Davidz90

Exactly this. Also ,the 64t gear will be a very useful addition for making large gear ratios, especially if it can be matched with 8t at some reasonable spacing. Even with 16t (which meshes with it at a regular spacing), a chain of 1:4 ratios (16:64) may have lower friction than multiple 1:5 (8:40).

Apparently the bike has a freewheel mechanism, e.g. one way ratchet inside 24t gear. So many new, useful parts!

This one is not mine, but built by Roger Barthares. He agreed for me to share it. Most likely a new world record of efficiency, at 17.3 microwatts. My record from 4 years ago was technically 14.6 microwatts, but it was very unreliable and had no hands at all.

I can count 16 teeth on one quarter of the wheel. Also, it seems slightly larger than 60 tooth turntable. 64 is definitely more desirable in terms of adding new gear ratios.

Well, I'll certainly have many uses for this in clocks. If I counted properly, it has 64 teeth, making easy 1:8 and 1:4 gear ratios possible. Please make 32t gear next XD

Wow, that's a big news! Any more info on this bike? I couldn't find anything about it. Edit: ok, found it. 11380 Road Bike

Yes, this! My dream come true would be Bugatti type 35 or some other 20's-30's race car in the 1:8 supercar scale.

Thank you!

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 :)

The second edition of my book is here, with almost double the length! Link: https://drive.google.com/file/d/1u2hjSavIkEeW3qnAZkPk7qt0ar5UKe-d/view?usp=sharing The biggest additions are two new chapters about balance wheel escapements (like in wristwatches) and computer simulations. Physics section got expanded as well. I'm working on a printed version. I'm not fully satisfied with the book size and image quality, hopefully I'll manage to make the second edition slightly larger and nicer without inflating the price too much.

I had an opportunity to showcase my clocks at a science festival :) Few lessons learned: -A full-sized grandfather clock sure attracts attention, but kids couldn't really see the mechanical bits at the top -On the other hand, the most ornate parts of the clock tower are near the bottom, where most adults couldn't see them -The new tower is not as rugged as the green clock, it was constantly losing small bits and pieces; transporting it intact was also challenging (it only divides into three large sections) I already have some ideas how to address above issues; new project will start during winter break