LZ’s Tech FAQ: Technical FAQ: Adapting bigger cassettes, re-gluing tubulars, patching tubes – Dear Lennard, I have a 2016 Roubaix with Di2 derailleurs, 50/34T front and 11-28T rear. I’d like to go to a 34- or 36-tooth cassette to ease climbing on my aging knees. Which options will allow this?: Use existing rear derailleur and fiddle with B-screw Replace short cage with medium cage on rear derailleur Replace rear derailleur with RD-R8050-GS — Rob Dear Rob, The first … http://ow.ly/EwTj50ipSWn
