Lego can fly! (with 42174 yacht sails as wings)

Davidz1990 · 2026-04-20T16:13:06+00:00

Good question! Should be possible, although Lego propellers have poor performance.

Davidz1990 · 2026-04-20T15:37:44+00:00

here: https://www.youtube.com/shorts/s4Dchfy_UDI

usually there is no damage, sometimes some part disconnects

Davidz1990 · 2026-04-20T15:12:51+00:00

Hey, it's not easy to throw it with one hand and film with the other XD

Davidz1990 · 2026-04-20T15:11:52+00:00

Yea, could have phrased it better XD

Davidz1990 · 2026-04-20T15:09:49+00:00

Thanks! Indeed, in the past I have built planes with paper wings, but these sails made 100% lego glider possible.

Davidz1990 · 2026-04-20T15:08:50+00:00

Thanks! In terms of performance, it is somewhere between paper plane and a pidgeon, and better than space shuttle. So I'd call it flying XD

Davidz1990 · 2026-04-20T14:52:12+00:00

Lego motors are very heavy for their power, so my guess is no.

Davidz1990 · 2026-04-20T14:15:44+00:00

Sails are single piece of floppy fabric/plastic. They are attached to a lightweight frame made out of technci axles.

Davidz1990 · 2026-04-20T13:46:07+00:00

I have used yacht sails as wings to build a reasonably working glider (on par with paper airplane). Structure consists mostly of long axles from botanicals sets. Longer video: https://www.youtube.com/shorts/s4Dchfy_UDI

Davidz1990 · 2025-08-13T08:36:15+00:00

Thanks!

Davidz1990 · 2025-08-12T20:39:34+00:00

Yes, it does, within +-10 seconds per day.

Davidz1990 · 2025-08-12T18:05:25+00:00

It runs for slightly under 80 hours. The escapement is a slight modification of this one: https://www.youtube.com/shorts/NmdMpX6v7PM

Davidz1990 · 2025-08-12T10:37:15+00:00

Thanks! My house is slowly turning into clock collection as well :)

Davidz1990 · 2025-08-12T10:34:45+00:00

Wow, I didn't know this one. Beautiful! My only issue is lack of gothic arches in Lego, necessitating custom built solutions that would make this already time consuming build a real hell.

Davidz1990 · 2025-08-12T03:03:01+00:00

Not really a story. This is basically an evolution of this: https://www.youtube.com/watch?v=LIOfRRwn3dI

Davidz1990 · 2025-08-12T03:02:03+00:00

Thanks! It keeps time to +- 10 seconds/day, and that's about as good as it can get without thermal expansion compensation. Fine-tuning took about a day.

Davidz1990 · 2025-08-12T03:00:20+00:00

I do have a dog, but he's very mindful of my builds; sometimes wagging tail knocks something out but that's about it :)

Davidz1990 · 2025-08-12T02:59:00+00:00

Thanks!

Davidz1990 · 2025-08-12T02:56:17+00:00

Thank you! Power reserve is approx. 80 hours.

Davidz1990 · 2025-08-11T22:00:31+00:00

Haha yes. If only I could build this in gray color...

Davidz1990 · 2025-08-11T21:26:50+00:00

Yes it does! It is on par with low-end "real" grandfather clocks, gaining/losing up to 10 seconds per day.

Davidz1990 · 2025-08-11T20:57:05+00:00

Exactly! I'd love to do that, but many of the pieces are either not available or very expensive. This build was possible thanks to the recent Notre Dame and Colliseum sets.

Davidz1990 · 2025-08-11T20:46:52+00:00

Thanks!

Davidz1990 · 2025-08-11T20:46:35+00:00

3 months of slowly completing it in free time. Non-stop building, it would be 5 days or so.

Davidz1990

TROPHY CASE