Akiyuki Ball Factory New Style (V3)

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The Ball Factory designed by Akiyuki is without doubt the most iconic LEGO Great Ball Contraption and has drawn many into building GBCs including me 3 years ago. With 15 synchronized components the Ball Factory is also the most complex LEGO GBC ever designed.

Originally placed on two big baseplates, it was hard to relocate and reliability was a concern with balls dropping into the complex mechanisms causing jams and need for time consuming resynchronizing.

After 3 years of designing and building my own GBCs I thought it was time to attempt building the Ball Factory as a fully compliant and reliable GBC to take to events. To achieve this I've put all components on a frame and used studless beams for more rigidity. Together with other improvements this resulted in this new style and GBC compliant Ball Factory with much improved reliability. About 50% of the parts of the original Ball Factory are the same.

Free building instruction in 4 parts available under the Building Instructions tab.
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MOC-24605

Name Akiyuki Ball Factory New Style (V3)
Designer Berthil
Designed 2019
Inventory 4341 parts
Theme Technic

47 COMMENTS

  • 2 months, 2 weeks ago bkow Level 8
    When I look at your machines like this I realize that I definitely need more individual parts. Great work.
  • 5 months ago tismabrick Level 7
    Thanks a lot for updating the instructions once more!
  • 5 months, 1 week ago jbuccino Level 7
    A great upgrade. I finally decided to convert my original to your new version. One question - at step 274 of Part 3 - the 1x2 black liftarms appear one stud off - shouldn't they be moved back to connect to both the 8-axle (in the next step) as well as the 3-axle? Thanks.
  • 6 months ago Daniel58 Level 11
    Excellent job Berthil!
    I already built the first version, but it was necessary to adjust it continuously and it was very large.

    I will try with this version

    Thank you very much
  • 6 months, 3 weeks ago Jackautocomeback Level 6
    At step 334, they look at 1 plate 1 x 5 and 1 x 6 tile.  These parts doesn't exist.  May you correct this, and what is the good parts?

    Jack
    • 6 months, 3 weeks ago Berthil Level 11 Designed this MOC
      The 1 x 5 is the end of the 1 x 10 plate that is attached to the underside of the 4 x 10 plate and it is sticking out 6 studs so six stud tile fits on that. Because it's deeper it looks like 5 because 6th stud cannot be seen from that angle.
      • 6 months, 3 weeks ago Jackautocomeback Level 6
        At step one, they looks like a 1 x 5 plate, and 1 x 5 tile.  I see the step 2, and it's a 1 x 5 tile that doesn't exists.
        • 6 months, 3 weeks ago Berthil Level 11 Designed this MOC
          I know what it looks like but it is like I wrote. I'll see if I turn step 1 and 2 in the callout around 180 degrees so it is clearer but should also be clear how it is supposed to be put in place on the module.
          • 6 months, 3 weeks ago Jackautocomeback Level 6
            I see the diagram, but, the plate doesn't be attached to the rest of the plates.  I don't understand what you mean with your reply.
            • 6 months, 3 weeks ago Berthil Level 11 Designed this MOC
              I've just uploaded a new part 4 (without new version number) where it is turned 90 degrees, should be clearer now.
  • 6 months, 3 weeks ago Jackautocomeback Level 6
    Please correct the following:  Add one more 85861 round plate in dark bluish gray for step 145 of the second booklet.  Substract one dark bluish 15573 jumper also.
    Your product is amazing!  I will finish the project this week end.
    Jack
    • 6 months, 3 weeks ago Berthil Level 11 Designed this MOC
      I corrected that one a while ago, should be correct now so guiding beam can be fixated properly.
  • 6 months, 3 weeks ago Jackautocomeback Level 6
    They have 17 11L dark bluish technic beam (32525).  And at page 7 of the fourth book, the black pin is already there.
  • 7 months ago Jackautocomeback Level 6
    At page 50 of the second book, where goes the 18654 bushing and the third 4265c bushing?
    Jack
    • 6 months, 3 weeks ago Berthil Level 11 Designed this MOC
      Third bushing is what fixates the 3L axle of the rod in the callout and other two are on the rod itself. 18654 has been moved to other step so it is clearer now. Liftarms adjusted to 17 and extra pin is gone, thanks. I'll be uploading new version but rendering takes a while. In step 338 the two 1 x 2 LBG slopes need to flipped.
      • 6 months, 3 weeks ago Jackautocomeback Level 6
        Can you email me the picture for the 18654 bushing?

        Kind regards,
        Jack
        • 6 months, 3 weeks ago Berthil Level 11 Designed this MOC
          New part v2.1 is already up with change. At your service.
      • 6 months, 3 weeks ago Jackautocomeback Level 6
        Didn't see the 18654 bushing at step 181.
  • 7 months ago Jackautocomeback Level 6
    Another thing, at page 46 of the second booklet, is there a bushing to lock the 6L axle at the bottom of the 3L dark bluish liftarm?
    • 7 months ago Berthil Level 11 Designed this MOC
      Yes, lower 6L axle should have a bushing or 2 half bushings there, thanks for noticing.
      New BI part 2 version has been uploaded.
  • 7 months ago Jackautocomeback Level 6
    In the second book, page 43, where goes the other 4265c light bluish bushing?  I see only one in red.
    Jack
    • 7 months ago Berthil Level 11 Designed this MOC
      Same location but opposite side to lock the 3L connector like the visible one. I'll try to correct the BI.
  • 7 months ago Jackautocomeback Level 6
    Hi!  Very interesting thing :)  So, in the second book, at page 15, where goes the 5th black pin?  We see 4 in the instruction page.

    Thanks!
    Jack
    • 7 months ago Berthil Level 11 Designed this MOC
      Hi Jack, please download the latest version because I already corrected this into a callout so it is clear 3 pins go into the 9L beam.
      • 7 months ago Jackautocomeback Level 6
        At the second booklet, page 28, is it a 3x3 red rubber band or 4x4?  the 4x4 seems loose.

        Kind regards,
        Jack
        • 7 months ago Berthil Level 11 Designed this MOC
          It's the 26mm as indicated in the parts list, not sure if that is the 4 x 4 you mean. The rubber band only needs to dampen the last bit of the Bob movement when putting the bucket back so it is correct that it is loose in all other positions.
  • 8 months, 3 weeks ago menceedge333 Level 10
    I t is so cool how you put a lot of gear to control everything.
  • 9 months, 3 weeks ago legoist53 Level 6
    Hallo Berthil,

    ich möchte Ihre hervorragende Ballfabrik und Regenbogenwelle
    nachbauen;
    Können Sie mir bitte jeweils die ca. Außenmaße (Breite bzw. Länge / Tiefe in cm) miteilen,
    da ich beide gleich auf ein Brett aufbauen möchte.

    Vielen vielen Dank für Ihre excellenten kostenlosen Bauanleitungen
    • 9 months, 3 weeks ago Berthil Level 11 Designed this MOC
      Beide Modulen lässen sich sehr gut mit zwei Händen hoch heben, ein Brett ist da nicht benötigt. Immerhin:
      Ballfabrik LxT = 37 x 42 cm
      Regenbogenwelle L x T =  92 x 11 cm
      • 9 months ago legoist53 Level 6
        Hallo Berthil,
        ich habe ein kleines Problem mit der Bauanleitung Part 2 Schritt 151: (vorne im Bild)- unterhalb der dünnen 2*2 Platte, 1*10 Platte und 2*2 Eckplatte -  neben der 1*2 Platte -  eine 1*8 Platte auf den 2*2 Stein über 1*8 Stein und dem 1*13 Balken zu setzen.Was mache ich falsch ?
        • 9 months ago Berthil Level 11 Designed this MOC
          Ich kann leder erst nach meinem Urlaub nachsehen
          • 8 months, 3 weeks ago legoist53 Level 6
            Hallo Berthil,
            in Ihrer neuen Version Teil 2 Schritt 151 ist mein Problem behoben.

            • Bei Teil 2 Schritt 167 der 5. gelbe 1/2 ?
            • Bei Teil 2 Schritt 216 wird glaube ich nur eine 1 * 6 dünne Platte benötigt ?
            • Bei Teil 3 Schritt 288 berührt der Leerer bei der Aufwärtsbewegung die hintere obere schwarze Verstrebung und die Rampe, bei der Abwärtsbewegung bewegt sich der Leerer nur geringfügig nach hinten ?. 
            • Bei Schritt 274 werden glaube ich 2 * 1 * 2 dünne Balken benötigt, wie bei Schritt 283 und auch so angebracht.
  • 9 months, 3 weeks ago KristofPucejdl Level 12 MOC Designer
    Insane. Thank you so much for sharing this. I appreciate the veffort very much!
  • 10 months, 1 week ago Jahwe Level 4
    Very impressive, big thanks to providing this free of charge and updating tirelessly based on feedback! If I ever meet you on a fair, I owe you a drink!
  • 10 months, 1 week ago Polyprojects Level 10 MOC Designer
    Thank you so much for this magnificent piece of technic. Love it. 
    Instructions look absolutely great.Many thanks Berthil.
  • 10 months, 3 weeks ago RitPet Level 10
    Thank you for all your work the instructions look very good, I think this is a good improvement.
  • 11 months ago psmyth Level 16
    This is terrific...I will build this for sure!! I have all the parts for the original but never built it. Thanks for all the hard work doing this!!
  • 11 months, 1 week ago tismabrick Level 7
    Thank you so much for this. Really impressive! Will take my old one apart since it was really unreliable. Can‘t wait for the instructions :)
  • 11 months, 1 week ago SenJos Level 10
    • 11 months, 1 week ago Berthil Level 11 Designed this MOC
      That's not the real link, please read description, digital model is finished and I'll be making a free instruction in two weeks. I got the request to share the parts list.
      • 11 months, 1 week ago SenJos Level 10
        ohhh...I'm sorry!! ;)
        Thank you!!
      • 11 months ago Polyprojects Level 10 MOC Designer
        Hoi Berthil,  very nice job. Amazing that this is working so smooth even at higher speed. I'm convinced. I have to build this.
        I have  tried the link and subscribed but it did not really worked.
        I've downloaded the first part available here at bricklink. I guess you are working on the missing part...
        Thank you so much
  • 11 months, 1 week ago Antoineddp Level 15 MOC Designer PRO
    Great ! Are you the real designer ?
    • 11 months, 1 week ago Berthil Level 11 Designed this MOC
      As mentioned Akiyuki is the designer of the original version, I designed this version keeping the original elements.
  • 11 months, 1 week ago Leo1 Level 16 MOC Designer
    Impressive!
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