Posted on 34 Comments

Liebherr LTM11200 WIP


Time for another update on my Liebherr crane. I have made a first version of the 4 stage boom. The thing is massive! It weighs over 4 kg, it has 90 long panels (3×11 curved, 3×11 flat, 5×11 flat) in it and it reaches 2.5 m when fully extended.

Liebherr LTM11200
This is the fully extended position

Due to the weight it is now impossible to lift the boom with just the cilinders. So I added a system with rope and pullies to lift the boom. There is some fearsome bending of axles in the current setup when the boom is lifted, but it works.

I devised a new way of extending the boom to maximize the size of the inner sections, but also this system is struggling with the sheer weight of it all.

Rotating the superstructure has also become impossible with out a helping hand.

On the plus side, the whole crane can stand on it’s own when fully extended, which is an awesome sight. Also the speed of the ropes is not as slow as I feared.

Even though it looks finished, it is not. There are still quite some things to improve:

  • The rope for lifting the boom and the extention of the cilinders need to go to the same group of RC operations (if you remember there are 4 sets of 3 functions each in the superstructure).
  • A driving mechanism for extending the inner sections needs to be made that is strong enough (at least it is self braking now)
  • The structure where the pulleys in the rear are connected to needs to be strengthened (there are even some form-locked constructions that are being pried apart)
  • The stabilizer arms need to lift further upwards
  • The small LA’s in the stabilizer arms need to be replaced with big LA’s (that will bring the total amount of big LA’s in this model to 12)
  • The rope for the hook needs to be properly guided along the boom
  • The legs to put the boom on when moving the boom from the carrier to a transport wagon need to be designed and added

Here is the heavy road configuration version (without the extra pulleys to lift the boom):

Liebherr LTM11200
This is the road configuration

Finally I am pleased to announce that the work on instructions has started. So please stay tuned.

Leg godt,


34 thoughts on “Liebherr LTM11200 WIP

  1. good day..
    would like to compliment you for the cool Crane, LEGO Technic, LTM11200 and have a question …
    what would it cost me to buy the Instruktion?

    there is my e-mail

    Kind regards Sacha

    1. Hi Sacha,

      I haven’t decided on the price yet. Once the instructions are complete I will determine the price.

      Best regards,


      1. Hello,
        when do you think the instructions will be ready?

      2. I try to get them before the end of the year, but I still have to solve a few issues in the boom, before I want to make them available.

      3. Hi I have the LTM1200 instructions will the new set be an upgrade or be available at a discount in this situation
        thanks Steve

      4. I’m not sure which new set you refer to.

      5. when the WIP’s on the LTM 1100 are complete will this be a free plans upgrade or will a new set of plans need to be bought. I have the lower priced plans for the LTM 11200 at the moment and am close to being able to build it with over 98% of the parts I am also wondering would I be better to wait for the new plans what is the timescale likely to be?
        Many thanks

  2. Awesome job Jeroen. Looking forward to see this crane finished.
    GL with the instructions.

  3. Awesome job, once instructions are available I will definitely buy one

  4. Great Crane, do you have any update about the instructions. Are they available soon?
    Best regards

    1. Hi Marco,

      The instructions are in the final stages. They are over 1000 pages, so you can imagine it takes some time to verify them all.


  5. Hello Impressive and beautiful LTM 11200, That the people have a little patience with the instructions the important thing is that it works well and not to burden the poor Jeroen. encourage and thank you for your patience.
    Happy Holidays

  6. Donde me recomiendas comprar las piezas para ir buscando?
    Podéis recomendar alguna web.
    Por si alguien quiere contestarme dejo mi correo.

    1. Hi Abraham,

      You can order individual parts via or


  7. You are more than a master builder you are a master craftsman! This set is breath-taking! I was hoping to get on the list to be able to purchase the instructions and parts list if I could please! God bless and good designing!

    1. Hi Frank,

      Thank you for your kind words. If you start following this blog you will get a message the moment I post when the instructions are finished.


  8. Hey Jeroen! Happy Holidays! How’s going with instructions? How long approx would it take to finish it? Thanks!

  9. Hi. I have bought your instruction manual for the liebherr. But I think that it is quite a job to get hold of all the bricks, unless you cheat and buy them via one of the chine websites.
    Looking at your part list there are about 257 different bricks and a total of approx 7700.

    1. True, bricklink and brickowl are great sources for getting legitimate parts though

      1. I agree but it seems impossible. Example from Brickowl: The 4 pieces of the 36 tooth gear – item no. 32498 will cost DKR 8.87 for one used piece plus DKR 31.05 in shipping cost. This dealer only has one piece. Another have 2 new pieces for DKR 65.76 plus DKR 24.66 in shipping This fact makes it impossible to achieve legitimate parts unless you are millionaire.
        The examples are for pieces bought within EU (to avoid extra tax).
        DKR = Danish Krones

      2. These parts you can also buy directly from LEGO in their customer service section of their website (Missing parts / buy new parts). For some parts this is worse than bricklink, for others it is better, but the shipping is always very cheap.

  10. I have a question about assembling the gear. How can I mail or upload a screendump?

  11. hi I just saw an updated video of the crane is it possible to get the addendum for the counterweights? any help is gratefully appreciated

    1. I’m sorry that is a fanmade modification. I do not have the design for those.

  12. hi
    can you tell me is it possible to use the control system from the 9800 excavator to control this build as I am almost there collection the parts (97.8%) most of the cost is motors and IR controllers which I hope to make redundant by using both the 9800 ones and the ev3 servo motors if possible
    thanks steve

    1. I don’t think so, since the motors all have a different size. Especially the M-motors are smaller than either Control+ or Mindstorms motors.

  13. I was wondering if there was more detailed instructions for how to run all the string on the boom section? Having some issues understating were all the strings go.
    Thank you

    1. Yes there is. Here is a link to a more elaborate description:

  14. When will the instructions be out and the price

    1. The instructions are available in my webshop:

  15. Do you have the instructions and parts list for the lattice boom for the ltm1120 please

    1. These are modifications made by a fan. I don’t have the instructions for this alas

  16. hello

    can you confirm the the site is legit so i can purchase the Liebherr LTM 11200
    Model – Liebherr › liebherrshop › cze › modelle

    Items 10 – 18 of 28 – Price: €301.21. Liebherr LTM 11200-9.1. True tothe original, functional model of the world’s most efficient mobile crane. With eight-section …
    Missing: none ‎fake ‎set ‎average

    1. That is the official Liebherr shop, but they only sell metal diecast models. They don’t sell LEGO models.

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