PistenBully 600
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[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
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. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
After many modifications of the lift and door drivetrains the LiUP finally works well. The Powered UP Hub is programmed via Pybricks and detects both stop positions at the top and bottom of the tower by mechanical end stops. Now just a few printed labels are missing. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Also the crane features a signal horn with the original sound of a Liebherr tower crane: The latest feature is the Liebherr LiUP crane operator's elevator: I designed the cabin and rails in LDD and developed the mechanics with real bricks to ensure everything works well. I bulilt a few prototyps of driving units. The first ones should consist of a battery box, motor and switch. The switch should change the driving direction by hitting a brick on the tower when reaching the top and bottom end position which switched the motor to drive in the other direction. The first tries went well, but when adding more weight to the driving unit, as the later cabin would, the switching at the upper endpoint went unreliable. Anyway here is a video of that mechanism: To have a better control of the switching point and to add stops at the switching positions, I changed the driving system and used the new Powered Up parts. So I bought some of them and last week the parts for the rails and the cabin arrived. The tower sections became smaller platforms. So like at the real crane, the operator can still use the ladders to get up to the cab. Here are the tracks for the tower sections: The power supply section in the bottom tower section. The real LiUP is also battery powered and can be loaded here. The cab: The next step is to programm the Lift using Pybricks. I hope that works, because I have never used it before. This is my first MOC using Powered Up so far. The goal is that the LiUP drives up the tower, stops, opens the door, waits a few seconds, closes the door, drives downwards, stops, opens the door again etc. So that the lift goes up and down again and again automatically. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
In the meantime the 2 meters of driving tracks have been built and the crane can drive well on them. I also built a grab so that the crane can lift the rails and assemble them by himself. Here are some impressions: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
@Metagross555 well, I had the same feeling, so I used l-motors instead. Maybe I will try m-motors later, just to see if they would also work. With both motors powering the two bogies on one track, the undercarriage alone drives very nice. Also when it is loaded with a box containing 8,5 kilograms of Lego, which results in a total weight of 10,3 kilograms, it drives well. So the next step was to assamble the liebherr 250 EC-B with 136 cm height and 200 cm jib lengh. It drives very smooth and there is no sign of a dangerous situation during turning the crane or start/ stop driving at full speed. Also the speed is nice. The "Kreicom" crane tracks I showed on the renderings above will come later some time, because they are quite expensive to buy. But they will definitely come. Here is a video of the crane doing its first steps: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
The next development is a rail mounting for the cranes. It consists of the existing 8 x 8 meter undercarriage in combination with 4 bogies, two of them driven. The tracks are build like the crane tracks by Kreicom: https://kreicom-english.weebly.com/ Liebherr tower cranes often use this tracks. They have two lengths of tracks: 6 meters and 12 meters. I built both of them with lengths of 33 and 68 cm. A 90° turn is also in the works. In the following pictures the tower has a height of 220 cm and the track lenght is about 204 cm. All in all the LDD-file consists of around 6800 bricks, one meter of track consists of nearly 2000 bricks. I am curious if the bogies are strong enough to support the weight of the crane and move it. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Well yes and no, the curving is quite intense, it has not been this strong at the 250 EC-B before, I think. The problem is the upper profile of the intermediate jib section which reduces the heigth of the jib. Beause of its angle it is a little too short (just 1-2 milimeters). This pulls the following jib upwards. But this is quite hard to adjust with Lego parts - at least without rebuilding the whole jib. Yes its a Grove, to be exact a Grove GMK 7450/7550 in 1:50 scale produced by NZG. Thanks! Yes it is inspired by real clamshell buckets, especially by older ones which are mostly operated by tower cranes. Here you can see one, it has the same rope arrangement to increase the closing force: Unfortunately I am not sure how the mechanism on this bucket works. But there are several different mechanisms. On my bucket I developed my own mechanism by try and error and it works pretty well. I’m not completely sure, but it looks like the 1x1 cheese wedge connected to the “tackle block” catches on the liftarm that controls opening and closing. Not sure how it disconnects from the liftarm, though. Exact, the 1x1 cheese wedge at the 3 long crossaxle with stud is the secret. When the open bucket is put onto the ground, the "tackle block" gets lowered even more, untill the axle is pushed inwards by the lever with the 1x2 wedge outside the bucket (on the right on the pictures below) Because of this, the 1x1 cheese wedge hooks in below the upper half pin in the central, vertical 15 long liftarm and by this the grab gets closed. When the closed bucket gehts lowered and put onto the ground, the "tackle block" also gets lowered a few millimeters more, untill the cheese wedge gets pushed onto the lower half pin in the central 15 long liftarm. because of the angle of the wedge, it pushes itself outside along the 3 long axle to get beneath the half pin. When you put tension on the rope at this state, the "tackle block" can be lifted again without grabing the upper half pin and the bucket opens. To optimize this processes, there is a small Lego train weight at the "tackle block". I hope you can understand what I mean. Also see the pictures below, they explain the function quite well. Here are two pictures which show the mechanical functions: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
And here is a new tool for my cranes, an automatically opening and closing single rope clamshell grab. It has a good size and reasonable weight for the operation with my tower cranes. Because of its mecanical structure it has a high closing force and fills itself to nearly 100% almost every time. It can grab a wide varity of Lego parts, also tiles and parts which are too large to fit into the closed bucket. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
@Pattspatt Thanks! A few weeks ago I combined parts of both cranes to create an EC-B of the old generation with the cabin inside the tower. This 180 EC-B is erected with 200cm of jib, which seems to be the maximum jib length for this crane: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I designed a new basement for the crane as an alternative for the existing undercarriage: alternative feet: comparison to the existing undercarriage: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Now the small remote control has been build and the receiver is mounted at its place: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
During the last months I did some more optimizations to the model. It got a new, smaller trolley und the jib lost a little weight again. By adding a new jib head, the maximum jib length increased to 253 cm. The total length of the crane in this configuration is 353 cm. The crane is controlled by an S-Brick by using a smartphone or game pad. But in my opinion both of them do not offer a smooth and sensitive control for the crane functions. For a long time I also had the wish to control the crane in a more realistic way. So in the end of 2019 I started to work to make this wish come true. But what does this mean? Well...real tower cranes are controlled by a crane driver in the cabin - or by using a remote control. So the next logical step was to buy a remote control for real tower cranes and to make it control an SBrick :D These transmitters are not cheap, new ones cost a few thousand euros, used ones often cost many hundred euros and they are commonly sold as a package consisting of the radio control, the receiver, battery, charger and adaption cables to connect the receiver to the crane. I got one of those sets in a good shape for a good price. It contains a HBC Radiomatic FST 740 readio control which I used to realize this project. Fortunately I have a workmate who has good skills in electrical engeneering and programming. He built and programmed a micro controller which takes the inputs of the joysticks and buttons and sends them to the smart phone via bluetooth and the phone sends them to the SBrick. This gives me the possibility to use the radio control to operate any SBrick-controlled Lego model. And because the smart phone is still used, I can change all parameters whithout changing the programming of the micro controller. The next step was to upgrade the radio control. It had 2 joysticks, the left one with 2 axes and the right one with only one axis. Also they can only switch between on and off. I bought new joysticks with potentiometers for a proportional steering of 4 functions in total. Then I used a CAD program to develop the connection between the joysticks and the housing of the radio control, as well as the connection between the sticks of the joysticks and the existing sticks of the remote control. These adaptions are built out of 3d-printed parts, threaded rods, nuts and lathed thread adapter parts. The great advantage of this adaption is that the outside look of the radio control did not change through the modifications and I did not even have to do a new drilling into the housing. The original joysticks: The new joysticks: The remote control offers 4 proportional functions on the joysticks and 7 buttons, so 11 channels in total. For the power supply I used the original HBC rechargable battery which can be inserted in the bottom of the radio contol. Here is the finished remote control, I added a HBC hip belt for more wear comfort during operation: And I also designed a Lego version of the system in the LDD :D For the final test I assembled the 250 EC-B outdoors with a heigth of 290 cm and a total lenght of 353 cm. And here is a video of the crane during operation: [media] In conclusion I can say that the crane can be controlled much more smooth and sensitive than ever before. And in fact it is also much more fun using the radio control :D I hope you like the news. Feel free to leave a comment. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Thanks! Here is the new counter jib: comparison between the old and new one: The new counter jib is nice stable and only the end with all the counter weights bends a little. But that was expected and it is acceptable. The hoist winch has a nice speed which is similar to the old winch. In general it seems to have less hoist power than the old one, but the crane still has its full lifting capacity. Next I will ad some more details and do minor modifications to the counter jib, but it is mostly finished and I am happy with the result - in its look and function. What do you think of it? -
PistenBully 400 Park 1:12
PistenBully 600 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi, this is my current projekt, the PistenBully 400 Park as a RC scalemodel in 1:12. I started this projekt a month ago and since yesterday it´s almost finished. Functions: -drive -lifting blade -tilting blade -panning blade -lifting tiller This PistenBully is created to build funparks in snow resorts, so its blade has a bigger range in all directions than the standard PB 400. My version should have some more bladefunctions than the PB 600, so the blade can move in two more directions than my PB 600s blade. I have bulit the Parkblade, which has two forks to lift and carry park equipment: Some pics of the PB 400 and 600: and two videos: when I tested only the chassis with the blade, it was able to push more than 2,5 Kg and climb up a slope of about. 45° please leave a comment ;) -
PistenBully 400 Park 1:12
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Here are some new pics in artificial snow at the Faszination Modellbau exibition in Friedrichshafen, Grermany, in November: -
PistenBully 600w 1:12
PistenBully 600 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi, I want to show you my model of a PistenBully 600 in 1:12. I wanted to create a remote controlled scale model with many details and I think after 1 1/2 years of construction I reached this aim. Functions: - drive - lifting blade - lifting tiller -motorized tiller auger -working winch with up to 7 meters of rope -working snow blower with a range of up to 60 cm -motorized windshield wiper Alpin Flex Tiller: Winch: working snow blower: I hope you like it -
PistenBully 600w 1:12
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Here are some new pics in artificial snow at the Faszination Modellbau exibition in Friedrichshafen, Grermany, in November: a video will follow soon... -
Doppelmayr 3s Gondola Ropeway
PistenBully 600 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Hi everybody. My current project is the construction of a fully functional 3s ropeway. Since a few days the main functions are working so I want to present you the actual point of work. At first some numbers and facts: - length: about 5 meters, in the end maybe 5,30 meters - number of gondolas: 4 - total length of rope: 22 meters - distance betwen the stations: 2,90 meters - number of masts: 1 - heigth of the mast: 78 cm - untill now approximately 10.000 bricks are used, in the end it will be around 27.000, I think - power supply by 3 RCX robots and 3 transformers - 16 motors are used (12x m-motor, 4x 9V-motor) - building time untill now: 14 1/2 months There are 3 big components/ bulidings: the valley station, the mountain station and the mast. The valley station has been built after the Gaislachkoglbahn in Sölden, Austria: http://www.myheimat....47,2444094.html It consists of about 3500 bricks. The valley-station is more compact and technically less complex than the mountain-station. It is based on 2 48x48 baseplates. It is powered by 4 m-motors and 2 9V-motors using 2 transformers and 1 RCX. Its technology illustrates the processes in normal operation: When the gondola enters the station the the gondola releases the pulling rope and gets slowed down by driving wheels. Then the gondola doors open automatically. The gondola drivs around the curve of the station, then the doors close, the gondola gets accelerated and the pulling rope is coupled into the trolley again. Here is a video of the valley-station working: The mountain-station is build mostly identical, but it has some additional features. The tension of the pulling rope is controlled here, by simply using a wight. Also the gondola storage takes place in this station. This process is full-auto, controlled by 2 RCX and driven by 4 m-motors. You can see it working in this video: Here is the mast, it is constructed after the mast of the 3s Kitzbühel: I have also deigned the whole Kitzbühel station-building in LDD and I´m looking foreward to build it in real in 1-2 years. The original one: and a rendering and some screenshots of my model: The station has a length of 2,70 meters and consists of about 20.000 bricks, including the ropeway system itself. One picture of the ropeway system of the mountain-station (the picture was made in may, so it isn´t the most current one...) During the last weeks I did many testdrives untill I was able to adjust the system that controlls the distance between the gondolas. Since a few days this system works pretty well and so the ropeway works perfect with all 4 gondolas. Here is the newest video: I hope you like my ropeway. This is just a short overview. If you want to see more pictures and videos, check out my youtube-channel https://www.youtube....3dTrMEnnlwQGbpw Also you an find pictures since the first day of construction here: http://www.doktor-br...lbahn/?pageNo=1 That´s it for the first, feel free to comment ;) -
Doppelmayr 3s Gondola Ropeway
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
@skiing rails Thanks! The white gondolas are from the ropeway in Koblenz, Germany, the black ones are from the Gaislachkogl ropeway in Sölden, Austria. Both were released and sold at the ropeway shops in the year of opening (in both cases 2010). Fortunately the Koblenz gondolas were available for a few years longer, so I could get some of them. But since a few years both cabins are sold out and they will not be produced again. There is a very small possibility of getting one at ebay etc, if one is offered there. But that is also very rare and I have not seen one for sale for the last years. I noticed that I did not update this topic for way too long. So here are some pictures and videos I uploaded during the last years. 2016: The ZETA gondolas from the ropeway in Koblenz: 2017: ABSolutSteinchen exibition in Germany in june: Faszination Modellbau exibition in Friedrichshafen, Germany in November: 2018: -
[MOC] Liebherr 280 EC-H tower crane 1:18
PistenBully 600 posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
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. -
[MOC] Liebherr 280 EC-H tower crane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
@Cameronius Hi. I do not know the exact amount of parts I used, also it depends on the tower, jib and counterjib configuration. In the configuration shown on the pictures below, the tower and base consist of 2600 bricks, the total crane as shown could consist of around 4000-5000 bricks. The 280 EC-H has been shown at the model exibition Ried (Austria) in october, as well as my Liebherr 250 EC-B. The EC-H had a jib length of 200cm (300cm total length) and a total heigth of around 280cm. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
I spent the last weeks on optimizing the climbing cage in order to reduce weight and to make it look more realistic. In the end the cage lost 300 grams of weight and it was able to lift the whole crane with its full 240cm jib. The weight the cage has to lift in this configuration is 6240 grams (6760 grams with an additional tower section hanging on the trolley in front of the cage). The whole crane lost a lot of weight during its optimization this year. In the biggest configuration with 240cm jib the upper part, which has to be lifted by the cage, weights only 40 grams more than the crane with 150cm jib befor the optimization this year. Only because of this loss of weight it is even possible to lift the upper part with the full jib. Here is a rendering of the old cage: And here are some pictures of the new cage and its first climbing steps with the full 240cm jib: Some pictures of the model exibition Ried (Austria) in october: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
During the last days I developed a new counter jib using the Lego Digital Designer. The aim was to make it more straight, to reduce the weight and to make it look much more like the real counter jib. The new counter jib is build out of usual bricks and plates - instead of technic bricks - to create a much better look. Unfortunately the new jib is one part, both the old jib and the real counter jib consist of two parts which can be taken apart for more compact transport loads. But this was not possible for the new counter jib because I wanted it to be straight and in addition a possible connecting point would not be easy to realize with the new building technique. The new hoisting winch drum has the scale measurements and is driven by a L-motor. The drum itself has an integrated planetary gear with 1:4 reduction to increase the load capacity of the crane. During the next weeks I want to collect all the needed bricks to build the counter jib in real. I hope it will be as stabile and strong as needed. I think the final design meets the real counterjib quite good - what do you think? Here is a picture of the real one for comparison (the upper crane); source the old counter jib: The new version: The real hoisting winch drum uses the old turntables. But these are no separate parts in LDD. -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
The next point to improve was the hook assembly for changing the number of falls of rope. The old mechanism worked quite fine but it was big, heavy and did not look the most realistic. So I rebuilt the trolley and hook block in order to make it look more realistic and to decrease the size. Also the changing operation is much more smoothe now. Two fall of rope mode for light loads: Four fall of rope mode for heavy loads: Trolley in working position (red flaps point downwards) : Trolley in switching position (red flaps are pushed apart to indicate that the switching process is working properly and to indicate the end of the switching process - just like the real crane's mechanism: And a video showing the switching process: -
[MOC] Liebherr 250 EC-B Towercrane 1:18
PistenBully 600 replied to PistenBully 600's topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Since may I am optimizing and rebuilding the crane. First I built a new hook block an trolley. Their measurements fit to the scale measurements of the real crane. In addition they have less weight now, what is good for the crane performance. Next I optimized the jib. This means that the connection points between the liftarms along the top of the jib and the technic bricks along the ground sides of the jib became smaller and less heavy by this. I also changed the profile and lattice work of some jib sections in order to make the jib more straight. Befor this modification the maximum usable jib length was 200 cm. During a former test with a 230 cm long jib it bended quite a lot and the end of the jib hang quite down. But because of the mentioned improvements the "standard long jib" configuration for work and exibitions increased to 240 cm jib. With this lengt the jib is still perfectly straight and the crane needs less counterweigth than the early version with 230 cm jib. The new maximum jib length is 270 cm - as much as my Liebherr 280 EC-H with tower top and pendant bars has. But the jib of the 250 EC-B is even much more straight. So this modifications brought a hugh benefit to the size and performance of the crane. In the next step I built a complete new crane head with the slewing ring and "tower top". The slewing ring is now 100% built of lego and the slewing speed was decreased using a 1:3 gearing before the worm gear which turns the turntable. This decreased the slewing speed to a very nice speed range from a fine-positioning slow speed up to a quite fast but good controlable and scale top speed. Here are some pictures which show the crane after this first improvements at the ABSolutSteinchen exibition in june. The crane was assembled with 240 cm jib (340 cm total length) and a heigth of 211 cm. It worked a lot at during the exibition and it was a lot of fun operating it and sleving overhead the other exibitors :D First a picture of the new crane head: Here are three videos of the crane during the exibition: