GBC Spiral Ball Lift

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14 Responses

  1. Rich G says:

    Great PDF and wonderful directions. A wonderful design and a real treat to build. I’m building this for my son’s birthday and I got it entirely off the PDF.

    The only correction to the PDF is at the very top. On page 31, it shows the two #5 angle pieces going directly onto the connectors, but this leaves too small a clearance for the ball to feed out. On the video, there is a bushing ontop of the connector, which gives enough space. You have to use a #4 axle instead of the #3s to fit into the top of the pump stack.

  2. BoBo Shanna Chan says:

    Oh anyway, i checked again, and pdf is available!! WOW, i am so HAPPY now, and let me check on BL, BUT if the PART NUMBER CAN ALSO BE PROVIDED would be easier for the new technic lego fan…. as im confused…. anyway i love YOUR CREATION A LOT!!!!!!!

  3. BoBo Shanna Chan says:

    Hi Nico 71,

    I love this kind of ball contraption alot, but never seen lego create this officially.

    I want to buy this instruction and make my own one for display on my desk!!!!!!

    I never play technic line but i love this one, so i need instruction, otherwise, i have no idea at all on building this!!!!! pls make it with instruction, should be some fan out there like me wanna get one~~~~~

    email me if anything advise me, thanks alot , and your creation is very sophiticated!!

  4. Marc says:

    Sorry, I missed that. Thanks for your quick reply, I’m ready to order the parts now and build the GBC 🙂

  5. Nico71 says:

    Hello, it is written in the review, respectively 10x 10L and 14L. Regarding the rubber band, yes a 1.6*1.6 is correct but smaller or larger is ok. I use some small rubber band from tail hair.

  6. Marc says:

    Hi Nico,

    I really like your GBC modules. Thanks for designing them and for making all videos, pictures and building instructions available!

    I’m planning to build the Spiral Ball Lift and I was able to find all part IDs on BrickLink. However, I’m not sure about 3 parts and I hope you can support.

    – Hose, Ribbed 7mm (page 34) : what’s the length of the hoses ? We need quantity 12 of one length and quantity 10 of the other length, but these are available in quite some sizes (1L until 32L). Could you please indicate which two lengths we need.

    – Rubber belt (page 20) : is this the belt of approximately 1,6 x 1,6 cm ?

    I hope you can help me with these questions, so I don’t buy the wrong parts 🙂

    Thanks in advance,

  7. Nico71 says:

    No, only the inventory with sheet.

  8. Martin Haber says:


    Do you have a list of parts with parts ID or code and quantity of each part?



  9. Nico71 says:

    On bricklink, search soccer ball or basket ball 🙂

  10. maks says:

    Hi! where can I buy these balls?

  1. 20/03/2016

    […] Original Blog Article (English): here […]

  2. 20/03/2016

    […] Article original (Anglais): ici […]

  3. 22/05/2016

    […] LEGO Great Ball Contraption (GBC) module uses Nicolas’ (Nico71) ball pump to push the balls up through the tower. The balls then roll down a rotating double helix that is […]

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    […] Lift This is a ski lift, it is based on MOC-3763. I added a ball pump based on nico71’s ball pump. The ball pump ensures one ball about every second is sent to the ski lift so that its pickup is […]

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