Rob’s retro-direct bike. (pedal backwards=go forwards!) Posted on June 23, 2011May 7, 2018 by rossdaly SSD member Rob just put up a writeup of his red bike. It is what is called a retro-direct. It is a derailleurless bike with two speeds. One speed is achieved by pedaling forward, the other by pedaling backwards! For more info check out the wiki page Posted in bicycles, News.