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Hello everyone, new year, time for a new train MOC, which is actually a tram. Budapest bought last your 37 new trams from the spanish CAF vechile manufacturer, some of the trams arrived by now and working with passangers as well. There are 25 shorter ones from the Urbos 3 type trams, with 5 sections, 3 with wheels and 2 just suspended between the other three sections. Longer ones are now actually the longest trams of thw world with their 56 meters, 9 sections with similar arrangement to the shorter ones. I've designed the shorter tram in my Lego Digital Designer and used technical drawings to replicate the tram as good as possible from LEGO-bricks. 1. Side view. Maybe you notice that the windows have different sizes and positioning, according to the technical drawing I got (unfortunately I'm not allowed to publicate it) there are two different sizes for windows. Another difficulty was the height of the glass in the doors, it obviously end higher than the glass of the windows on the real thing. 2. The entire row for windows is built in SNOT. The SNOT row has 6 studs height, 4 studs for glass, 1-1 studs are black. Doors' SNOT tehcnique is connected to the main SNOT row, but the top of the door is 1 half plate and two plates instead of one stud to insert a trans black tile there for the door's glass. 3. Half plates are connected to the roof. Driver's cab's door is able to opened manually. 4. Driver's cab. 5. Approx. 2300 parts. Won't be a cheap MOC, will it be? Comments and critics, as always, welcome.
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Hi all, few months ago I introduced my CAF Urbos 3 type tram, delivered by the spanish company for Budapest public transport company in a LEGO Digital Designer format. Bricklink orders arrived and in the last two weeks I could finally have the tram for real instead of LDD print screens. In this topic I'll show the building tricks I used in the vechile (I dare to say it features some really unique ones) and how it was build. The tram is 8 studs wide, with the length of 7 and half normal length straight tracks. It consists of around 2500 parts in the cost of around 300$-s. The LDD-design took around 40 work hours, the building and getting rid of some failures in LDD-design (such as suspension and coupling) took other 25 work hours. I plan to implement PF-based indoor lights and front/tail lights later, keeping the 9V driving system. So, an overall photo: Tram has five sections, number 1,3 and 5 have wheels, 2nd and 4th one are suspended on the neighbouring sections. First and last section is powered by 9V train motor. First and last section.The yellow bricks, plates and tiles next to the wheels, the bottom and the roof of the tram are built in normal direction, but entire windows, doors and narrowing front wall is built in SNOT. Note the yellow tiles under the door and driver's cab looking downwards and the black hinge plates serving as life-saving-frame. And yes, real tram exactly has the same long nose. Non-driven wheels under the middle section. First I used simple train wheels, but then I discovered that it runs straight on a point set to curve, so I replaced traditional metal-axle wheels with PF-train wheels and axles, because the gauge between wheels can be set up in this configuration to avoid friction and derailments. Front section hinge solutions, hinge parts marked with red circles. The middle hinges prevent the two sides of driver's cab from dislocation. Driver's cab door can be opened. It was hard time to get two of these airplane windows in black, but the real tram has a little window for selling tickets with rounded edges and black frame. So, there it is. Red circles show where the roof and the body of the tram can be connected. At the front there are hinge brick 1×2's to prove the needed angle for front window, other hinge plate 1×2's lock the front window to the roof (yellow ones, no red circles around them). White plates connect the two parts at the driver's cab. On right there are some SNOT 1×1 bricks with side studs in the SNOT window panel. Tricky part was this. The slope 1×2×2/3 is needed at the beginning of the narrowing part, since a simple brick or tile won't fit there without a gap. But the little 1×1×2/3 yellow slopes look forward at the front of the tram, I turned 180° with two headlight bricks inside the structure. A simple pantograph design using hinge plates, cutable 3 mm rigid hoses and minifig hands. Top part is built from two ski plates. You can also take a look at the coupling system, SNOT panels and slope bricks grants you can't see through the coupling from side view, but it allows the tram to take curves. I experienced the most problems with the coupling system. The middle cars have some weight and a single connection with technic beam or plate let the middle car go a little down, get stuck on switches and I hated when the line between black and yellow wasn't exactly on a horizontal line as I expected to be. Also I had no space at the bottom since it is a low-floor tram to build connection between sections, so I had to figure out something on the roof. Two rigid connections are between the cars, one of them is a 2×8 plate, connected with 2 pieces of 2×2 turntables to the wheeled sections. ...and the second connection with a non-shown-here 1×7 technic beam. It also caused problem that the weight of the middle cars often pulled of the 2×2 tile with technic pin from the middle car roof, then I discovered these fantastic 2×4×1 bricks with technic pin (two next to each other on left, locked with 2×2 tiles to the yellow curved bricks). These bricks with 2 studs × 4 studs area connecting to the roof are strong enough not to be disconnected by the weight of the middle car. Only disadvantage that the tram can handle only little horizontal changes - no more than 1 plates / 32 studs slope is allowed. Middle car SNOT solutions. Note that the windows on these sections are a little taller then other windows on wheeled sections. They are one plate higher, and to have this height the SNOT 1×1 bricks under the windows are replaced with non-SNOT bracket, plate and trans black tile. Half plate height of bracket, 1-1 plate height of black plate and trans-black tile (2,5 plates) gives the width of a single stud. Other solution I'm really proud of is the top of the doors. Door glasses are one plate higher then the top line of windows' glass, but doors wings are separated be only one SNOT plate, it was a hard quest to put one more layer glass to the top. On the top there is a SNOT tile locked between trans-black plates in the door, and the remaining stud of the tile is filled with half-plate bracket, 1×2 black plate and 1×2 trans-black tile (2,5 plate height, which works exactly the same as described above to have the 1 stud in height). Bracket is connected to white roof's SNOT 1×1 brick with one stud on side. The 1 plate gap between the two brackets is build leaving not 2, but 3 plates between the SNOT 1×1 bricks with one stud on side. Headlight bricks connect the SNOT roof to the non-SNOT roof-parts. Coupling in work. The tram is tested be now, and it is working on every single LEGO-track geometry. You can find a video here (Facebook-login required): https://www.facebook...53529083453657/ (and I'm not sure, maybe a Membership in LEGO Train Fan Club Facebook-group is also required, but basically every content is set to public in this group) Commenst and critics, as always, welcome.
