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Sven J posted a topic in LEGO Train TechDear trainheads, It’ s been a very long time since my last steam locomotive ... But now, after tinkering with the design for almost two years, I’m very proud to present my 1/32.5 (gauge 1) model of my all-time favourite engine, the utterly handsome Swedish Litt. (=Class) S1 2-6-4T. For those who are interested, a few words about these locomotives first: My model is held in exact 1/32.5 scale. It consists of approx. 2,400 parts and weighs around 1.4 kg. The locomotive is driven by two vertically-mounted PF-L motors, which are directly connected to the 2nd and 3. coupled axle; the 1st coupled axle is driven by the rods. A BuWizz 2.0 is used for power supply and remote control. Lighting equipment (directional headlights and cab light) is from Brickstuff, while the wheels were purchased from BBB as usual. The rods and valve gear parts are 3D printed elements of my own design. But let the pictures speak for themselves now: Two two-cylinder beauties “Made in Trollhättan” … The coal bunker is detachable and gives access to the electronics. With the coal bunker detached, we can get a glimpse inside the cab: The main frame is as realistic as possible, with all the prototypical cutouts. The leaf springs are connected by realistically pivoted compensating levers (a bit crazy, I know). The leading truck and the rear bogie are built using a combination of liftarms and studded parts. The bogie is laterally slidable and with off-centre pivot pin. This enables the model to negotiate LGB R3 curves (1,200 mm radius) despite having flanges on all wheels. Road numbers and builder’s plates are printed on self-adhesive gold foil: As an extra gimmick, the model has a synchronised sound generator from Mobatron in Switzerland. It works with a a tiny optical sensor and a reflector disc on the 1st coupled axle, which triggers 4 exhaust blasts per wheel revolution. See and hear in these function test videos: And here she is with the entire train: Scandinavian nights are long and dark, so there need to be decent lights on the train… The freight car and 2nd class coach are improved older models, while two slghtly different 3rd class coaches were built from scratch. As usual, I’ll make an on-track video of the whole train soon. High-resolution images and many pictures from the WiP phase can be found in my Flickr album. Thanks for stopping by! Kind regards, Sven EDIT: Video now online!
Hi all, For the video I’ve yet to make featuring my Swedish Litt. S1 locomotive, I felt some background decoration was needed. So I chose to build a Swedish vintage truck in 1/33 scale: a Scania-Vabis 355, one of the first cab-over-engine trucks (though not a true one, as the engine remained directly behind the front axle and the driver had to squeeze in beside/behind it). Some parts of the model are a bit fragile, so I didn’t want to turn it over after completion. A render image has to suffice to show the bottom side … Thanks for your interest! Best regards, Sven
Sven J posted a topic in LEGO Train TechHi all, Being a steel and mining industry aficionado anyway, this year’s OcTRAINber contest struck a chord. So I chose to design a 1/33 gauge 1 model of a coke quenching locomotive. A… what???? Please bear with me if I’m not going to explain the industrial cokery process here; it’s too complicated to do this in a foreign language. Anyway, the thing is: There are special locomotives for that process. They are usually very small, electric, and typically characterized by a bizarrely elevated cab and lateral pantographs. Here’s a drawing of the prototype I chose, a locomotive that was built by Jung in 1927 for the „Zeche Sachsen“ colliery in Heessen (now part of Hamm) in Germany: You’ll immediately recognize the main problem: The engine is extremely narrow and, as if this wasn’t enough, has an outer frame covering the wheels. In 1/33 scale, the frame and locomotive body have to be 8 studs wide, while the outer edges of the wheels already are 7 studs apart… that gave me some serious headache. But finally I found a solution. Here’s what the digital sketch looks like at the moment: Rather sparse interior – after all, all the engine has to do is to shuffle back and forth on a single straight track… The model is fully motorized with a PF M-motor, a BuWizz (only a brick-built dummy in the picture) and a worm gear for slooooooooow shunting: Now I’ll have to gather parts, start building and hope that I’ll be able to finish until November 15th… Thanks for stopping by! Sven