hauptbahnhof” while an 0-8­-0T drills the coach yard.

Karlsberg Engine Terminal

The second photo shows a class 18 light Pacific and A Class 41 Mikado nose to nose in the engine servicing facility, while to the left a small mogul is about to get it’s water tank filled (just as soon as someone climbs up and opens the hatch.) Final checks and lubrication is being done to the pacific and the mike, while the roundhouse super is making a point to the guy with the lube oil cart.