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Nice video series!

With some incredibly odd timing, I documented building a onewheel right before the commercial ones existed, for a 2014 writeup:

https://transistor-man.com/flying_nimbus.html

So jealous that off the shelf hub-motor in wheel assemblies exist now, i had to build a custom hub and dealt with the oddities of planetary backlash, then ended up fitting an early direct drive motor.

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It really is amazing how much the state of the art in hub motors has come since 2012. Building silly electric vehicles is almost too easy now that you no longer need to wind your own motor and write your own bldc commutation firmware...

'incredibly odd timing'. I pray that I live long enough to develop such equanimity, assuming you got ripped off.

It's a pretty big planet. At any given time, probably thousands of engineers are simultaneously thinking of building the same "next new thing."

There's a named phenomenon for this... I can't put my finger on it. Something about discoveries/inventions all independently piling up at the same time whenever all conditions are right in history.

Maybe you're thinking of the concept of multiple discovery: https://en.wikipedia.org/wiki/Multiple_discovery

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