Another weird but interesting project from cyclist/maker The Q: A DIY bicycle wheelie trainer. Since the difficulty for newbs to sustain a wheelie is maintaining balance while pedaling, he hacked together a sort of primitive Peloton that would allow him to practice that, without needing to leave the building:
And if the video's to be believed, it appears it actually worked:
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I'd like to see someone come up with rigs for skateboarding tricks.