>>1981988>>1982182>When you pedal in reverse you are also going forward but in a lighter gearhuh, cool. A brazillian youtube channel just did a bike like that, but with 2 chainrings and no derailleur:
https://youtu.be/ueINM3efuNQ?si=8-kQwEPLzipZvhspI believe it fits the thread's theme, and they're pretty much as grassroots as it gets.