Search the Community
Showing results for tags '1/22.5'.
Found 2 results
Sven J posted a topic in LEGO Train TechDear trainheads, Finally, my new locomotive is ready! This time, I chose a prototype from quite a distant edge of the world - an articulated narrow-gauge (1067 mm) 0-6-6-0T "Kitson-Meyer" engine belonging to the Chilean "Ferrocarril de Taltal" (FCT; written as "Ferro Carril Taltal“ on locomotive number plates), or "Taltal Railway". Ten of these locomotives were delivered to the FCT by Kitson & Co. (Leeds, UK) between 1904 and 1907, and further eight engines later acquired second-hand. Over the years, several modifications were carried out: For example, all engines were converted to burn oil soon. Water and fuel capacity of some locomotives (including No. 50, the prototype for my model) were increased by adding welded enlargements on top of the side and rear tanks. "The Railway Magazine" gives a short description of the FCT (Vol. 90. No. 551, May-June, 1944, pp.158—159): More detailed information can be found in the books "The Taltal Railway" and "Kitson Meyer Articulated Locomotives", both by Donald Binns, which were my two principal sources. In general, very few technical information about the FCT locomotives can be traced. Despite searching for months, I wasn't able to find a detailed drawing. So I had to largely rely on taking measures from photos and on one single, distorted sketch on a data sheet describing the near-identical engines from the "Ferrocarril Tocopilla al Toco" - see below. (While there are numerous photos of the sole surviving FCT Kitson-Meyer, no. 59, nearly all of them were taken during the engine's last years in service, when it was already in a very poor state of maintenance, or since it has been on display as a monument. Because of that, it's difficult to conclude how it looked in better days. Nevertheless, I hope - and believe - that the model's overall impression comes close enough to the real locomotive's appearance.) The model is held in accurate 1/22.5 scale. It consists of quite exactly 3,000 parts and weighs in at 2.4 kg. The engine is powered by two L-motors (one mounted vertically in each bogie); each motor has its own BuWizz as a power supply and R/C unit (technically, one BuWizz would suffice, but this configuration allows for longer running times). The wheels come from BBB and the lighting equipment was purchased from Brickstuff, as usual, while the rods are 3D-printed parts of my own design. Enough said – enjoy the photos! Data sheet for the similar engines (though with different brake equipment and cab) of the "Ferrocarril Tocopilla al Toco": Detailed cab... ... and also smokebox interior, showing the exhaust nozzle, the base of the chimney and the boiler tubes: The cab roof is detachable. The ventilation flap really opens, you can see the lever for the steam whistle through the hole: The top of the Belpaire firebox is also detachable, giving access to the charging sockets and the power buttons: The lower part of the cab ladder is attached to the bogie and turns with it. Note also the chain which prevents the bogie from jackknifing in case of a derailment. Advanced lighting functions, controlled via two BuWizz channels: Before starting their daily trip into the Andes, engineer and fireman still have enough time to pose for a photo with their trusty old lady... ... while one of the brakemen uses the unexpected spare time in a different way. Well, but not for long. Soon "El Jefe" arrives in his flashy Chevrolet and critically watches his employees' activities... A few shots from the building phase, showing further details. First, the bogies with the motors. You can see the leaf springs underneath, as well as the brakes and (as on the real thing) only one single sanding pipe in front of the first wheel: The firebox once again: The main frame. The ashpan contains two weight bricks, which help to keep the centre of gravity low and thus to prevent the model from tipping over. And a view of the complete technical layout with batteries and motors. The multi-coloured bricks underneath are just the building stand. Full-resolution images can be found in my Bricksafe folder. At the moment, it’s too hot in my attic for filming, and I’ll go on holiday next week; but when I’m back, of course I'll shoot a video of the locomotive and its train, so stay tuned! Last but not least, I'd like to give my heartfelt thanks to all those AFOLs who attended the development of this model with their feedback and encouragement; and especially (though we've never met in person) to my dear "pen-friend" Sergio Monai @monai, whose multilingualism and commitment were an invaluable help during the research phase. Comments and criticism are of course most welcome! Thanks for stopping by! Best regards, Sven Edit: Video now available here!
Sven J posted a topic in LEGO Train TechEdit: New video here. Dear trainheads, Some time ago EB member @Plastic_Goth presented his digital model of Ferrovia Eritrea's Gruppo R.202 shunter. I immediately fell in love with that cute little prototype, and I knew I had to build a model myself, in slightly larger scale for 45 mm garden railway track. Well, here it is! The prototype was built in 1927 by Breda in Milan, Italy, for shunting service on the 950 mm narrow gauge lines in Eritrea (which was an Italian colony at that time). In total, eleven class R.202 engines were built; several lococomotives are still in operation today (the „R“ stands for „scartamento ridotto“, narrow gauge). My MOC represents a R.202 locomotive in ca. 1936, after the original lifting injectors (inside the cab) had been exchanged for non-lifting ones (below the cab), but before a new numbering scheme was introduced, dropping the „R“ in the class designation. The model is held in accurate 1/22.5 scale and driven by a single L-motor working on the second axle. It features front and rear lights (from Brickstuff; separately controllable for the left and right engine side) and a Seuthe no. 99 smoke generator. All funcions are powered and remote-controlled by a BuWizz 2.0. The rods and valve gear parts are 3D-printed parts of my own design. The model consists of approx. 1,400 parts and weighs just over 1 kg. Compared to my previous models, it is much easier to handle and maintain, due to its "small" size, but still has amazing pulling power (10 four-axle LGB cars are no problem). So I think it will become my standard "everyday" engine... And here are the pictures: Prototype data sheet (drawing not accurate and not to scale): While the fireman is carrying out a minor repair on the smokebox door, an administrative officer arrives in his brand new Fiat Topolino (modified design by Peter Blackert): Two tiny Italians... Some views of the cab interior. As the BuWizz is located in the position of the firebox, the roof and the boiler backhead can be removed for access to the power button and to the charging socket: The frame: Three weight bricks are installed inside the frame and boiler, thus increasing traction: The half-plate offset in radius between smokebox and boiler required some unusual (but surprisingly sturdy) SNOT-work. A video of the model on track will follow. For now, here is a short sequence of the engine on the roller test bed: More and high-resolution photos can be found in my Flickr album. Comments and criticism are most welcome. Thanks for your interest! Best regards, Sven