Davidz90

I have recycled the best elements of the clock tower into something more manageable in terms of size: The form resembles turret clocks commonly found inside the clock towers. The mechanism will rest at the top. Unlike the previous design, here I have plenty of space to add many extra functions such as chimes.

Thank you very much! The fact that You find the book useful is all the payment I need, really :) Knowledge should be free, and my goal is to share the knowledge.

Anyone else having invisible white text on white background on the Technic subforum? Same for me. Dark theme works, other subforums work.

Printed version is available! As promised, now in larger format. Some old chapters have been updated with better layout too, to make pictures bigger and clearer. However, larger format and more pages also means higher price, unfortunately - it doubled from $10 to $20. Initially, I also wanted to make a hardcover version with "premium quality" images, whatever exactly Amazon means by that, but that yielded $40 price tag, which feels unreasonable. Link to Amazon page is here: https://www.amazon.com/dp/B0G6YQPJ6W

Traditionally, Merry Christmas :)

Congratulations on a fantastic achievement! I'm really happy I could help, and that there are so many enthusiasts of this somewhat niche hobby The accuracy is truly astonishing - under a minute per week is up there with the best of the best. You have already beaten: -best mechanical wristwatches -average "real" grandfather clocks -cheapest quartz watches Fantastic! Next step would be thermal expansion compensation, but that would most likely need non-Lego parts. (however, you might check Kei Abe on youtube, he has built 100% Lego thermal compensation)

Very interesting! Great job recreating it. For the real thing, I have some doubts regarding the durability of the ratcheting mechanism in automotive applciations. Nevertheless, this is a really clever solution.

A few more photos. The tower is in the same scale as Notre Dame cathedral (approximately 1:300), making it 570 m high. That would be second tallest building in the world and most massive one by far. The lowest level has interior, visible through the main entrance The clock mechanism is on a "balcony" below the face. Two driving weights provide pwoer for about 80 hours on one rewind. General layout is basically two towers connected with bridges, creating a sturdy H-beam like structure. Near the top, there are two knobs for rewinding and setting the time. One can also see one of the two large diameter wheels that support the driving weight. Nylon string unwinds from the central, white spool and goes around these wheels. This way, each driving weight is supported by a single, large diameter wheel, reducing friction.

It's done. That was a lot of work.

Wow, fantastic!

It's alive! Finally got to the clock part of this build. Pendulum (well, ugly placeholder) hangs in front, escapement is powered by two weights hanging in the recesses of the H-shaped structure of the tower.

Wow this thing is massive!

Progress...

Unfortunately not. However, the general idea is the same as here: Magnet is used to close/open circuit. What gear ratio are you using? With 2 meters to the ground, runtime of 24 hours should be straightforward to do with something around 1:50.

Wow, this is absolutely fantastic! Beautiful use of Lego as a decorative element. Great job, and I'll wait for a full video :)