It's an interesting experiment, to say the least.

Wow. That was pretty cool. Too bad it didn't work as well as hoped, but who knows what further development might discover. Neat idea for sure. Thanks for posting.

You're welcome. Have you checked out his channel? He's done a lot of interesting experiments, including making an ebike using a drone motor. (Spoiler: it works, but...)

Thanks for posting this. Quite an amazing project! And the tech he uses and even the ad at the end are interesting.

Otto

First I heard of him. It sounds pretty interesting. I do have some engineering background thanks to my MOS in the military, so I understood the concept but the details were a little too "in the weeds" for me to follow. Pretty neat none-the-less.

I do like the Smarter Every Day channel and Mark Rober but I haven't really had a lot of time to watch that kind of stuff the last year with my school schedule. Fortunately, that is coming to an end in just a few weeks and I'll be able to come up for air.

It's clearly a very lossy coupler, so what's the point of it?

For cycling? No point. Magnetic gearboxes are cool and do have real advantages in certain applications but in variable transmissions and in highly varied output force environments like cycling the efficiency loss rises to untenable levels.

I mean, there's no wear components so in that regard it's a cool idea. However with the low forces of cycling, a traditional gearing system that's properly lubricated and maintained (like rohloff) can last almost indefinitely and has far higher efficiency.