Looking for some LEGO invention inspiration? Check out this LEGO soap bubble machine or Seifenblasen Maschine, a 2006 project by Johannes Gysel.
A rotating wheel of six bubble wands are dipped into a small vat of soapy liquid. As they pass in front of a small, motor-powered turbine, bubbles fly into the air. This machine is set to the music of French musician and composer Yann Tiersen.
Here’s another LEGO bubble machine, a Technic prototpye with a Lego Power Functions motor. It was created by Kevin Vanderwall for his kids. He explains:
It is all about gear ratios. Basically, for high speed, you want to use a large gear on the motor shaft (the “input”) which drives a small gear on the fan shaft (the “output”). Do the opposite to achieve a slower output speed, such as the one that actuates the bubble wand in this case.
This third version by Matze Glatze on YouTube directs air to the thread-covered bubble wands. There were multiple versions of this machine before this successful one was completed.
There are more LEGO videos and soap bubble videos in TKSST’s collections. Watch these soap-driven videos next:
• Bubble Bot: A robot built for blowing massive bubbles
• Bubble Device #2
• How bubble engineer Melody Yang makes mind-blowing bubbles
• How to make geometric bubbles
• How to make an inverted bubble