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Tenderlok posted a topic in LEGO Train TechDear AFOL trainheads, After almost six months of designing work, another five months of construction, countless bursts of temper, and being relieved of a small fortune, I am very proud to present my latest locomotive MOC. This time, it’s a 2-10-2T narrow gauge (760 mm) steam locomotive, class 600.76, of the Bulgarian State Railways (Balgarski darzhavni zheleznitsi, BDŽ). Basically an enlarged version of the German DRG Baureihe 99.73, the first five locomotives of the class were built in 1940 by BMAG (formerly L. Schwartzkopff) in Berlin for hauling all kinds of trains on the mountainous Rhodope railway from Septemvri to Dobrinishte. Delivering about 850 hp, the engines were extraordinarily powerful by the time’s standards for single-frame narrow gauge locomotives. They were so successful that the BDŽ were keen to acquire more, but after the Bulgarian Tsardom had turned into a communist republic at the end of WW II, it became almost impossible to buy industrial goods from German manufacturers. Thus another 10 engines were delivered in 1949 by Fablok in Chrzanów, Poland. These Polish-built locomotives were technically identical to the original Schwartzkopff ones, but could easily be distinguished from the first series by the combined steam/sand dome casing and the odd-looking smoke deflectors, which seem quite ridiculous on an engine with a top speed of no more than 45 km/h! From 1966 on, after new diesel locomotives had arrived at Septemvri, all class 600.76 locomotives were relocated to Cherven Bryag in northern Bulgaria. Several have survived until today, albeit most of them in desperate condition. One engine – No. 609.76, however, is in operational state (now stationed in Septemvri again) and regularly used for excursion trains. My model portrays a locomotive from the second series as it ran in the late 1960s, some years after the whole class had been equipped with compressed-air brake and supplementary oil firing. As opposed to the drawing, it therefore has a shortened right side tank (to make room for the air compressor), air reservoirs below the rear tank and an extended coal/oil bunker. The model is in accurate 1:22.5 scale except for the track gauge, which according to G-scale standard is always 45 mm regardless of the prototype’s actual value (as mentioned before, class 600.76 has 760 mm, or 33.8 mm in 1:22.5). Therefore, it matches LGB garden railway track and rolling stock. Dimensions and height of the coupling bars are designed in a way that they work with LGB link-and-pin couplers. Three PF L-motors working on the central driving axle are responsible for propulsion, with the other drivers (BBB XL) being coupled by the side rods, just as in the real thing. One BuWizz brick allows to remote-control running direction as well as speed, and serves as a power supply for the lights (separately switchable front/rear headlights, combined cab & running gear lights). The LED equipment was purchased from Brickstuff; valve gear parts and main rods were supplied by zephyr1934. The running gear layout proved to be quite a challenge. The leading and trailing axle are of the Bissell type and can swing out by 9°. Of the driving axles, the second and third one are blind, while the fourth one is slidable laterally by +/- ½ stud. With this configuration, the engine is running stably on straight track, yet also able to negotiate LGB R3 curves and switches (1195 mm radius). The model consists of more than 3200 parts and weighs about 2.2 kg. Enough said – enjoy the pictures! Some views of the engine frame. For reasons of stability, I had to fill the prototypic cutouts with trans-clear plates and bricks. You can see the steam inlet pipes running to the cylinders on the outside, as well as the exhaust pipes inside the frame, leading steam to the exhaust nozzle in the smokebox. Underneath, the brake rigging is also reproduced: The leading/trailing trucks. The tongue connecting the truck to the main frame is free from load, which means that it could be kept prototypically thin; the engine weight is supported by the axle bearings via the 4x4 tile on top. Fully detailed cab interior, including a tiltable ”Marcotty“ type firebox door and functional folding seats: Complete smokebox interior as well. The exhaust nozzle, spark arrestor, smoke stack bottom, boiler tube openings and superheater tubes are visible: Plenty of water in the side tanks: Some boiler details, among others showing the generator hidden behind the smoke deflectors: The combined oil/coal bunker can be removed to give access to the power button and the charging socket: The three magnetic switches for the lights are hidden in the rear toolbox: Posing in front of a historic BDŽ crest: The cab lettering: The lights: Some matching, albeit non-purist decoration (1:24 GAZ M20 Pobeda by Yatming, 1:22 [sic!] VAZ/Lada 2106 by Avtoprom)… A short video, showing the valve gear in motion. Note that unlike many conventional model locomotives, the valve stem is really pushed back and forth. A video of the engine pulling an LGB G-scale train will follow as soon as possible. As always, you can download the lxf file here. Also, more and much larger pictures can be found in my Bricksafe folder. Finally, I’d like to say special thanks to Sergio Monai, who with his fruitful feedback and proposals kept me stimulated to achieve the best possible result! Comments are of course most appreciated – thanks for stopping by! Best regards, Sven Edit: New video here!
Tenderlok posted a topic in LEGO Train TechDear train lovers, It's time for another locomotive MOC! As a tribute to my favourite holiday region (where in fact I am right now, writing this), I chose the Flensburger Kreisbahn's No. 1, a 0-8-0T narrow gauge locomotive, as a prototype. The Flensburger Kreisbahn ("Flensburg county railway") was a 1000 mm gauge railway in Germany's extreme North, with two lines (94 km in total) running through the hills of Anglia close to the Danish border. When the railway's older, saturated-steam locomotives became too weak to handle increased train loads, two new superheated-steam engines were ordered from AEG in Berlin - yes, there was a time when AEG, famous for its electrical devices, also built steam locomotives! Delivered in 1926, these 0-8-0T engines, numbered 1 and 2, were an immediate success. With approx. 300 hp and a permitted speed of 40 km/h, they were suited for both freight and heavy passenger trains and remained in service until the railway's closure in 1953. Sadly, both locomotives were scrapped. A substantial problem while designing the model was the almost complete lack of reliable sources. All technical information had to be derived from a short description, some b/w photos and a single small drawing in just one book (Schöning/Kupfer: Die Flensburger Kreisbahnen. Verlag Kenning, Nordhorn, 2004). Nevertheless, I'm confident that my model comes as close as possible to the real engines (footnote: Sadly, Mr Kenning didn't reply when I asked for permission to reproduce the above-mentioned drawing, so I can't show the usual comparison between model and prototype). The MOC consists of approx. 2,200 parts and weighs just under 1.5 kg. It is held in accurate 1:22.5 scale, therefore compatible with conventional garden railway equipment (45 mm G-scale track), and can be coupled to rolling stock fitted out with LGB link-and-pin couplers. My layout uses the LGB R3 radius (1195 mm), so the locomotive has to be able to negotiate these curves. However, as I wanted to avoid the use of blind drivers for aesthetical reasons, this required two little tricks: The last axle is slidable sideways by +/- 1/2 stud, and the second axle's wheels are slightly set inwards, resulting in an increased lateral track play. Although this arrangement causes some drag while negotiating curves, it nevertheless works. The locomotive is driven by two L-motors. A BuWizz functions as both a battery pack and remote control receiver. The lighting equipment was bought from Brickstuff, while the wheels are BBB XL drivers, as usual. Purists may kindly ignore the two following scenes... Of course, the engine crew was proud to pose for a souvenir photo. Even the local grocer came to have a look at the new locomotive. The engine frame: While my previous BDZ 606.76 had its focus on exploring the possible level of detailing for a LEGO model, this time the goal was to design a simple locomotive for uncomplicated operation. Above all, the new model had to overcome the 606.76's proneness to tipping over. Thus, the frame houses two weight bricks for improved traction and a lower centre of gravity (highlighted in blue): Some views of the brake rigging and the two large vacuum-brake cylinders: All drivetrain components, including the BuWizz, are tightly packed and positioned as low and as close to the engine's centre as possible, again with the aim of optimizing the COG: The power button and the charging socket are accessible by removing part of the boiler top: The cylinders, closed-type feedwater heater (system "Knorr"), and generator: The upper part of the cab. While looking quite simple, the task to model the roof's half-stud offset and the vent hole in the cab front almost drove me nuts... But I think I found a satisfying solution: Cab interior and lights: This time there was no space for magnetic switches to control the headlights; so the coal bunker contains two small separate battery packs (with built-in switches) for front and rear lights. The cab is illuminated, too, when any of the two circuits is turned on. Realistic Winterthur valve gear. The basic dimensions are the same as on my BDZ 606.76: Originally, I had used zephyr1934's rods and valve gear parts again. But then I found them to be looking too massive , considering the rather delicate rods of the prototype. Besides, during the first functional testing sessions of the near-completed model, the flex elements which I originally used for the side rods proved too large by just a fraction of a millimetre - the cable connectors collided with the rear mounting of the crosshead guide, something which could not be foreseen in LDD. So I knuckled down to get used to Tinkercad and designed my own rods, including thinner, slightly tapezoidal main rods as well (both subsequently made by Shapeways). And for the first time - SMOKE (using a Seuthe No. 99 smoke generator, powered by the BuWizz via a modified PF cable): I finished the model just in time before going on holiday, so I had no time to shoot a video on track. Of course, I'll do this when I'm back home again. In the meantime, your feedback, comments and criticism are most welcome! As usual, high-resolution images can be found in my Bricksafe folder. If someone should be interested in the LDD file, please contact me by PM. Thanks for stopping by! Best regards, Sven Edit: Now with on-track video - see here!
We have a family tradition of creating a Lego Christmas Village with our family. This year we took it to the next level with hundreds of lights from Brickstuff and thousands and thousands of bricks. The only official set we used is the train from the 2016 Holiday Train set to which we added a battery pack, lights and the remote control upgrade. You can visit a detailed video here: https://www.youtube.com/watch?v=lRMYJzjSvjg PC152254 by Nolphi Plays, on Flickr PC152230 by Nolphi Plays, on Flickr PC152260 by Nolphi Plays, on Flickr IMG_2241 by Nolphi Plays, on Flickr IMG_2237 by Nolphi Plays, on Flickr IMG_2238 by Nolphi Plays, on Flickr IMG_2242 by Nolphi Plays, on Flickr PC152238 by Nolphi Plays, on Flickr PC152256 by Nolphi Plays, on Flickr PC152265 by Nolphi Plays, on Flickr
Well, it is great to see a forum dedicated to scale modeling, so its not more then fitting to put my latest work here: A Peterbilt 379 with Polar tanktrailer. A large (1:13) scale Lego tanker combo had been on my list for a long time. I made a small 1:22 Kenworth cabover with milktrailer in the past, and had plans for a 1:16, but in the end started work on a full 1:13 scaled combo. My 2012 dumper combo was getting old, and I wanted something new to bring to shows as well. Now I wouldn’t be myself not to take a new build a bit further again, and this one should be extremely detailed, coloful, and fitted with lights. Once more I hooked up with my good friend Rob from Brickstuff.com, and this time we didn’t make compromises. We even added a custom controller/effect board, powered by a USB Varta 10400 mAh powerpack that is located in the sleeper! There are lights everywhere including over 60 driving / contour lights, but as a special feature the underside of the chassis of both tractor and trailer are equiped with over 180 RGB LEDs to simulate the glow effect seen on showtrucks. This really gives amazing effects. A custom remote control is split into two channels that control the contour lights and the underside seperatly. Effects include color changing and strobes. It took me 5 months to build this truck and some 9000 bricks went into this, including electro-plated chromed bricks by Bricks4all.nl. My buddy Jaap Kroon (Jaap Technic) printed the stickers for me, a job well done! And a shot in the dark: A video is on my flickr stream: https://www.flickr.com/photos/bricksonwheels/