PistenBully 600

Thanks for all of your comments. @Horace T I want to display the erection process using other cranes on the next exhibition in june.

Part two - I am very sorry but I can not say why the pictures are not visible. I posted the links instead, so you can see the crane. For comparison, I placed the chassis of the Lego mobile crane 42009 next to it: Here are some pictures of both tower cranes: Liebherr 250 EC-B with 116 cm height under hook and 180 cm jib Liebherr 280 EC-H with 136 cm height under hook and 200 cm jib I hope you like the model, please leave a comment.

Hello, my current project is the realization of a Liebherr tower crane 280 EC-H in 1:18 scale. This is my second tower crane after the Liebherr 250 EC-B https://www.eurobricks.com/forum/index.php?/forums/topic/154240-moc-liebherr-250-ec-b-towercrane-118/ I wanted the crane to be modular and scale and it should be functional as well, of course. Because both cranes can be mounted on the same tower system, I was able to use the tower and undercarriage of the 250 EC-B and just copied these. This results in a tower height of 172 cm for each crane, but the tower sections can also be combined to get an even higher tower. The counter jib consists of three sections and is built modular. When the crane is erected with a short jib, a two sectional counter jib is used. But when the crane has a long jib, it needs a long counter jib. The main jib consists of a jib heel section and several short or long intermediate jib sections. At the end, there can be a short or a long head section. The two-line hook and trolley are the same as used for the 250 EC-B. The Tower top was quite difficult to build. It is in the shape of a pyramid and this is difficult to build in Lego. In addition, it has to carry much weight and force as both jibs are connected to it. Finally, it has a height of 50 cm, it is stable and has the same lattice geometry as the real machine. The most challenging part of the crane was the crane head. It contains the turntable and the cab with all electricity and connects the tower, the tower top, the jib and counter jib. So it has to be very strong, especially the turntable und all mounting points. The cab was created by using the Lego Digital Designer. For the turntable I used a new technic turntable and a bearing build out of tiles and plates. This creates quite a lot of friction but there is almost no clearance and the connection is solid. That’s it for the building process. Now some data about the crane: The turntable is powered by two L-motors. The hoist winch uses one XL-motor and the trolley winch uses one M-motor. All motors are controlled by an S-Brick mounted in the cab and powered by an AAA battery box hidden beneath the cab. With a height under hook of 105 cm the total height is about 157 cm. But the crane can be mounted with a higher tower as well. I will test this on the next exhibition in June. The length of the counter jib is between 86 cm (two sections) and 115 cm (three sections). The main jib can have a maximum length of 272 cm. In this configuration, the total length reaches 400 cm. A jib length of 313 cm creates an overall length of 441 cm but this is not reasonable any more. With a length of 272 cm the jib is stable and quite straight. It bends only a little near the head section. Theoretically, this crane is also able to climb by itself, as the 250 EC-B can do, but it is just too big and heavy so I will not test this. Now here are some pictures of the model, first with 110 cm height under hook, short counter jib and 200 cm jib. And here are a few pictures showing the crane with its full 272 cm jib and 400 cm total length.

Hi, At first sorry for the late answer. I didn't check this topic for too long. I don't have a lxf of this mechanism yet. But here you can see a video of how it works at a real crane: I just rebuilt this mechanism with Lego. I hope the video helps you. Otherwise let me know.

Hi, here are some pictures of the erection of the Liebherr 250 EC-B with 147 cm tower and 200 cm jib (in reality this are 26 m tower and 35 m jib, so it's a quite small configuration. The maximum tower heigth and jib length are 70 m). Tower and crane head were already installed: Then the counter jib was mounted: Because of the weight of the counter jib, it tilted quite a little: Then the jib and 2 counterweight blocks were attached: After reeving the hook, the crane is ready for any lifting operation. I hope you like this short report.

Hi everybody after 1 1/2 year of digital building the new version of the mountain station building (3s ropeway Kitzbühel, Austia) is now finished. The building is now modular, more detailed and should be buildable in real, because the old version was not. The building itself consists of nearly 15.000 bricks (the old version had 7.000 bricks) and it is 150 cm long. The whole mountain station including the mast and the ropeway system has a length of 250 cm and will consist of 30.000 - 35.000 bricks. I am looking forward to collect all the needed parts which will take some months.

Thanks! I spent the last days optimizing the jib by reducing some more weight and making it more straight. I will let you know when there are some more news about this model, but it's mostly finished.

Thanks! @suffocation the string is 0.15 mm fishing line. I don't have a link because I didn't buy it online. @Aleh The crane is a LTM 11200 in 1:50 scale produced by NZG: http://www.nzg.de/liebherr-ltm11200-9-5396.html

I spent the last two months in creating a climbing unit for this crane. Real tower cranes use climbing units to climb up along growing buildings during construction. The climbing unit lifts the complete upper part of the crane, including the crane head and counter jib. A hydraulic cylinder mounted at the climbing cage braces itself on a “K” shaped strut of the tower and presses the upper part of the crane upwards. This happens 5 times until there is enough space beneath the slewing ring to insert the next tower section. Here is an animation that shows the system developed by Liebherr: The climbing unit was the most difficult feature of this model. At first, with the crane in its smallest configuration with 150 cm jib, it has to lift a weight of 4.2 kilograms. The finished climbing unit has a weight of 1.8 Kilograms, so the total load that has to be lifted (including one tower section in front of the climbing unit) is around 6.5 kilograms. This load is lifted by two linear actuators, extended by strings with a tear strength of 35 kilograms. Any other string I tested has torn. The two cylinders are powered by one XL-Motor using a worm gear with 1:24 reduction. But anyway the motor has to struggle with the weight. Fortunately I found out the right dimensions of the climbing frame so that it guides the tower very well without too much friction or backlash, which is very important for the climbing process. This is because the climbing unit has to absorb all kinds of imbalance of the upper crane, which could not be adjusted by the counterweight or the position of the trolley and hook. So the climbing cage has to be very stable, too. Especially when the climbing process itself is done and the next tower section can be inserted. At this time, the climbing cage touches the tower at a length of only 15 cm. All upcoming forces have to be absorbed by this small part of the cage. But this is enough of writing – after all there was the final load capacity test with a load of 4.8 kilograms (6.7 kilograms including the climbing unit). And what shall I say? It worked! Here is a picture of the climbing cage lifting this weight: After adding some details such as walkways and a small trolley powered by 2 micro motors for inserting the tower sections, the climbing unit was finished: The lifting unit: Here is a video of the climbing process: And a video of the crane climbing back down. In real life this happens when the construction of skyscrapers is completed and the crane can be disassembled: At the moment I am improving the model and I am reducing some weight in the upper structure. The jib lost 200 grams at a length of 200 cm: All in all this is a very cool project for me and I like the result. I hope you like it, too - feel free to comment.

Hello everyone, My current project is the construction of a Liebherr 250 EC-B towercrane in 1:18 scale. The model is fully functional. The hoist winch is powered by one XL-Motor, the trolley winch uses one M-Motor and the slewing ring is powered by two L-Motors. All motors are controlled by an S-Brick. I have started building this model 4 months ago. Here the crane is assembled with 110 cm tower and 180 cm jib: The maximum height under hook is about 2 meters; the maximum jib length is 230 cm. The total length of the model with 230 cm jib is 330 cm. Here the crane is assembled with 150 cm tower and 230 cm jib: The crane can be disassembled into the same number of small parts as the real crane. These parts have roughly the scale measurements. Thanks to efferman´s turntable support ring the slewing ring is quite stable and rotates well (in the first video above the support ring was not attached yet, that is why the crane swings so much when it lifts or drops the load). The maximum capacity of the crane is approximately 400 grams in 2 fall-operation. But there is a second trolley and hook which allow an automatic change between 2 und 4 fall operation. The mechanism is the same as used for the real Liebherr fast erecting cranes und smaller EC-Bs.

Hi, a new feature is finished: The lights at the turnstiles. They consist of 0,6 mm LEDs.

1: 10 12: 6 20: 4 34: 3 4: 2 37: 1

Thanks. @Blakbird I disassembled the model into modules and small parts. Fortunately everything fit into my VW Polo :D The setup took ...maybe 4 hours. But adjusting everything and making the system work is another task and takes much longer. I only managed to get the one gondola mode to work at the exhibition. The fullauto mode did not work. But this is my personal aim for ABSolut Steinchen exhibition next year :) The carrying ropes are made of cotton which is not the best choice at all. Maybe I will change them later. The pulling rope is a 2 mm Polypropylen rope which is quite perfect and works very well. The carrying ropes are kept on tension by the baseplates which define the distance between the stations. The pulling rope is tensioned by a weight, like in some real 3s ropeways. @Victor Imaginator there are levers at the gondola trolleys and rails in the stations. These open the clamps and release the pulling rope. You can see this in some of my videos on youtube. I hope I was able to answer all of your questions. Otherwise: just ask :)

Hi, my last post was a long time ago, because i totally forgot to show you pictures and the video of the exhibition in june. Efferman helped me during the disassembly: The last four months i concentrated on other projects. But now I will continue with the 3s. Last week i did some technical and optical changes and improvements. So I will try to make the ropeway more reliable during the next few weeks. But first some pictures: The gondolas are finished now, the problem was to get all the #3 connectors in red: The walkways along the mast got a mesh floor. And in the valley station the middle pulley was modified and strengthened. The pulleys in front of the station were mdified in order to reduce the clearance to the sides. Because of this the pulling rope often jumped off the pulleys and the gondolas got stuck there. This is a mayor problem and i hope that this modification works well. The next test will show... And another detail, the safety nets in front of the station were added: That´s it for the moment. During the next weeks/ months I will continue testing and optimizing the system and also redesign the building of the mountain station in LDD in order to make it modular, buildable and more detailed. I suppose the partcount for the building will increase from 7000 to approximately 14000 bricks. But time will show...

Thanks! And after changing the batteries the ropeway seems to work well. The last two tests were good, I hope this continues.

A new video, I got the Zeta to run and it runs even smoother than the Lego gondolas: [media] [/media]But unfortunately the fully automatic operation with all gondolas does not work at the moment. Within every testdrive, there are new problems. The last 20 trys failed...but I will keep improving it untill it runs perfect again.

Thanks! Here are some more details. Signal lights on the turnstiles: And a control panel, which is mounted in both stations in the original ropeway. It can be used to control all funtions individually: It looks to massive I think, do you have ideas to improve it? And an original "Zeta" gandola in scale 1:32. It can be connected to the Lego gondola drive, but it does not fit into the valley station unfortunately. It should look quite nice to see all 4 of them running in the system...

I spent the last days building the turnstile module. Yesterday the last sensors arrived, so I was able to assemble and programm everything. And after the first test I can say that the module works fine. It contains 6 touch sensors, 3 micromotors and one RCX. [media] [/media]A friend send me leds for the position lights on top of the mast - that was a really cool surprise :) I modified them a little to make them look more like the red balls on top of the original mast. Unfortunately 2 leds are connected to one cable, so I was not able to install the new parts there yet... [media] [/media]I also installed another motor to the conveyor system to get enough power for the two wheels between the curve and turnout. So totally there are 21 motors and 4 RCX in use now. When I tested the system after this modification the gondolas hit against the turnout and some gears broke, of course the ones just in the centre of the station... I really do not know why the gondolas blockade, I did not change anything in this area. I hope i can find and solve the mistake soon, but this seems to become difficult... The old mechanics: The two tires on the left are now powered by the lower m-motor: I hope you like the news. I will try to fix the problem in the conveyor system as soon as possible.

I guess I forgot to show you pictures of the new foundation of the mountain station, so here they are. at first the disassembly: then I added about 200 technic beams and hundreds of pins to stabilize the 60 bottom plates: The new, more original foundation. The front part includes spindels for the 4 carrying ropes and also the weight which keeps the right tenson on the pulling rope: On the left the new weight, on the right the old one. Both have exactly the same weight. The other part has some nice decals. I really like its proportions and overall look...just like the real thing. I especially like this picture:

Today i made a short video, using a camera gondola. Enjoy the ride ;)

The steel construction between mast and mountain station is finished, including all the walkways. Some impressions: View from the station to the mast: Walkways and working platform on top of the mast: View from the mast to the mountain station: The trafo for running the wheels went into the mountain: A gondola passing by: Next I will try running the ropeway with one gondola and adjust everything. But I am scared of testing it with all 4 gondolas more and more, I just do not believe that the programming still fits to the system...

Thanks. @roppie11: yes I oriantated myself at the original ropeway and its techniques. I tried to rebuild them as close as possible. @krisandkris12: well, in fact my ropeway has not the biggest elevation. But this is not the most important point for me. Especially the elevation between the mountain station and the mast, as it can be seen on the last picture, is quiet small. But this is just like the original ropeway. You can see that on the following foto:

This week I have built the mountain. It consists of 5 modules and about 6000 parts. It is more than 2,50 meters long and weights more than 20 kilograms At the moment I am positioning the ropeway-system. Next i will adjust the mast and the front part of the mountain. Afterwards a new station entry mast will be build, just like in the valley station. In the end details such as long walkways between the station and the mast will be added - after ordering the needed parts ;) I really hope the ropeway still works after all this changes. Especially the robotic system with its sensors is very susceptible for mistakes. And rebuilding half the station and changing its whole geometry does not reduce this risc... But we will see :) I hope you like it.

Thanks. Yes they are too dark. And I am verry sorry about it, but the lights in my room are not the best, as you see... Also the ropeway is at one end of the room, so the light comes only from one direction. That makes it difficult to film the garaging process. You are right, Marc. The mast is in front of the station and towers above the valley. That looks quite impressive on the real one. And I am also sad, it would have been nice to meet you. @ all: The ropeway will be displayed at "ABSolutSteinchen" in St. Augustin, Germany, from the 4th of June to the 5th of June 2016. Also my PistenBullys will be shown there. http://www.absolut-steinchen.de/

I think it´s time for a great update: after rebuilding the gondola garage to make it run more smooth, I have reprogrammed the garaging system for a few times, in order of making it faster so that it takes the same time as the gondolas need for one drive around the system. This took much time and I had to reprogram the system for five times, untill the times fit together. Then I combined the 3 programs for each of the 3 robots and after adjusting everything carfully I can finally say: The ropeway works perfekt and fully automatic!!! The technical part of the projekt is almost comlpete now. When I start the system, the gondolas leave the garage and drive into the station. Then the normal driving procces starts, the gondolas run and the distances between them are adjustet automatically. After 7 minutes of running the ropeway goes into the garaging mode and all gondolas are garaged. The whole prosses takes about 12 minutes now and I just have to start everything at the begining. While the ropeway is working I do not have to do anything. The time of the whole running process can be programed between 5 and 29 minutes. Here is the video, sorry for the qualitiy... here are some pictures of the new gondola garage, in fact only the curve is new, but there were the problems before: And a video of the garage itself: I have also desinged working turnstiles for the mountain station. they will be controlled by a RCX and turn whenever the "toe"sensor in front of it is activated ;) The final setup, only the turnstiles themself will be visible, all the mechanic and robotic will be hidden inside the mountain. And a video of the prototype working: In the next view months I want to collect the missing bricks for the mountain - about 1300 at all. I hope you like the news, feel free to leave a comment :)