10 weird and wonderful derailleurs – and how they changed cyclingStuart Garner08/06/2018cycling-snippet 10 weird and wonderful derailleurs – and how they changed cycling https://www.theguardian.com/environment/bike-blog/2018/jun/07/10-weird-and-wonderful-derailleurs-and-how-they-changed-cycling?CMP=Share_AndroidApp_WordPress
