Wolf_Zipp

Hello, I´ve tested the clutch 2 reply before. I think it´s a fail inside: It works better together with a differential : IMG_20180106_173907 by Wolf Zipp, auf Flickr Clutch left: left axle blocked IMG_20180106_173943 by Wolf Zipp, auf Flickr Clutch right: Diff blocked, both axles same turn Clutch Center: Diff free, force on both axles, but maybe not same turns. Force incoming to the diff or the right axle. @Doug72 When you will drive a curve, you need a diff in the drive System, because every Corner get a other distance to drive.

Hello Doug72 Interesting Project. For the steering Problem : Change one Z12 wheel to the other side (both inside) and you can drive an curve. Because the wheels : they are very wide, would it better done by my solution ?? OK, I´v no diff inside. It´s only 7 L wide with 62,4 wheels. EDIT: For curve drive you need a diff in the red path.

No more Words, I´d seen it before on DB Forum. I´ve seen other Crawler crane, but this is the BOSS

Hello, some more AFOLs will build this model, they telled in the Video commends. Please Change the number when you publish it; maybe > SLJ 45018 < to Show the different model. Other way it will be mixed together. The german Forum will change next week from > Doktor-Brick.de < to > Doctor-Brick.de < I will change the link soon. Have fun to rebuild, I´ll answer your questions here.

Hi Horace T Yes build it and have fun with it! But look for the weight , it will work not good with much more weight . You have it easyer, because here is an working example.

Hello, I present my final Video, It´s not perfect, but I hope you enjoy it.

Hello Saberwing007 You have named the most Fails yourself, that´s the way to get better! My first question: Is the crane standing only on the ring ? I see no groundplate where it is fixed. You need a turntable in the middle. Without this Fixing you will get no stability for turning gear. And the crane may fall down. The Gearbox and Winches maybe build with technicbricks , 5 or 6 on top of the other. The structure may go strong to the turnpoint of the boom. I have not build this typ of crane, but i see two witch where 3 times higher, and they work The red is a crawlercrane, the yellow is a wheel-mobilcrane IMG_20170616_225429 by Wolf Zipp, auf Flickr

Thanks Jeroen, you understand the problems. I am satisfied to choose this dimension in the early stadium , I can handle the bending, lift the weight and have enough space for the mechanic parts. I can split the Mainbeam in 2 parts for carry in the car.

Hello Jeroen, thanks for liking my MOC. 1.) The Mainbeam is build with 3 plates on top each other with beams between, but the force between the sectors is only in 4 beams , 2 on top, 2 on bottom, with 2 Pins every side. The Pins bend under the force, in summary is it much. My purpose with these model was the full function, not only the 100 % LEGO solution. 2.) You see it right, there is much friction in the sliding leg. I use both Motors together by the sliding, but the rope for the leg slips thru. Foto-0122 by Wolf Zipp, auf Flickr The rope goes 1 time over the lbg connector. Version in the Video. The wheeldrive is with wormgears at every wheelpair, it will not go an freerun. Foto-0226 by Wolf Zipp, auf Flickr When I get a strong force at the leg and freerun wheels, maybe the leg jumps from the pillow ?! My answer for the Problem is an other ropedrive IMG_20170701_103928 by Wolf Zipp, auf Flickr and (you will me stone with bricks) I changed 8 rolls to ballrolls IMG_20170630_191418 by Wolf Zipp, auf Flickr This combination works without helping hand, but only with both Motors together (wheeldrive and ropedrive) There are maybe 1,5 % non-LEGO-parts in this machine: metalhooks, ropes, wires, pneumatic tubes, ballrolls and metalrings.

Hello, here is a picture of the backside with the controlbox : IMG_20170616_214519 by Wolf Zipp, auf Flickr upper side with lock mechanic and hooks : IMG_20170605_194046 by Wolf Zipp, auf Flickr Winch IMG_20170605_194024 by Wolf Zipp, auf Flickr The metal hooks are to strech the main beam to reduce the bent. Without streching the bent is over 25 mm / 1 Inch; streched it is reduced under the half. It is necessary because of the hight of Lifting from the Support legs.

Hello, Thanks for welcome and liked commends! I build an incredible MOC, but maybe it will be a one-hit-wonder , I´m not like efferman or sariel and others. Xewyz2001 invite me to present my MOC here. I build it not behind closed doors , it is public since the first ideas and the first pair of wheels here: http://www.doctor-brick.de/threads/techniker-aufgepasst-wer-nimmt-die-herausforderung-an.4969/ My first reaction was´> ít is not possible with LEGO < but the huge machine rotated in my head ... I begin to build the wheel-pair that turns around and is driving. The Facts: 18 pair wheels 62,4 x 20 with starr axle. Separation was not able. All wheels driven with 1 XL Motor for every Group ( 1 for 10 pair, 1 for 8 pair wheels ) All wheels turns with 1 L Motor / Group ( same ) Primare Support leg ( sliding leg ) Folding 1 L Motor with 2 LA in the leg Lifting 1 L Motor with 2 LA in the leg Sliding 1 M Motor with rope in the main beam Freerun 1 Servo ( same ) Secundar Support leg Folding 1 M Motor in the main beam Lifting 1 L Motor with toothbar in the main beam Winch 1 M Motor with 1 winch , 1 rope splitted to 8 ropes , to 4 hooks Pneumatic 1 L Motor with 4 minipumps in 4 tact 90 ° different ( Modded from TechnicRobot.com ) Fake V 8 in 4 tact 90 ° different ( idea from Dave42 ) Pressure valve 4 big cylinder at ever wheel group 2 small cylinder for hook lock not necessary : Parking stamp 1 L Motor with 2 LA ... this is result of a discussion , I let it inside because of the weight , for driving Control box 9V power in , Switches for every Motor, 3 pneumatic Switches LEGO 3 AC Controller for drive and winch Woodbox with selfmade display Bridge Styrodur with cement

Hello, This is not the final Video, on the sliding Support leg is over 8 kg weight, by sliding bent the leg and get more friction. This is the ground i hold the leg vertical. I have fixed the Problem meanwhile. here is the link:

Hello, I present my MOC , a functional model of the chinese giant machine SLJ 900-32. Original: length 91,8 m, width 7,4 m, 9 m high, tara weight 580 metric tons Bridge weight 900 tons 20130619084644_6093 by Wolf Zipp, auf Flickr The idea to build this with LEGO Comes from Gerd_59 in the german Forum DoktorBrick. I build it with aprox. scale 1:25 , but with the half number of wheels, because fullsize would it 3,6 m long. It is a full function model, not optical scaled. 13 Motors and pneumatic with 3 functions are on bord. Self made cabel control box with switches incl. pneumatic Switches. The Bridge box is no Lego , it has 2,56 kg weight., 60 cm x 36 cm x 8 cm The model is 2 m long, 30 cm width and high, 10,5 kg weight. The Video at Youtube will maybe seen from many members. Funktionsbild by Wolf Zipp, auf Flickr