My mechanical clocks

[Davidz90]

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.

[Davidz90]

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