Lego Clock Escapement W14

Lego Clock Escapement W14 (part of series W1 thru W14).
Pushing a (long) pendulum at its lower end. The weight (500g) drops 25 cm in 1 hour, i.e. still too much for a 24h clock. This is necessary, however, too keep the gear train going; the pendulum can do with much less. The clutch that connects the gear train to the scape wheel helps to avoid frame distortions, resulting from the weight, to affect the bearing of the scape wheel.
See Detail W14 for supspension of the pendulum.
Friction can be reduced by increasing the distance between the wheels, so that the pegs hit the grey horizontal bar above the bob closer to the point where the curvature starts.

Category:

Science & Technology

Tags:

• Lego
• clock
• escapement
• W14
• dead
• beat
• pendulum
• hemmung
• Graham
• Uhr
• horloge
• horology
• horlogerie
• horologia
• orologio
• reloj

[BenVanDeWaal]

The pendulum has a high Quality Q and a high mass. Compared to it's kinetic energy the friction by the pallets is negligible. However, it is this frictional loss that has to compensated for by the pushes of the escapement. This applies to all clocks.

[geofry40]

Is there any chance that we might be able to see the gear train and the clutch? i'm curious about what it looks like.

[BenVanDeWaal]

Please, send your e-mail address, so I can send some photographs.

Ben.

[knexrule100]

thats cool. i'm just wondering how the pendulum keeps moving with that little pressure on it?

[BenVanDeWaal]

The long arm. See my message.

[Suncahe]

Hello Ben,

I was wondering why the friction caused by the escape wheels pushing down on the pendulum doesn't stop it dead in its tracks? Especially when the pendulum swings at such small amplitude, meaning gravity has a small pull on it.

I'm new at making clocks and greatly impressed by your escapements, I love how they are so insightful and therefore easy to comprehend, though this one remains puzzling in many ways for me. I'd love to hear from you!

[lolcat23]

of your lego escapements i have seen, this one might be my favourite. But then again, i have a soft spot for long, low amplitude pendulums. Plus, if built with "real" stuff, it could be a little bit of a mysterium movement :P

[getthejpeg]

brilliant

[luovahulluus]

Just built my own lego clock and posted the video. There is still a lot of work to do on it, optimizing. Should have searched in here before i made it.

Anyway great job. I'm still waiting for you to make the grasshopper escapement.

[PATSICK]

Very nice; thanks for taking the time to put these up here.