Category: Fan Builds

One of the fastest builders we know has done it again.
The only hold up was the GBC Funnels which Pete wanted to include in the GBC.
Watch his GBC 51 Gravel Works in action featuring the 2 GBC Funnels in full action.

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Recently we got this email from a dad who bought our GBC 52 Flight Fair for his child.

 

My child would like to thank you for GBC instructions. I am sending a picture of a letter my son wrote to you. It says:
—-
To: PV Productions
I like your GBCs!
I am also happy that Flight Fair is finally finished! Thank you!
—-

Thank you for all those products and services!

Thank you for those kind words and awesome video! He even connected our GBC 49 Geneva Drive to it in sync. How cool. You can build this as well. Get the building instructions, GBC Balls and other optional accessories via the buttons below:

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Nigel Doyle created this very nice looking LEGO Ball Clock on his Youtube channel. It keeps time by rolling balls on tracks which display the minutes and hours. One problem, when using the LEGO battery box the power will drop over time which makes the time fall behind.

Our USB Power Box to the rescue! By using our USB Power Box, Nigel was able to keep a constant voltage which results in a very consistent time display. Great use case and very nice model. Keep up the great work Nigel!

Here is what he wrote himself in the description.

Here’s my latest creation, a rolling ball clock. All my own work and design but inspired by the Chronomeans Dunyazad rolling ball clock.

The clock is powered by a Powered Up motor controlled by a simple one block motor node on the Powered Up App running on an Android phone. To maintain a constant voltage I’m using a USB power supply from PV Productions in the Technic Hub. This is then plugged into a mains powered USB charging hub.

I’ve had to use steel ball bearings as Lego GBC balls aren’t heavy enough to trigger the release mechanisms. The green wire is 3.3mm line trimmer cord. The other non Lego elements are some nuts used as counter weights.

The clock is reasonably accurate losing or gaining about 10 – 15 seconds per hour. To adjust it’s just matter of changing the speed on the code block slightly.

12 o’clock is displayed by no balls. The motor spins at about 125 rpm, it then goes through 3 x 1:5 gear reductions to drive to the 2 big red axles. These rotate once per minute and therefore could be considered a second hand. There’s always 2 balls in motion so it takes 2 minutes for ball to move from the ball feeder to the top.

The reset mechanism resets the 3 release mechanisms every minute whether they need resetting or not.

The whole project has taken about 3 months from start to finish. I started with a few sketches then prototypes of the various mechanisms to test whether I could make it all work. There has been a massive amount of fine tuning and refinement to get to this point of a working model.

The clock is fairly reliable and can run for hours with no issues but like many GBC’s you can get the occasional ball doing what it’s not supposed to.

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Christel from Switzerland build our GBC 47 Mill Madness – a 42114 alternate build and she has is running beautifully. Great Christel and thanks for sharing with us!

If you look carefully you can see a portable USB power bank powering our USB Power Box which powers the LEGO Powered Up Technic Hub that this LEGO sets uses. Awesome!

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Ingo De Clerck from Belgium combined our GBC 36 Crazy Carnival and GBC 41 Power Pit Mania together into one epic build. Amazing to see in action! And look at the size of it!

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Create your own GBC by combining some of our modules and connect them together in your own custom loop. This is very possible and Szilard Gyalay from the USA proves it. He combined some modules from our GBC 36 Crazy Carnival. Can you spot which ones?

This is what he wrote himself:

This build is inspired by GBC 36. The original PV-Production build features two of my most favorite elements. I used a very compact format for these two with a tight return circuit.

Yet again a build inspired by a PV production design and added my “spin to it ” and just my own lego pieces and fun, no need to own the set. Use your imagination to make it work. That is what Lego all about is in’t it ?

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